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Why Waste Servers' Heat?

mikejuk writes "A new paper from Microsoft Research (PDF) suggests a radical but slightly mad scheme for dealing with some of the more basic problems of the data center. Rather than build server farms that produce a lot of waste heat, why not have distributed Data Furnaces, that heat home and offices at the same time as providing cloud computing? This is a serious suggestion and they provide facts and figures to make it all seem viable. So when it gets cold all you have to do is turn up the number crunching ..."

204 comments

  1. Not new. by forgotten_my_nick · · Score: 4, Interesting

    This isn't a new idea. Some buildings like this already and IIRC IBM also marked this as one of their next 5 in 5.

    1. Re:Not new. by Daniel_Staal · · Score: 1

      And the problem with it in most cases is that servers shrink over time. Every new generation is both smaller and more power-effiecent, or they just plain get moved.

      Which means that in 15~20 years you are barely supplying enough heat to overcome heat losses in the system. And the homes and offices have no heating.

      --
      'Sensible' is a curse word.
    2. Re:Not new. by Anonymous Coward · · Score: 1

      Indeed. My college uses this in their "Green" building. They use the server heat to warm the side of the building that isn't in the sun for balance, and both sides have metal structures outside the windows to act as shade from the sun to try to keep it cooler as we do get a lot of sun around here.

      That is only what I know, I wouldn't be surprised if they also used the heat generated to heat up water in the building as well or some other use.

    3. Re:Not new. by AngryDeuce · · Score: 1

      And the homes and offices have no heating.

      In my office, that would be an improvement.

      In my personal experience, one of the biggest downsides to working in an office of predominately women (like I am now) is that the vast majority are freezing once the temperature drops below 75F. There are people running space heaters under their desks currently because we recently got a male office manager who, in his first managerial decision, turned the air down so that all the men weren't sweating down their backs and through their shirts all day long.

      Of course, in the winter, the office temp. has always been pegged at about 87F. Plants wilt, you can see heat haze when looking from one end of the office to the other...

    4. Re:Not new. by perlchild · · Score: 1

      They get more efficient... for the same amount of computing power. However, we ain't stopped needing more/faster computing power recently, quite the opposite.
      I would have expected Microsoft to make a proposal about power plants with computing power, not mere "smarter" buildings though.

    5. Re:Not new. by Midnight+Thunder · · Score: 2

      It is not new, but maybe getting a company like Microsoft talking about it will mean people will actually take notice?

      This is also probably why in colder climates the server farms should be downtown, where the excess heat can be taken advantage with the least loss, due to distance.

      --
      Jumpstart the tartan drive.
    6. Re:Not new. by Midnight+Thunder · · Score: 3, Funny

      Some of them are cold inspite of the actual temperature ;)

      --
      Jumpstart the tartan drive.
    7. Re:Not new. by Anonymous Coward · · Score: 1

      This is exactly what happened at my last job. The building was put up with no heating system at all - they counted on the data centers producing enough heat to heat the 4-story building. We all started chuckling when the directors in their corner offices had to bring in space heaters because they ended up freezing with all their windows and not enough heat coming from the data center.

      This was 15 years ago so although Microsoft may think it's radical that tells you how far behind the technology they really are. And my old job was perhaps 100 miles from Redmond as the crow flies.

    8. Re:Not new. by roman_mir · · Score: 0

      office of predominately women (like I am now)

      - whaaa? Are you saying you are a predominantly woman?

      the vast majority are freezing once the temperature drops below 75F

      - it's clear what to do now - women should be used as cooling exchangers.

    9. Re:Not new. by Anonymous Coward · · Score: 0

      Mainly older women I would say. In my office we have a group of women in their 50s/60s who bitch constantly if anyone dares turn the a/c on but all the other women are fine. Segregation of the workforce would help (ie. Stick the whining bastards in an office on their own and they can melt themselves for all I care)

    10. Re:Not new. by ozmanjusri · · Score: 1, Funny

      servers shrink over time. Every new generation is both smaller and more power-effiecent,

      This is Microsoft research remember.

      Their bloated OSs have kept chip designers busy building faster, more complex CPUs for decades.

      --
      "I've got more toys than Teruhisa Kitahara."
    11. Re:Not new. by Truekaiser · · Score: 1

      What also works, and studies back it up is just putting in a dummy thermostat. people who complain it's too(hot/cold) suddenly stop afterwards.

    12. Re:Not new. by Anonymous Coward · · Score: 0

      Trans girl here; estrogen affects metabolism.
      I never used to feel the cold but now I do. It's an objective thing, not just women being wimps.

      To reach a compromise, I still say wear more layers rather than wasting all that energy.

    13. Re:Not new. by fatphil · · Score: 2

      But 20 years ago, we just alt-tabbed between windows, and they just drew themselves as quickly as possible. Nowadays, we (not me, it's a complete abomination, IMHO) want high resolution alphablended 3D wibbly-wobbly animations in order to switch between programs. Pulling a figure out of my arse, that must be about 100x as much work. (The folk interpretation of Moore's Law supports a 57x increase in that period.)

      Likewise, some browsers are now doing web searches in the background with every character you type in the search box - that's way more than 100x work than just rendering 1 more character and waiting for you to click 'search'.

      --
      Also FatPhil on SoylentNews, id 863
    14. Re:Not new. by AngryDeuce · · Score: 1

      I'm all for layering, but I have a feeling that I would get sent home if I removed enough layers to be comfortable in our office in the summer time.

      Funny though, suggest that they put on a sweater in the winter to keep warm, as opposed to turning the heat up so high paper starts to char, and you'd think you'd asked them for sexual favors or something. You know it's bad when fighting over the thermostat settings spills over into email and ends up going like 4 steps up the ladder before a random VP tells everyone to stop wasting their fucking time...

    15. Re:Not new. by watanabe · · Score: 1

      Nope.

      Energy use per cm^3 has risen dramatically over the last 20 years. By your stated measures it should be dropping. Datacenters no longer have space budgets, they have power budgets, waste heat is one THE big problems with computers and datacenters right now.

    16. Re:Not new. by The+Archon+V2.0 · · Score: 1

      To reach a compromise, I still say wear more layers rather than wasting all that energy.

      Precisely. I'm a guy who tolerates heat well but cold poorly. I've got my jacket on right now because of the air conditioning where I work. I don't bother other people because of it, I just put the damn jacket on. In winter I add a sweater and cardigan under the jacket, still nice and toasty.

      Oh, that's excellent timing. My cubicle neighbor just started complaining about the temperature. I think I'll add earmuffs.

    17. Re:Not new. by Anonymous Coward · · Score: 0

      This is not new, this is a common design in modern buildings in Norway, especially if you have decently sized server room.
      And even in that regard it is an old design where you have something generating too much heat one place in the building.

      Of course, living in a climate that requires office heating pretty much every day has brought focus on the issue a long time ago... What might be new is distributing that heat outside the building to the local community.

    18. Re:Not new. by Bengie · · Score: 1

      Transistor density is doubling every 18 months, power consumed per transistor is is decreasing about 10% every 18 months. See a problem?

      While computer are getting more efficient at doing the same amount of work, their ability to do more work out paces their ability to use less peak power.

      nVidia said their next gen GPUs that will be out in ~2013, will be 16 times more gflops and 8 times less power per gflop. All I see is 2xs as much power. Except GPUs capable of ~500watts.

      Intel's trigate tech will temporarily reduce power consumed, but the over all pace is more peak power.

    19. Re:Not new. by Anonymous Coward · · Score: 0

      My server provider has been claiming to be doing just that for many years now. It's part of their "green" bull-crap and you can use some kind of national emblem on your site but I don't because it's beyond stupid. I don't want no hipsters joining because less energy is being used, I want them to join because it's a great site.

    20. Re:Not new. by Anonymous Coward · · Score: 0

      Yes she is a predominantly woman. Now. Will change later

    21. Re:Not new. by russotto · · Score: 1

      What also works, and studies back it up is just putting in a dummy thermostat. people who complain it's too(hot/cold) suddenly stop afterwards.

      Not because they've gotten what they want, but because they've received confirmation that complaining doesn't help.

    22. Re:Not new. by Anonymous Coward · · Score: 0

      you are confusing what MS research and what the OS team do.

      Research do just that, research. they float a lot of ideas, some become reality, some don't.

    23. Re:Not new. by N3Bruce · · Score: 1

      On a seasonal basis, this automatically happens in most homes and small businesses anyway. Heat generated by the servers helps contribute to keeping things toasty in the winter. It is not a reason in itself to not increase their efficiency though. Fuel, such as natural gas or oil burned in an onsite furnace results in 85-95 percent usable heat. The typical electricity generation cycle using a coal, oil, or natural gas boiler is about 33 percent efficient , Since this heat would be generated anyway, you might as well use it if you can, but furnaces or heat pumps are more efficient ways of providing heat.

      In the summer the situation is reversed. All of that waste heat needs to be removed, meaning you pay for electricity to run the server, and the air conditioning to remove the excess heat. Same goes for lighting and all appliances that generate heat. The strategy is to find a way to circulate that heat in the winter, and maximize efficiency of all of the electrical devices year round. That's about as simple as I can make it.

    24. Re:Not new. by rcpitt · · Score: 1
      --
      Been there, done that, paid for the T-shirt
      and didn't get it
    25. Re:Not new. by dr2chase · · Score: 1

      If the men stripped down to thongs, perhaps that would make a case for lower temperatures in the office.

    26. Re:Not new. by Truekaiser · · Score: 1

      Nope if you read the studies it relies entirely on the placebo effect. Them changing the temp on the non-hooked up thermostat is enough to make them 'feel' the temp they wanted most of the time.

    27. Re:Not new. by afidel · · Score: 1

      That's not true at all for datacenters. Heat density in the datacenter is increasing, so fast in fact that datacenters built just 5 years ago are largely insufficient to power and cool bladecenters. In my datacenter we ran out of power and cooling capacity long before we ran out of physical space to fit everything, for us the saving grace has been virtualization but in the commercial datacenter sector there is a lot of floorspace going unused because of increasing power density. Some facilities are expanding power and cooling if they can in order to not waste that space but it can be tricky because it is often cheaper to do a greenfield design for a new more dense facility than it is to retrofit an existing one.

      --
      There are 4 boxes to use in the defense of liberty: soap, ballot, jury, ammo. Use in that order. Starting now.
    28. Re:Not new. by Anonymous Coward · · Score: 0

      The women just don't want you staring at their nipples all day

    29. Re:Not new. by dbIII · · Score: 1

      Fashion does that to an extent - some women want to show off a lot of skin even in winter (nothing wrong with that) or unknowingly follow a trend inspired by that while a lot of the men are happy to just wear more stuff when it's cold. Then of course there's differences in circulation and body hair and the people that sit still in a corner all day are more likely to feel the cold.
      Most of the women where I work wear jeans and everyone seems to react the same to whatever the office temperature is. Upstairs where there are older women in dresses they had frequent squabbles over the temperature until smaller individually controlled units were put in.

    30. Re:Not new. by dbIII · · Score: 1

      It's not just that, some of us guys have almost enough body hair to be G rated while naked.

    31. Re:Not new. by Khyber · · Score: 1

      "Which means that in 15~20 years you are barely supplying enough heat to overcome heat losses in the system."

      Thermodynamics is going to set a hard limit on that. There's only so much you can put on one electron, eventually you will have wasted electrons and thus heat waste.

      And, as we get smaller and smaller, we fit more and more in the same space, effectively nullifying the advantage.

      In short, actually reusing the wasted heat will help. Sure, you're not likely to get MUCH back out of it, but any little bit helps.

      --
      Still waiting on Serviscope_minor to wake up to fucking reality and realize that Jessica Price isn't going to fuck him.
    32. Re:Not new. by Khyber · · Score: 1

      Plants wilting at 87F is an indicator of being rootbound or poor balance of O2 at the root zone (again caused by root binding limiting the available surface area for oxygen absorption by the roots.)

      Just FYI - put them in bigger pots with more soil.

      --
      Still waiting on Serviscope_minor to wake up to fucking reality and realize that Jessica Price isn't going to fuck him.
    33. Re:Not new. by Khyber · · Score: 1

      From my experience, it's not a VP but a JANITOR or Maintenance head that tells everyone to STFU about climate controls.

      Except in my position, then it's my job to bitch about it because if they're not properly maintained a whole multi-million dollar crop responsible for keeping a few thousand people fed can quickly die.

      --
      Still waiting on Serviscope_minor to wake up to fucking reality and realize that Jessica Price isn't going to fuck him.
    34. Re:Not new. by toddestan · · Score: 1

      G rated or not, no one wants to see that.

    35. Re:Not new. by black+soap · · Score: 1

      In my experience, I'd rather it be cold. You can always add more layers if it is too cold for you, but when it is too hot there are practical and legal limits on how much you can take off.

    36. Re:Not new. by Anonymous Coward · · Score: 0

      Your a filthy sow.

  2. What a novel idea by suso · · Score: 4, Interesting

    Nobody's ever thought of that before. I thought this "paper" was going to have some kind of design for a way to do it or something. Actually, recently I've been thinking about the way some barns are constructed. Where they have have windows at the apex of the roof. I guess that channels the heat up and lets it out right? Is it possible to put turbines up there that are driven by heat?

    1. Re:What a novel idea by Anonymous Coward · · Score: 0

      Yes because your two sentence is clearly just as substantial and practical to implement, not to mention as beneficiali to mankind as a complicated research paper with all facts and figures by a respected institution. Drongo, did you even read the PDF? Put a fork in suso and turn him over, he's done.

    2. Re:What a novel idea by Anonymous Coward · · Score: 0

      Put a fork in suso and turn him over

      Careful, to him that's foreplay.

    3. Re:What a novel idea by suso · · Score: 4, Informative

      Oh really, then why when I search for datacenter in a barn, this comes up first: Microsoft puts data centre in a barn (Jan 2011)

      Yeah, I'm done alright.

    4. Re:What a novel idea by F34nor · · Score: 1
    5. Re:What a novel idea by errhuman · · Score: 1

      I had to check that one wasn't an April Fools first.

    6. Re:What a novel idea by Anonymous Coward · · Score: 0

      Careful, to him that's forkplay.

      ftfy

  3. Temperature? by Kraftwerk · · Score: 1

    640K(elvin) ought to be enough for anybody.

  4. This is novel? by AngryDeuce · · Score: 2

    My PC has been doing double duty as a space heater for years.

    1. Re:This is novel? by Anonymous Coward · · Score: 0

      It's the only thing keeping me on Windows.

    2. Re:This is novel? by hedwards · · Score: 1

      During the winter I don't bother heating most of the house on average days because my computer does a good job. It gets toasty during the summer, but not until the afternoon and it just gives me an excuse to go outside and risk the evil day star's menacing photons.

      But, I think the real problem with doing this on a scale substantial enough to make a difference is really that you have them on all the time and you don't want to have to go running around to a million different server rooms monitoring that they're still running properly. Making sure that nobody has gained unauthorized access and getting to the proper room when one does break.

      Most large buildings don't use central heating for a reason, they've pretty much all got heat exchangers, hydronic pumps and all that jazz because it's a lot easier to manage the heating and cooling that way than it is to deal with this sort of BS heating system.

    3. Re:This is novel? by Anonymous Coward · · Score: 0

      You are in violation of Microsoft licensing, the authorities have been automatically notified.

    4. Re:This is novel? by akpoff · · Score: 1

      No doubt. Geeks have known this for years. During it's heyday one slashdotter referred to the Pentium 4 as a space heater that emits computational products as a side effect.

    5. Re:This is novel? by dodongo · · Score: 1

      Right there with ya. I used to have a P4 furnace but have upgraded to something a little newer and cooler. The GPU and TV Tuner cards have picked up the slack, however.

    6. Re:This is novel? by Compaqt · · Score: 1

      >Most large buildings don't use central heating for a reason, they've pretty much all got heat exchangers, hydronic pumps

      Isn't hydronic central? It's certainly not a space heater.

      --
      I'm not a lawyer, but I play one on the Internet. Blog
    7. Re:This is novel? by Anonymous Coward · · Score: 0

      My old computer + dual crts used to keep my room nice and toasty. I have since upgraded to a 24.5" lcd and a amd athlon II quad core and now it barely even registers heatwise. I had to get a heater going for the colder days and nights... :\

  5. Issues by JamesP · · Score: 1

    The main issues are efficiency and temperature.

    Sure, when you have something "for free" efficiency is moot. But you would still have to have pumps to transport the heat.

    Hence the 2nd point: temperature. I'm thinking you can have the water around 50C/120F tops by that method. So if you get the water at that temp, pump it out to the offices, how much of your heating needs can be fulfilled there? How much heat will be lost in transport?

    --
    how long until /. fixes commenting on Chrome?
    1. Re:Issues by Anonymous Coward · · Score: 0

      50C running water for the sinks in the toilet should be OK. Or is it 60C that they like to limit it to?
      That can still be "topped up" if needed.

    2. Re:Issues by cynyr · · Score: 1

      Simply using them as "pre-heat" will usually greatly limit the amount of heat needed to be added by other "non-free" means and in some cases can greatly increase the efficiency of the other heater. Can i hook my desktop and server up to a pre-heat loop in my house? at least then the heat would go somewhere useful, granted i think all the extra pumps would outweigh any energy savings. In a data center environment, it should be rather easy to use one large pump. Most data centers are a fairly constant load once they are up and running.

      I would love to have my heatpump be able to swap outside coil for water heater pre-heat coil when in cooling mode. Granted that would mean an extra water cooled condensing coil, and a receiver to handle the varied refrigerant volume, but both of those issues are overcome-able. This would mean that my heatpump all of a sudden gets very very efficient in the summer. Granted in the fall/spring when in heating mode it doesn't help out the water heater, by a good high turndown condensing water heater should take care of that or maybe even a 2 stage tankless or tankless and point of use small tank one say 3 gallons(would have to be sized based on the incoming line volume from the whole home tankless.

      --
      All of the above was encrypted with a Quad ROT-13 method. Unauthorized decryption is in violation of the DMCA.
    3. Re:Issues by FishTankX · · Score: 1

      It might be possible to use a heatpump sourcing heat from the 50c air. That would make it fantastically efficient.

    4. Re:Issues by julesh · · Score: 1

      You don't want to use an air-source heat pump if avoidable. They're very inefficient. Strip out the machine's fans and pump R134a directly across its heatsinks would be my suggestion.

    5. Re:Issues by FishTankX · · Score: 1

      Yeah, the big question though, is whether or not the savings from sourcing heat from a refrigerant system would pay for the added cost of plumbing in every single CPU in the box. Although if you managed to evacuate all of the CPU heat, you might be able to do some neat things with it, such as feed it to a neighboring paper mill or something.

  6. Been done for years. by Anonymous Coward · · Score: 0

    This has been done, at least to some extent, for many years.
    There is a local school where I live which is heated by waste from an Ericsson server park.
    One massive datacenter I was at initially used the servers to heat the swimming pool.
    Finally as the server park grew the water reached above 40 degrees c and people were starting to complain.
    Then they concluded they could heat surrounding areas with this heat as well.

  7. Stating the obvious by gilesjuk · · Score: 1

    Hardly radical. Power stations have done it for years, some other food processing factories have used the heat to warm up greenhouses to grow tomatoes.

    A radical idea would be putting data centers in a cooler climate so they can be cooled more with ambient temperatures.

    1. Re:Stating the obvious by bz386 · · Score: 2

      Hardly radical. Power stations have done it for years, some other food processing factories have used the heat to warm up greenhouses to grow tomatoes.

      A radical idea would be putting data centers in a cooler climate so they can be cooled more with ambient temperatures.

      For example like Google's Hamina data center? http://www.google.com/datacenter/hamina/

    2. Re:Stating the obvious by cynyr · · Score: 1

      most new data centers are trying to do everything they can to use "free" cooling methods. indirect evaporative cooling, air side economizer, pre-warming the incomming city water for the heaters. litterly everything, they then also simulate the cooling systems based on outdoor temps for every hour of every day in an ASHRAE standard year for the location of the data center.

      --
      All of the above was encrypted with a Quad ROT-13 method. Unauthorized decryption is in violation of the DMCA.
    3. Re:Stating the obvious by Lennie · · Score: 1

      In the Netherlands there is already a project with datacenters and greenhouses.

      --
      New things are always on the horizon
    4. Re:Stating the obvious by Lennie · · Score: 1

      Building datacenters in different climates doesn't really help.

      The reason companies like Google have as many datacenters isn't just about redudancy. But the biggest reason is the latency between the user and the server. Datacenters need to be close to the user to get the data to the user quickly.

      That is why many companies use CDN's and one of the reasons why Google started the SPDY project (because of TCP-slowstart, SPDY tries to make HTTP faster by re-using TCP-connections).

      --
      New things are always on the horizon
    5. Re:Stating the obvious by ChrisMP1 · · Score: 1

      I don't usually comment on language errors at all, but... "litterly"? Seriously?

      --
      <sig>&nbsp;</sig>
  8. It's already being done. by jgreco · · Score: 1

    We used to have a minimal heating bill in the winter back when we kept a few racks of servers on-site. Our gas bill has gone up substantially as we've moved to virtualization.

  9. Combined heat and power by pfafrich · · Score: 3, Informative

    Combined heat and power (CHP) schemes are a increasingly common using the waste heat from some process to provide district heating. Temperatures from a server farms might be a bit on the low side but it changes the situation when you look at the heat as a resource to be used rather than a waste item.

    --
    There are four sorts of people in the world: fools, lunatics, idiots and morons. - Umberto Eco, Foucaut's pendulum.
    1. Re:Combined heat and power by Midnight+Thunder · · Score: 1

      As good as all this is, I would like to see smarter server farms. For a load balanced systems there would be hot, warm and hibernate. All this would be linked to a master controller that would rev up and down the machines as needed. Also, each server would be of the form of mini-ITX, to pack more in and designed to be reach a certain maximum threshold before bringing on supporting systems.

      I am also wondering whether in a hosted environment whether there would be a way to give each customer a virtual machine that could be moved around hardware as load requirements dictates?

      --
      Jumpstart the tartan drive.
    2. Re:Combined heat and power by h4rr4r · · Score: 1

      Vmware does this already with power management, which is the same as heat in the end. It is something citrix xen also does and should not be very hard to get kvm to do.

    3. Re:Combined heat and power by afidel · · Score: 1

      RHEV (commercial KVM) already does this as well.

      --
      There are 4 boxes to use in the defense of liberty: soap, ballot, jury, ammo. Use in that order. Starting now.
  10. Patent Pending by aixylinux · · Score: 1

    I smell a patent application coming on....

  11. Multi-functional Space Heaters by Brewmeister_Z · · Score: 1

    That is what I call my computers sometimes. My office is always the most comfortable room during the cold seasons since that waste heat keep it warmer (and the fact that it is in the upper level of the home). However, in the hot season (now), it is unbearable to work on much in my office. I had 5 computer running yesterday (4 were client computer getting serviced) and it was 85 F in my office with fans going and the AC nearly runs 24/7 lately due to the heat wave. This is a 10 F difference to the middle level where the thermostat is located. This house will built in 1956 and is a partial split level. The office and bedrooms are above a garage and utility rooms on a ground level slab and the mid level is over a crawl space. Poor insulation (by today's standards) in the walls is another factor as well.

    --
    I Cater to the Needs of Stupid People. - from a coffee mug Christmas gift
    1. Re:Multi-functional Space Heaters by vintagepc · · Score: 1

      Heh... A family member of mine had that too -> Had a workstation and a 4-PC cluster for modelling computations in his office. Often had to open the window during the winter, and joked that the office should reimburse him for the heating costs they saved.

      --
      Evolution - Est. 4500000000 B.C. Don't piss in the gene pool.
  12. Not NOW. by retroworks · · Score: 1

    Damn it, NONE of us in the USA are in any mood to talk about heating our damn houses or buildings. It's 45 degrees centigrade. Can't we just save this discussion for a couple of months. It's not like a new idea or anything.

    --
    Gently reply
    1. Re:Not NOW. by cynyr · · Score: 1

      HERE HERE! and that is in the great white north that is Minnesota!

      --
      All of the above was encrypted with a Quad ROT-13 method. Unauthorized decryption is in violation of the DMCA.
    2. Re:Not NOW. by ColdWetDog · · Score: 2

      You guys have to move to Alaska. It's a nice, comfortable 55 degrees F. And my rendering cluster (a pair of old dual xeons) is making the basement nice and comfy. The Lab is currently sleeping under the rack that the computers are on because the heat is deflected downward.

      --
      Faster! Faster! Faster would be better!
    3. Re:Not NOW. by couchslug · · Score: 1

      "It's 45 degrees centigrade."

      Visiting foreigner?

      --
      "This post is an artistic work of fiction and falsehood. Only a fool would take anything posted here as fact."
    4. Re:Not NOW. by Anonymous Coward · · Score: 0

      The western desert lives and breathes
      In forty-five degrees
      How can we dance while the earth is turning?
      How can we compute when our servers are burning?

    5. Re:Not NOW. by hedwards · · Score: 1

      Liar, no American would ever refer to it as 45 degrees centigrade you impostor. For one thing it's 45 degrees Celsius and for another thing nobody in the US knows that that number means.

    6. Re:Not NOW. by Anonymous Coward · · Score: 0

      But you're still a cold wet dog. I don't think we want to be like you.

    7. Re:Not NOW. by Anonymous Coward · · Score: 0

      That's 113 in heterosexual units.

    8. Re:Not NOW. by evilviper · · Score: 1

      You guys have to move to Alaska. It's a nice, comfortable 55 degrees F.

      You and I may be polar opposites... I've just been thinking that the Southern California coast-line is too damn cold. Sure, the beach is close by, but when the temperature is usually 70 degrees, who wants to get in the water? Sure, there are the occasional 90F degree days, but even that's just warm.

      I think I need to move back out to the desert. Going for a hike in 120F degree temperatures is just more my speed. The fact that land and homes cost less than 1/10th as much, and that there's just plenty of wide open areas certainly motivates me as well.

      But I digress. I'd bet even a large swap-cooler running most of the day to cool off a house and several servers, is still using vastly less energy than your supplemental winter heating, even with your nice hybrid heating solution.

      --
      Slashdot gets worse every day... Pipedot: News for nerds, without the corporate slant
  13. Problematic assumption by xkuehn · · Score: 1

    The least expensive DFs will use the existing home broadband connection

    We have caps around here. And so will the rest of you, when the telecoms companies get their way.

    1. Re:Problematic assumption by tgd · · Score: 1

      How much data do you really think something like that will move around?

      Netflix and bittorrent, and an American subculture of people who seem to need 10 hours of video entertainment a day are why caps are a problem.

      Business servers and people who go outside tend to not run into caps.

  14. Been there, done that... by julf · · Score: 3, Informative

    http://www.guardian.co.uk/environment/2010/jul/20/helsinki-data-centre-heat-homes

    1. Re:Been there, done that... by StripedCow · · Score: 1

      Yes, but this time they patented it. Oh wait.

      --
      If Pandora's box is destined to be opened, *I* want to be the one to open it.
  15. Is this design available for home dryers? by Anonymous Coward · · Score: 0

    It would be nice to direct the heat (minus the lint) from my dryer to heat my home during the winter.

    1. Re:Is this design available for home dryers? by vintagepc · · Score: 1

      The problem you tend to get is that hot air is _very_ humid. If you've ever watched a home reno show where the original builders f*cked up the dryer vent install, you'll know how bad the mold can get from that...You'd need some way to dehumidify the air first... and that cost would probably put you at par with running a space heater or so.

      --
      Evolution - Est. 4500000000 B.C. Don't piss in the gene pool.
    2. Re:Is this design available for home dryers? by russotto · · Score: 1

      You can't use dryer air directly both because of lint and humidity, and exhaust products in the case of a gas dryer. You'd have to use a heat exchanger. This would probably be OK for the inside air, but you'd have to do something about the condensate from the heat exchanger (air from a dryer is typically saturated, so cooling it will cause condensation), and also somehow keep the lint from clogging the exchanger.

  16. bitcoin mining by Anonymous Coward · · Score: 0

    imagine a home where all heating is done by tiny computational devices that mine bitcoins http://www.bitcoin.org -> getting a reward for heating and cooking is something i like to have ;-)

    1. Re:bitcoin mining by allo · · Score: 0

      you mean, if it turns out bitcoins are worthless, at least your home was heated while mining them?

  17. Why limit the conversation? by bradgoodman · · Score: 5, Interesting
    Why limit the conversation to just servers, when this occurs everywhere in common life?

    Why does my refrigerator take heat out of the inside, and dump it into my house - requiring my A/C to then take it and again put it outside?

    Why does my A/C in a house take all the heat and discharge it outside into the atmosphere, which meanwhile a pool heater is running 5 feet away using energy to generate more heat for the pool?

    Why do people call incandescent light bulbs "energy wasters", when then can (in the cooler months) defray the work needed to be done by a household heating unit?

    Why does the Pizza place down the street run their heater in the winter yet has these giant metal exhaust ducts running from their pizza ovens, venting heat to the outside world? (Why no fins/blowers on these ducts to disperse heat into the pizza-joint?)

    The point is - people think of heating and cooling on a "unit" basis - and not on a systemic basis of an overall building - or even area. HVAC systems in buildings get this - sort of - they are not single machines - but a system of different, interconnected machines which are each interconnected, performing different tasks - sort of like organs in a human body. This approach needs to be thought of everywhere where cooling is required, and/or heat is generated.

    1. Re:Why limit the conversation? by kanweg · · Score: 2

      And why does the A/C try to release heat into the atmosphere at a moment when it is already hot (instead of dumping it into a cold buffer it prepared during the night), i.e. at a time when it is the hardest to get rid of that heat?

      And why does the A/C try to release heat at a time when electricity demand is already at peak level (instead of during the night)? It would save money building power plants (and lower the electricity bills) if they didn't.

      For a fraction of the defense budget, Americans could have saved more energy than their wars in the Middle East secured. And it wouldn't have pissed that many people off also. However, American culture halts progress, I guess. Isn't it amazing. When it comes to going to war, individual Americans don't pick up their gun and defend some sandy patch themselves for a while. There the DO realize that concerted government (military) action is more effective for the greater good (which in this case isn't very good. The US would be quite surprised if Arabs sent drones to Texas to secure their oil interests and kill some civilians as collateral damage. If something is the right thing, it shouldn't matter who does it.). But when it comes to energy, somehow unconcerted action based on individual sellf-interests would be the way to go and government should be left completely out of it.

      Bert
      With the US defense budget of 10 years, a significant portion of the US energy production could have been sustainable, even if it were spent on the most expensive one of them all: solar PV. Would have made the US probably the world's most efficient producer of solar panels. Now the export product is high velocity lead and copper.

    2. Re:Why limit the conversation? by fph+il+quozientatore · · Score: 3, Interesting

      Still, it has always stricken me as peculiar that in the wintertime people spend energy to heat the kitchen up to 20-25 C, and inside it there is a little fridge working as hard as it can to bring the temperature back to exactly the same value as outside.
      Not to mention that this refrigerator is typically located just next to the electric cooker...

      --
      My first program:

      Hell Segmentation fault

    3. Re:Why limit the conversation? by russotto · · Score: 1

      Why limit the conversation to just servers, when this occurs everywhere in common life?
      Why does my refrigerator take heat out of the inside, and dump it into my house - requiring my A/C to then take it and again put it outside?

      Why does my A/C in a house take all the heat and discharge it outside into the atmosphere, which meanwhile a pool heater is running 5 feet away using energy to generate more heat for the pool?

      Mostly because trying to use small temperature differences is difficult; solutions tend to be bulky, inefficient, costly, inflexible, and/or complicated.

      Figure out a practical and flexible way to do it and you could get rich. So you've got to take the heat from the refrigerator and dump it outside in the winter (either with ducting or plumbing), but in the summer keep it in. Your HVAC outside unit can heat the pool in parts of the spring, summer, and fall (but what if the pool is already too hot? No A/C for you?), but you probably don't want to use it as a heat pump to freeze the pool in winter.

      The reason pizza ovens don't have fins and fans for wintertime heating is likely cleanliness.

    4. Re:Why limit the conversation? by Anonymous Coward · · Score: 1

      > Why limit the conversation to just servers, when this occurs everywhere in common life?

      > Why does my refrigerator take heat out of the inside, and dump it into my house - requiring my A/C to then take it and again put it outside?

      This makes refrigerators easier to install and ship, otherwise you would have to plumb the lines to an external radiator, and get special equipment to reprime it each time it is relocated. Additionally you would want the heat inside during the cooler months, requiring two radiators and a valve.

      Of course, you could easily make this modification yourself if you believe it will save you money, just need some refrigerant line, insulation tape, a priming pump and some refrigerant.

      > Why does my A/C in a house take all the heat and discharge it outside into the atmosphere, which meanwhile a pool heater is running 5 feet away using energy to generate more heat for the pool?

      Because you didn't specify your pool or A/C to be configured this way when you had them installed. Likely this wouldn't be that practical, because the months you want your pool heated, are going to be the months you are moving heat indoors, which means the A/C ODU will be getting cold. You generally never want to cool your pool (except maybe in Arizona?), and if the weather is warm enough to use A/C, then it's probably unnecessary to be heating your pool.

      > Why do people call incandescent light bulbs "energy wasters", when then can (in the cooler months) defray the work needed to be done by a household heating unit?

      Because in the summer or any other time electric heating isn't in use, they are using more energy to produce undesired heat. In cool weather, resistive heating is still less efficient than heat pump systems.

      > Why does the Pizza place down the street run their heater in the winter yet has these giant metal exhaust ducts running from their pizza ovens, venting heat to the outside world? (Why no fins/blowers on these ducts to disperse heat into the pizza-joint?)

      This would at first seem a mystery, as ideally you would want to keep the heat in the oven. I'm guessing it is a gas or wood burning oven, so removal of the exhaust gas is a neccesity for health reasons. A radiator could be added to the exhaust ventilation, but it would need to be designed with controllable vents so that it can be excluded from the exhaust system when heating is not required.

      Likely though, they simply haven't considered it. Or someone has decided that it would be more expensive than operating heaters, rightly or wrongly.

      > The point is - people think of heating and cooling on a "unit" basis - and not on a systemic basis of an overall building - or even area. HVAC systems in buildings get this - sort of - they are not single machines - but a system of different, interconnected machines which are each interconnected, performing different tasks - sort of like organs in a human body. This approach needs to be thought of everywhere where cooling is required, and/or heat is generated.

      Yes, but in a residential home, there are not really that many sources of heat, or the small scale of them makes it non-viable to install transfer systems between them.

    5. Re:Why limit the conversation? by russotto · · Score: 1

      And why does the A/C try to release heat into the atmosphere at a moment when it is already hot (instead of dumping it into a cold buffer it prepared during the night), i.e. at a time when it is the hardest to get rid of that heat?

      A "cold buffer"? You know of a practical way to produce this "cold buffer"? Freeze a ton of water, then efficiently release the heat from same? Easier said than done.

      And why does the A/C try to release heat at a time when electricity demand is already at peak level (instead of during the night)?

      The A/C causes the peak demand.

    6. Re:Why limit the conversation? by bradgoodman · · Score: 1

      Yes, exactly! I'd thought of this - forgot to mention it in my post!

    7. Re:Why limit the conversation? by ColdWetDog · · Score: 4, Insightful

      Still, it has always stricken me as peculiar that in the wintertime people spend energy to heat the kitchen up to 20-25 C, and inside it there is a little fridge working as hard as it can to bring the temperature back to exactly the same value as outside. Not to mention that this refrigerator is typically located just next to the electric cooker...

      Convenience and cheap energy. For residential buildings, the money saved generally doesn't amount to enough to support the infrastructure required to transfer and control heat. However, in larger buildings, this sort of thing is rather normal. In theory, you could make smaller units for the house that would take hot air from the refrigerator and dump it into the living room in the winter or preheat the water for the hot water heater, but the ducting involved would either be rather ugly or have to be built in to the house. Wait until heating / cooling gets really expensive, then the savings might justify the hassle.

      The other big problem is that we're not talking about a lot of heat. Put your hands on the back of a modern refrigerator - it's warm, not hot. To move energy with low heat values gets harder (read bigger ducts / fans) and less worthwhile. Put your hands on the exhaust of a city sized natural gas fired thermal power plant and you've got some significant BTUs pumping out - it then becomes worth your while to do something with it.

      --
      Faster! Faster! Faster would be better!
    8. Re:Why limit the conversation? by Anonymous Coward · · Score: 0


      Why does my refrigerator take heat out of the inside, and dump it into my house - requiring my A/C to then take it and again put it outside?

      Because it's a very small amount of energy we're talking about. Routing ductwork to the outside would cost far more than the little bit of energy you saving in cooling costs.

      Why does my A/C in a house take all the heat and discharge it outside into the atmosphere, which meanwhile a pool heater is running 5 feet away using energy to generate more heat for the pool?

      Because the people who make the pool heater are different than the people who make A/C. Also, limited market.

      Why do people call incandescent light bulbs "energy wasters", when then can (in the cooler months) defray the work needed to be done by a household heating unit?

      Because electric heat is far more expensive than gas heat per unit energy.

      Why does the Pizza place down the street run their heater in the winter yet has these giant metal exhaust ducts running from their pizza ovens, venting heat to the outside world? (Why no fins/blowers on these ducts to disperse heat into the pizza-joint?)

      Good question. Ignorance? Complexity of temperature control? Limited market?

    9. Re:Why limit the conversation? by Anonymous Coward · · Score: 0

      You know of a practical way to produce this "cold buffer"?

      Heat exchanger in the swimming pool.

    10. Re:Why limit the conversation? by Anonymous Coward · · Score: 0

      Modern refrigerators (produced in the last 10 years) typically use on the order of 60-70 watts or so. Not exactly a lot of potential savings for a lot of effort to route cold air from the outside for a few months of the year.

    11. Re:Why limit the conversation? by lapagecp · · Score: 1

      The problem with a lot of these questions is analogous to "Why don't you stop your car to pick up a penny when you drive by one." Its a tremendous amount of work for very little pay out. It doesn't make any sense to try an get the heat produced by your air conditioner to your pool heater when a very cheap solar heater will give you a much greater payout for much less.

    12. Re:Why limit the conversation? by bradgoodman · · Score: 1

      My home A/C runs about $250 a month in hot summer months. A pool heater can run a couple hundred, if heavily used in the same timeframe. Shouldn't these two negate each other, rather than add up? These are not minor expenses!

    13. Re:Why limit the conversation? by Anonymous Coward · · Score: 0

      Rethinking building designs and the standards of living which is now ingrained, is nothing new.

      Personally, I've been doing it for years. Asking what-ifs for every possible scenario I've observed. Have I implemented anything? Nope. Not a builder.

      Sadly, the cynic in me knows getting such improvements and alternate designs into the mainstream building system, or even into prototype is almost a futile effort.

      It seems 'Change', has become the enemy of infrastructure. Amusing really, since it's a proven constant.

    14. Re:Why limit the conversation? by Gorobei · · Score: 1
    15. Re:Why limit the conversation? by Anonymous Coward · · Score: 1

      Also peculiar: Why do our clothes dryers dump the heat outside in the winter? Also, why isn't there a heat exchanger to recover heat from the exhaust to preheat the intake for the dryer? Heck, the exhaust is even loaded with water vapor which would greatly increase the efficiency of the heat exchange as it condenses on the intake (yes, a water drain would be required, much like an A/C unit).

       

    16. Re:Why limit the conversation? by Anonymous Coward · · Score: 0

      Limited responsibilities, avoidance of liabilities, fire hazards, condensation, not enough professionals capable of designing such integrated systems, lack of standards.. I think that a widespread adoption of such systems, each being a custom job, would require adoption of HPC and comprehensive modelling in the construction and renovation industries for existing and new buildings. For small companies this may not be feasible today. The idea is tempting, though.

    17. Re:Why limit the conversation? by westlake · · Score: 1

      Why does my refrigerator take heat out of the inside, and dump it into my house

      Because venting a refigerator limits where you can place a refrigerator and still keep the costs within reason. It adds weight, bulk and complexity to the refigerator itself.

      Your central heating and A/C has efficient duct work, fans, etc, for use year-round. How much does a 12 to 16 cubic foot refigerator or freezer add to the load?

      Why does my A/C in a house take all the heat and discharge it outside into the atmosphere, which meanwhile a pool heater is running 5 feet away using energy to generate more heat for the pool?

      Chances are good the pool won't be a bare five feet away and was sited for precisely the opposite reasons that you sited the A/C: You wanted the A/C shaded and the pool in the open sun.

      The function of the pool heater is to jump-start or extend the swimming season.

      You need it most when you need the A/C least.

      Why do people call incandescent light bulbs "energy wasters", when then can (in the cooler months) defray the work needed to be done by a household heating unit?

      You mount a bulb where you need more light not more heat. Low ambient lighting in casual living spaces. High direct lighting in work areas like the kitchen and bath.

    18. Re:Why limit the conversation? by corychristison · · Score: 1

      Why does my A/C in a house take all the heat and discharge it outside into the atmosphere, which meanwhile a pool heater is running 5 feet away using energy to generate more heat for the pool?

      Not everyone has a pool to heat. I'd say it's less than 10% of the North American population has one. If it's hot enough for the A/C to be turned on, turn if off and go hang out in the cold pool instead of trying to heat the pool.

      Why does the Pizza place down the street run their heater in the winter yet has these giant metal exhaust ducts running from their pizza ovens, venting heat to the outside world? (Why no fins/blowers on these ducts to disperse heat into the pizza-joint?)

      Trust me, you don't need to blow it into the dining area. They are hot enough on their own. The ventilation makes it bearable.

      Why do people call incandescent light bulbs "energy wasters", when then can (in the cooler months) defray the work needed to be done by a household heating unit?

      I live in an Apartment Building which provides hotwater/steam baseboard heat free included in my rent. CFL's save me money because I pay for my power. Everyone's situation is different, clearly.

    19. Re:Why limit the conversation? by Anonymous Coward · · Score: 0

      For your pizza joint example

      You can not BUY something that does what you say. They are literally designed to vent heat away. There is now way to reclemate it. There are very few people who even know how to do it. So your building your own pizza joint. You goto your local contractors who know the parts they use. They know a guy who does heat/air. A guy who can get you a pizza oven. A different guy who does tile. And so on... They are not sold as total systems that go together. They are sold as single units that plug into the building you build. You conform the building to the unit or you do not get a pizza oven...

      The bigger retailers can afford to custom build things. The smaller just starting out guys do not have the capital to do it.

    20. Re:Why limit the conversation? by Agripa · · Score: 1

      At least where I have lived, air conditioners had a heat output that was a fraction of the pool heater's heat output. You could indeed replace the air conditioner's air cooled condenser with a liquid cooled one which uses the pool water but to get the same heating effect as your existing pool heater will require the air conditioner to run several times as long.

      A small 50,000 btu/hr pool heater is about twice as powerful as a 3KW air conditioner after you account for the COP and you need to use the pool heater more during the times when you do not need to operate the air conditioner.

      Of course, using the pool as a heat sink for the air conditioner's condenser would raise its COP and use less energy for cooling the house so it might be worth doing anyway. Just make sure not to operate it dry and make sure it never freezes with water in the heat exchanger.

    21. Re:Why limit the conversation? by Anonymous Coward · · Score: 0

      incandescent bulbs are inefficient. a heat pump will give you more heat for the same amount of energy, and a compact fluorescent or an LED will give you more light for the same amount of energy.

    22. Re:Why limit the conversation? by Wannabe+Code+Monkey · · Score: 1

      Why do people call incandescent light bulbs "energy wasters", when then can (in the cooler months) defray the work needed to be done by a household heating unit?

      Because the power source for a lightbulb is electricity. That means heat from a light bulb can never be more efficient than that from an electric heater. And electric heaters are much more costly than something like natural gas.

      It's probably more cost efficient to get CFLs and let your gas furnace produce that little extra heat that your incandescent bulbs had been providing previously. Also, the heat from the incandescent bulbs would only be welcomed in the winter, for the rest of the year it's either completely wasteful, or in the middle of summer (or depending on where you live) downright counter-productive to your cooling costs.

      I don't mean to harp on that particular point, and I appreciated the rest of your post. I just don't get the backlash some people have against CFLs and LEDs replacing incandescent bulbs.

      --
      We always knew Comcast was corrupt, here's the proof: http://tech.slashdot.org/comments.pl?sid=1909890&cid=34545432
    23. Re:Why limit the conversation? by Anonymous Coward · · Score: 0

      It doesn't make any difference in the winter. If you want to heat up your kitchen, then it makes no difference if the heat comes from a fridge, a bulb or a heater. It is still simply some electricity. You would save nothing if you turned off your fridge and kept the food outside of the window, because the heater would have to work that little more.

    24. Re:Why limit the conversation? by Anonymous Coward · · Score: 0

      It's pretty common in the retail grocery to run heat reclaim systems. The excess heat from the freezer/cooler systems is used to heat colder areas of the store.

    25. Re:Why limit the conversation? by afidel · · Score: 1

      Why do you need to use a pool heater at all? Solar pool covers basically eliminate the need for heating even here in Northeast Ohio.

      --
      There are 4 boxes to use in the defense of liberty: soap, ballot, jury, ammo. Use in that order. Starting now.
    26. Re:Why limit the conversation? by Anonymous Coward · · Score: 0

      Who cares how hard the fridge has to work in wintertime? It's just heating the room, same as all those incandescent bulbs. Find something more 'efficient', and you'll just have to increase the heating system output by an equivalent amount.

    27. Re:Why limit the conversation? by evilviper · · Score: 1

      Why do people call incandescent light bulbs "energy wasters", when then can (in the cooler months) defray the work needed to be done by a household heating unit?

      Because resistive electric heating is the least-efficient method in common use. A natural gas, propane, or diesel furnace is much more efficient and economical. For fully-electric heating, a heat-pump is much more efficient, is just about a free add-on if you need an air conditioner anyhow, etc. And throwing geothermal in, along with a heat-pump, makes it vastly better still.

      (Why no fins/blowers on these ducts to disperse heat into the pizza-joint?)

      Probably because adding a heat-exchanger onto those ducts wouldn't exactly be cheap, and must be paid entirely by energy savings (which is probably small), and yet the pizza joint still needs a traditional heater installed, so they can't redirect that money.

      --
      Slashdot gets worse every day... Pipedot: News for nerds, without the corporate slant
    28. Re:Why limit the conversation? by Interoperable · · Score: 1

      That's if you heat with electric radiators which is a very expensive option.

      --
      So if this is the future...where's my jet pack?
    29. Re:Why limit the conversation? by Anonymous Coward · · Score: 0

      Why do people call incandescent light bulbs "energy wasters", when then can (in the cooler months) defray the work needed to be done by a household heating unit?

      Because, in terms of cost at least, electricity is less than half as efficient as natural gas.

    30. Re:Why limit the conversation? by MrNemesis · · Score: 1

      The brother of my ex is actually implementing a thing like this for his village (~500 people) in northern Germany at the moment; he's been running a small biogas plant for a few years now. But reading into the subsidies law, he saw he could get higher subsidies if he also found a use for the waste products as well - one of the big ones of course being heat. Cow shit > methane > engine > exhaust heat.

      So he hit upon piping the waste heat from the engines into houses to supplement heating systems. Running waste heat along a mile of pipe from the farm would be wasteful, so instead they're just pumping the methane into a new engine installed within the village and piping the heat out from that. As a bonus he's also installing fibre-optic cables at the same time as laying the pipes in order to run a municipal high-speed village internet. Rather a neat system all told.

      --
      Moderation Total: -1 Troll, +3 Goat
    31. Re:Why limit the conversation? by mnbjhguyt · · Score: 1

      Why does my refrigerator take heat out of the inside, and dump it into my house - requiring my A/C to then take it and again put it outside?

      passive cooled refrigerators do exist. see here for some prototipes, but I remember I read they were easer to find in northern europe.

    32. Re:Why limit the conversation? by ResidentSourcerer · · Score: 1

      Good answers. I'll add to them:

      Pizza oven: Cooking produces significant evaporation. If the oven wasn't vented it would fill with steam to the point that non-soggy crusts would be impossible.

      More generally: The source doesn't match the supply. E.g. Server farms produce heat at a more or less constant basis. But the heating needs of any attached building vary by season. So you either size the building so that the servers can heat it at the worst time of year, or you have to have dual heat sources for the building.

      Most of heat scavengers can best be used for heating domestic hot water. The demand is much closer to constant if you use tanks that are large enough to hold a day's water. Even if you use this as a pre-heat source, it could be helpful.

      Air conditioning is truely stupid. It would make far more sense to chill water at night, both to shift power use, and to gain efficiency. However given that ACs are rated in 'tons of ice per hour' it would take substantial amounts of tank.

      Example.You have an AC that moves 20,000 BTU per hour. Suppose on a mixed duty cycle it runs 5 hours a day. So that 100,000 BTU. So you chill water to 35 F, and in use you warm it up to 75 F. 40 degree delta means 2500 lbs of water -- about 300 gallons. Multiply appropriately for larger AC or longer duty cycles. Note that you can get some tank advantage by using brine (cheap, but corrosive) or antifreeze (expensive, poisonous) as the coolant.

      --
      Third Career: Tree Farmer Second Career: Computer Geek First Career: Teacher, Outdoor Instructor, Photographer.
    33. Re:Why limit the conversation? by toddestan · · Score: 1

      Hell, why don't people think about where they put their A/C compressor? Placing the thing so it's not sitting in the sun all afternoon will save energy, and for new construction would be a minor change. Yet I see new houses all the time with the A/C compressor sitting exposed to the southern sun with no shade.

    34. Re:Why limit the conversation? by lapagecp · · Score: 1

      How big is your house. I can not image a situation where it would be so hot that it required $250 a month to cool your house but your pool was still to cold to use without a heater. Still I think you were missing my point. Do you have an air conditioner that is equip to be liquid cooled? What do you think it will cost to get one, or retro fit your existing one. How about pipe the water from the pool to your condenser? Once you are all done your air conditioner isn't going to be able to raise the temp of your pool much at all. What are you going to use to supplement.? Lets put these costs in perspective. A 2008-2010 Energy Star refrigerator uses around 500kWh's per year. That's $75 a year at 15 cents a kWh. So lets say you have a unit that can use the outside air when its cold. What percentage of the year is it cold enough to do so. Lets say that between the refrigerator and freezer its cold enough on average 50% of the year. That's a savings of around $37.50 a year. Until they get mainstream its going to most likely take over 10 years for that system to pay for itself if ever.

    35. Re:Why limit the conversation? by Anonymous Coward · · Score: 0

      On larger scales, like apartment buildings and medium-sized commercial buildings, people do this already. The main issue at the small scale is cost. Heat exchangers are actually pretty expensive and have to be cleaned. Custom HVAC engineering is very expensive, so on the small scale we do things with mass-produced components.

      Incandescent bulbs are still energy-wasters because the benchmark is not electric heat but oil or geothermal (ground-source heat pumps). Both of those are around 3x as efficient in ultimately heating your home as resistive heating. (Well, worst case. Heat pumps can be much more efficient sometimes. I happen to live near the worst case.)

    36. Re:Why limit the conversation? by black+soap · · Score: 1

      The Colorado School of Mines uses steam from the Coor Brewery to heat the buildings. Also note, none of the mountains near the Coors Brewery look anything like the commercials.

    37. Re:Why limit the conversation? by Anonymous Coward · · Score: 0

      Upfront cost. Even if there was a way to standardize heat transfer through various appliances (pool heater, fridge, hot water heater, air conditioner, etc), having a series of valves and pipes throughout a house would cost quite a bit, and probably wouldn't pay for itself in efficiency gains.

  18. Links: Some Good Working Examples by 1sockchuck · · Score: 2

    As others have noted, there are many good examples of data center reusing waste heat. Here's a list of examples of server heat being recaptured to warm homes, offices, greenhouses and even swimming pools. This is common enough that The Green Grid recently released guidelines on the best way to integrate heat recapture in key efficiency metrics like PUE (Power Usage Effectiveness).

  19. Remember the Cray 1? by airfoobar · · Score: 2
  20. City boy knows nothing about barns. by Anonymous Coward · · Score: 1

    Actually, recently I've been thinking about the way some barns are constructed. Where they have have windows at the apex of the roof. I guess that channels the heat up and lets it out right?

    No, that's not their purpose at all. Those aren't "windows". They are hatches. They aren't used for ventilation purposes, and they aren't used to let light in.

    Most barns have at least two levels. Some that are built into the side of a hill can have three or more levels. Above those levels there is what's called the "loft". The hatches you're referring to lead to the loft.

    The loft is usually separated from the lower floors by a wooden (or metal or concrete, in newer barns) floor, with one or two stairways leading down to the lower levels. There are very few pathways for light or air to move from the loft to the lower levels.

    The hatch you're referring to is used to more easily move items, goods and material up to the loft, which can otherwise be difficult to access. Outside of the hatch there is usually a rope-and-pulley apparatus that can be used to lift or lower items. The items can be placed into or removed from the loft using the hatch.

    1. Re:City boy knows nothing about barns. by Anonymous Coward · · Score: 1

      No, that's not their purpose at all. Those aren't "windows". They are hatches. They aren't used for ventilation purposes, and they aren't used to let light in.

      I think he's referring to a cupola which is a small louvered structure on top of a barn often used to vent excess heat.

    2. Re:City boy knows nothing about barns. by Anonymous Coward · · Score: 0

      I think he's referring to a cupola which is a small louvered structure on top of a barn often used to vent excess heat.

      And also used to let owls in so they can build their nests under the roof and provide pest control free of charge.

  21. Xeon-roasted chicken by drolli · · Score: 1

    nothing more to say about this.

  22. Bitcoin miners have known about this for a while by mathimus1863 · · Score: 2

    I realized this at the end of winter when I had 8 high-power GPUs running in my condo mining Bitcoins, and my central heating was not running anymore. You put your hand behind one of the quad-GPU computers on full load, and it feels like a blowdryer, running 24 hours per day. Seemed to have no problem heating 1200 sqft. This seems to apply to GPUs more than anything, though. I don't know how many CPU servers can produce 1.5 KW of heat...

  23. At one place I worked by Anonymous Coward · · Score: 0

    The server room was in a small space behind the bathroom. We had to vent the server room into the bathroom and I joked that we could use the 4 inch pipe as a hand dryer. The next day an elbow was on the pipe and a pipe went down to hand level. It was one of the best hand dryers I have ever used.

  24. Re:Bitcoin miners have known about this for a whil by Anonymous Coward · · Score: 0

    A core i5 2500k is rated at 95W full throttle, overclock and you get more.

  25. ETH in Zürich Switzerland by toby · · Score: 1

    ...has done this for decades.

    --
    you had me at #!
    1. Re:ETH in Zürich Switzerland by pluther · · Score: 1

      So has Tektronix in Beaverton, Oregon.

      --
      If the masses can keep you down, you're not the Ubermensch.
  26. Energy out = energy in - work done? by KreAture · · Score: 1

    By increasing the number-crunching we increase the power requirements of the CPU and the energy in, and heat out.
    This much is self-evident.

    However, is number-crunching work? If so how much work?
    Feeding n watts into a system and crunching math at m mips. Does that leave us with n-k*m power out where k is some magic constant not necessarily unrelated to m already and varying with the machine?
    Do you then want a low k-factor or will they simply increase the power in so that you don't freeze?

    1. Re:Energy out = energy in - work done? by Anonymous Coward · · Score: 0

      k is 0 due to conservation of energy. Some people claim a non-zero k (but extremely small) based on the information entropy of what you're computing.

  27. That could work. by Anonymous Coward · · Score: 0

    Heat collected in the data center could power furnaces on the lower levels, which would send warm steam to higher floor, so that the environment for directors would be cozy and moisty -- lower levels being cramped and hotter (because of the furnaces) seems a fair price to pay.

    Directors would be walking amid the warm fog -- in a kind of Heaven while workers would sit all day long next to furnaces. They wouldn't last much, but hey, who wants to live in such hell forever?

  28. Heater? by Anonymous Coward · · Score: 0

    I guess this doesn't help in places where you don't need a heater. Nobody I know ever uses a heater in South Florida. If only the surrounding heat could be put to good use! It sure takes quite a bit of current for central A/C to move the heat outside.

  29. The Article Doesn't Really Make the Point by stevelinton · · Score: 1

    The idea, I think is that these servers are your cloud infrastructure, rather than being used for any local purpose.
    Imagine a future where computer technology is a bit more stable than it is now, so a server has a 10 year or so useful life before becoming obsolete. Also you have fibre to every apartment building or office block.

    Now, you want to convert some electricity into heat for whatever reason. So you buy/rent a "brick" of servers of suitable size, probably an all-solid state affair with no moving parts at all, plug it into the power and the internet and arrange to move heat out of it for whatever purpose you have. As far as you're concerned that's it, and this is cheaper for you than just buying or renting a conventional electric heating element (ie you get paid, or subsidised power for doing it).

    As far as the user of the computation is concerned, they buy computation and related services from Amazon or someone, just as they do now.

    The middle-man is running a complex management layer that migrates VM instances and data around the millions of "bricks" that they manage, and allocates each as much work to do as the demand for its heat output requires. Balancing the compute demand against the heat demand requires partly scale, partly non-urgent background jobs, partly blanacing load between time zones and hemispheres and partly a few conventional data centres that can fill in any gap.

  30. Re:Bitcoin miners have known about this for a whil by Anonymous Coward · · Score: 0

    McDonald's and KFC are now accepting bitcoins.

    I used them earlier today to purchase happy meals for my kids, and a huge bucket of gravy from KFC for myself. I know it isn't real gravy, but it still tastes good, and it was worth it just to be able to use my bitcoins.

  31. You have it backwards by goombah99 · · Score: 1

    And the problem with it in most cases is that servers shrink over time. Every new generation is both smaller and more power-effiecent, or they just plain get moved.

    Which means that in 15~20 years you are barely supplying enough heat to overcome heat losses in the system. And the homes and offices have no heating.

    Sigh... Let's think about this shall we. The reason we currently discard our serveres every 3 years is that the operating costs per compute cycle savings exceed the capital costs of new servers. But these servers have negative operating costs. They will never go obsolete in terms of operating costs per computer cycle. They will only go obsolete when the wall clock time for a calculation becomes undesirably long. For certain kinds of servers (such as ones that are bandwidth starved) the machine will fail from old age first. This very long life cycle means it will be worth the extra cost of putting in very high reliability components.

    The reason the paper is important is that it works through the less obvious but more important details. For example, there will be pluses and minuses to distribution. Residential electricity costs more than COmmerical electricity. Bandwidths will need to be upgraded. One of the big costs is the data center itself and that includes air circulation, facility maintanence, floorspace for egress not just cooling power. Don't forget about bathrooms, lights, floor cleaning and 403Bs for all the people who maintain the facility.

    --
    Some drink at the fountain of knowledge. Others just gargle.
    1. Re:You have it backwards by FooAtWFU · · Score: 1

      Two points. First, it's not certain that the machines will have negative operating costs - reduced operating costs, sure, but using electricity for heating has always been a silly-expensive way to do it (exclusive of certain areas with ridiculously good hydro power). Secondly - 403(b)s? I'm pretty sure those are for educational institutions, non-profits, and the like... not businesses and utilities.

      --
      The World Wide Web is dying. Soon, we shall have only the Internet.
    2. Re:You have it backwards by Oxford_Comma_Lover · · Score: 1

      Poster probably works in admin for an educational institution; call it a 401(k), the logic still applies at this level of generality.

      --
      -- IANAL, this isn't legal advice, and definitely isn't legal advice for you. Also, Squee!
  32. Prime 95 by Anonymous Coward · · Score: 0

    I remember a cold winter when my heater was on the fritz and the only way I got through the night was a couple of Pentiums running Prime 95.

  33. Mod up parent by Anonymous Coward · · Score: 0

    parent is only thread praising this.

  34. Why not use by Anonymous Coward · · Score: 0

    Peltier devices and harvest the heat? OOPS, that would be possible and ALMOST useful, almost.
    Take the heat and use it for a useful purpose... too green possibly?

  35. My PC sits right underneath the thermostat by sandytaru · · Score: 1

    Just the way the house got laid out, unfortunately. I had to switch to a more thermal efficient system just so the heater would actually run in the winter time.

    --
    Occasionally living proof of the Ballmer peak.
  36. This is news?!? And they get a paper out of it?!? by Anonymous Coward · · Score: 0

    University of Sherbrooke (in Quebec) has had this --- heats up some of its buildings using heat from their (rather large) cluster. I am sure they are not unique or at the cutting edge (Canadian universities are nowhere near as well funded as American ones).

    At least there are other people at MS Research that do truly original and insightful work.

  37. because by Anonymous Coward · · Score: 0

    our political/economical/monetary system dictates that "waste" does not exist unless you can profit by eliminating it.

  38. BOINC by Anonymous Coward · · Score: 0

    I used to heat my living room with just my PC running a few interesting BOINC projects in the colder months of the year:

    http://boinc.berkeley.edu/

  39. Not new.. FOOD by Chuby007 · · Score: 1

    This is not new, I still fry my eggs on an old AMD processor, after that is done, I just place my coffee mug on top, it stays warm all day...

  40. Energy wasting technology by sjbe · · Score: 1

    Why do people call incandescent light bulbs "energy wasters", when then can (in the cooler months) defray the work needed to be done by a household heating unit?

    Because they are energy wasters. The furnace in your house is FAR more efficient at producing heat than the incandescent bulbs. It's not even a close comparison. Your basic point about how we should be using (and re-using) waste heat as much as possible is a good one but that isn't a reason to use energy wasting technologies for their by-products.

    I do love the idea of using waste heat in useful ways but let's not generate waste heat on purpose.

    1. Re:Energy wasting technology by bradgoodman · · Score: 1
      So, silly question. Where does the energy "go"?

      My impression was that a 100kW bulb uses XkW to generate light, and the rest is "wasted" as heat. So, in fact - whereas my furnace wastes some energy turning the blower motor, and some energy running the thermostat (albiet a very little), and some energy from heat which is lost in the chimney duct work in my basement, and even more as the heated exhaust is expelled through the roof - couldn't it be said that a light-bulb expends *all* of it's energy in either heat or light? Where does the "wasted" energy go??

      This is aside from the fact that gas/propane/goal heat may be more efficient itself than the delivery, production, transfer and subsequent conversion to electric heat.

    2. Re:Energy wasting technology by hackertourist · · Score: 3, Informative

      The 'aside' you mention is actually the main point. Even the most efficient power plants top out at 60% efficiency. Assuming your house is heated with gas, not electricity, this means that the light bulb is slightly over half as efficient as your gas furnace.
      For a recent (less than 15 yo) gas furnace over here (.nl) efficiency is in the 95%+ range, thanks to government incentives towards more efficient systems. Dunno about the US situation.

      Also, heat and light needs don't overlap: you'll be running those same lights in the summer, when your AC will be running overtime to pump out the excess heat from the damn bulbs.

      Finally, the effect of light bulbs on heating is negligible. My central heating is rated at 25 kW, and I have 13 light fixtures. If I installed 100W incandescent lights everywhere I would generate ~1300W in heat, or 5% of the peak capacity I need.

  41. Ah, yes. by Oxford_Comma_Lover · · Score: 1

    What also works, and studies back it up is just putting in a dummy thermostat. people who complain it's too(hot/cold) suddenly stop afterwards.

    Efficiency through lying. How normatively cute. :)

    (The other common placebo example is the close door button in elevators.)

    --
    -- IANAL, this isn't legal advice, and definitely isn't legal advice for you. Also, Squee!
    1. Re:Ah, yes. by Khyber · · Score: 1

      That isn't a placebo. Close door buttons function with the firefighter key in the elevator control panel.

      Without the key, the button is not functional, only the open door.

      --
      Still waiting on Serviscope_minor to wake up to fucking reality and realize that Jessica Price isn't going to fuck him.
    2. Re:Ah, yes. by andymadigan · · Score: 1

      Those buttons do work in my great-grandmother's nursing home. It seems the elevators are timed for people who are moving slowly or are in wheelchairs, but pressing the button makes the doors close. (Normal time for the doors seems to be about 2 minutes).

      --
      The right to protest the State is more sacred than the State.
  42. Cogeneration by LoRdTAW · · Score: 1

    The is similar to power plants using waste heat in the form of steam exiting the turbine(s) to heat local negiborhoods. It makes sense to recycle the heat but in the summer your back to trying to get rid of it.

    I think its possible that the cooling water from such a system would be hot enough to operate a turbo expander type power generation system. You could attempt to turn some of the waste heat back into electricity. That would be useful year round and in hotter climates where heating is unnecessary.

  43. Re:Bitcoin miners have known about this for a whil by Anonymous Coward · · Score: 0

    I tried to research this a few months ago, but is bitcoin mining in any way profitable?
    In your case it seems like you spent 4 grand on gpu's, then have to spend hundreds a month in power/cooling, get free heat, but for what kind of payout?
    Does it pay for itself? can you pay rent from it?

    My podunk little 48 CUDA core gpu can barely mine by the penny.

  44. Did they steal my idea? by Anonymous+Freak · · Score: 1

    Last year, I entered a Microsoft-sponsored contest that promoted home energy efficiency. You had to demonstrate how you had improved your home's efficiency, and explain what you would like to improve. (The prize was a few thousand dollars to Home Depot, IIRC.)

    Among other things, I demonstrated that in my basement, where I had recently added insulation and replaced the old windows with new energy efficient ones, I have a home office with no heating in it. Yet just leaving my server on and at full processor load is enough, in the dead of Winter, to make the room TOO warm. (Compared to a spare bedroom upstairs with horrible old insulation and windows where it was 55F if I left the heat vent closed and door to the rest of the house closed.)

    (Yes, I know I'm not the first person to think of this, I'm not ACTUALLY accusing Microsoft of stealing my idea...)

    --
    Another non-functioning site was "uncertainty.microsoft.com."
    The purpose of that site was not known.
  45. Illegal by Anonymous Coward · · Score: 0

    It will be eventually illegal to convert electricity directly to heat, without useful computations. So your electric water heater and iron will come with built-in servers.

  46. Canada is on another continent&U have a map of by D4C5CE · · Score: 1

    I am sure they are not unique or at the cutting edge (Canadian universities are nowhere near as well funded as American ones).

    But they do teach geography, for one thing. ;)

    SCNR...

  47. summer:laptop winter:desktop running Folding@Home by Anonymous Coward · · Score: 0

    My next house will have a tiny room for my water heater and computers to share.

  48. Recently, at the Dean's indictment hearing... ;-) by D4C5CE · · Score: 1

    "Your honor, since even on Windows the latest crop of computers has become way too energy-efficient to heat the dorm halls, that clustered brute-forcing of the **AA master key by our CS class must have been a completely unintended by-product of their attempts to survive the winter term without freezing..."

  49. I never turn on the heat in my apartment by Nyder · · Score: 1

    thanks to my 2 computers, I7 cpu's, my 2 monitors, my big ass 1080p tv, I never turn the heat on in my apartment (studio, live in seattle). In fact, i usually have my windows open all year around. I don't pay for heat. Sure, during the Summer it can suck a bit, mainly if we hit over 90, and if no air is blowing can stay too hot at night, but hell, I don't pay for heating.

    I do though, seem to have a nice high electric bill.

    --
    Be seeing you...
    1. Re:I never turn on the heat in my apartment by El_Oscuro · · Score: 1

      You probably can't do this in a studio, but I got a Power monitor. Literally paid for itself in the first week. It is hot as shit this year in VA , however my electric bill is only about $200, down from $300 last year. I adjusted the settings based on the meter. And guess what, the A/C works better at these new settings. For your studio, you can get a Kill-a-Watt and see which of your computers is drawing the most juice. You have those nice cool summers in Seattle, so buy a window fan to get some that nice cool air and adjust your computer power settings for summer. You will save lots of $.

      --
      "Be grateful for what you have. You may never know when you may lose it."
  50. Re:Bitcoin miners have known about this for a whil by Anonymous Coward · · Score: 0

    It used to be, but not anymore. This is actually one of the "features" of BTC: there's a competition incentive to dump resources into mining, but every time you do so, it becomes harder to get the next coin.

  51. I can hear my wife by shinehead · · Score: 1

    "Honey, I'm cold. Compile something.

  52. Winter time data crunching! by Anonymous Coward · · Score: 0

    During winter crank up the CPU cycles, especially in 'colder' countries. Heck, have a data center up in Alaska and pump the excess heat into a nearby sauna.

    Even better, create world largest datacenter where winters get really cold and put world's largest outdoor hot tub beside it! Since data centers never shut down your water would always be piping hot!

    Actually, how much heat IS generated by some of the larger data centers and just how big a hot tub would you need for a heat sink?

  53. Re:summer:laptop winter:desktop running Folding@Ho by corychristison · · Score: 1

    Screw Folding@Home.
    Mine BitCoin! At least if you mine long enough you can convert the Bitcoin into Newegg gift cards or something.

  54. It's not a new concept... by ksemlerK · · Score: 1

    ...and it's how I heat my apartment. I already use my computers to heat my home during the winter months, and I keep it comfortably 80 degrees in here. I have turned off the circuit to my baseboard heaters, and soley use computers running SETI@Home to heat my apartment. Why do I do it? Simply because it's cheaper. If I use baseboard heaters to heat my apartment, it costs $300/mo. Using my computers to heat my apartment, it costs $115 a month. It's cheaper to heat my place running a datacenter then it is to use residential heating.

  55. heat pumps by Anonymous Coward · · Score: 0

    because heat pumps are a far more economic and efficient way to heat a home

  56. Ancient Technolggy by john.r.strohm · · Score: 1

    In summer of 1981, I worked for Charter Information in Austin TX.

    They ran a Xerox Sigma 6 (nice machine for the day). They'd moved down from Woburn MA a few years earlier. When they'd set up their offices in Woburn, they'd run a duct from the computer cooling air exhaust to the building HVAC ducts. They reported that they didn't have to start their oil burners at all during Massachusetts winter: the waste heat from the Sigma was enough to heat their entire office suite.

    That was over thirty years ago.

    You young whippersnappers need to learn some history. And GET OFF MY LAWN!!!

  57. I disclosed this in 2009 to open manufacturing by Paul+Fernhout · · Score: 1

    http://groups.google.com/group/openmanufacturing/msg/4298e48e35b7efc0?hl=en
    "Now, there are probably lots of ways you could do this [grow cell cultures as agricultural liquids like orange juice] that you know more about that I. But here is what I envision for home use (as opposed to big industrial use).
        You have two versions. One is for outdoors, and is a big machine you set up in you yard with a glass top that has photosynthesizing algae that either produce the liquids directly or produce something that feeds another culture specific to a plant or animal derived culture specific to what you want to make. You need to add water, but for extra nutrients, you also add ground up rock dust (Smari could sell everyone some from Iceland :-) or you add seawater.
        For indoor use, you replace your home furnace with these things as presumably they would give off heat if indoors you lit them with artificial lamps or if they consumed oil or natural gas (bio-derived elsewhere) as feedstocks. Again, you add water and rock dust (or seawater). So, you have year-round indoor agricultural liquid production at very low cost.
        (I'll give away an idea here as a patent-preventing disclosure that I've been hoarding. :-) You could have this or any other local industrial process be thermostat controlled (or predictively controlled, or timer controlled, or some combination), so if your house or facility needs more heat you run the process; and if your building is hot enough for your needs, you don't run it, thus using local industrial-like processes to regulate your homes climate. For processes that absorb heat you could do the inverse for air conditioning. You can do that with networked computers too, so if you need heat you do local computation for the network, if you don't need heat, you shut those processors down. Special processor units or industrial process units for various purposes could be designed to replace regular electric baseboard heaters or central furnaces. So, essentially, industry is running for no extra energy charge where people use electricity to heat, and it runs at a subsidy where people use currently cheaper ways to heat like oil or gas or wood. And sometimes you might want to produce stuff anyway, and so you would need to dump the waste heat or use it in some other way or store it in some thermal storage system like a water mass or sand mass or phase changing salts or other such system, with the stored heat being used as part of the thermoregulatory planning. Of course, if you insulated your home well, you might not need a furnace, so there are economic limits to this idea as people improve their infrastructure in other ways...)
        This would totally change how agriculture was done. Instead of having lunar moonscapes like Iowa is part of the year, people would just produce their own agricultural liquids in neighborhood facilities or at home, using the local waste heat for other purposes as well. Most agricultural lands could be returned to wilderness. The total energy bill for a home might not go up very much using the above idea for thermostatic regulation. "

    A week ago I sent something to GE about this idea for their ecomagination challenge --even though I missed getting the idea into their contest, I wanted people to know about it. But it is not listed here yet (if ever):
    http://challenge.ecomagination.com/ct/ct_list.bix?c=home

    --
    A 21st century issue: the irony of technologies of abundance in the hands of those still thinking in terms of scarcity.
  58. May have already been done by MSDos-486 · · Score: 1

    I remember reading somewhere (may have been Slashdot) a while back that there where buildings designed in the mainframe days to draw heat from the "computer room" to heat the buildings. Unfortunatly when computers got smaller and cooler they had to install extra heating systems in these buildings.

    I may be remembering this wrong though.

  59. try it in winter by jonpublic · · Score: 1

    My boiler broke this past winter and I had to run 2 space heaters a week until it was fixed.

    Let me tell you, electrical heat is super expensive. Those space heaters for that week cost more than the 1955 natural gas boiler did in a month.

    1. Re:try it in winter by black+soap · · Score: 1

      I had a thermodynamics professor who made everyone calculate running an A/C backwards (use it to pump heat in instead of out) compared to resistive heating by electricity. Resistive heating is a very poor use of electricity.

  60. Recipe for stew by AlejoHausner · · Score: 2

    Ingredients:
    1 lb of beef chuck, chopped into 1-inch pieces
    2 cloves garlic, minced
    1 onion, chopped
    2 tbsp oil for frying
    one bay leaf
    salt and pepper to taste
    water
    Directions:
    1. Attach a large pan directly to the server CPU with heatsink compound, and brown the beef, a few pieces at a time, to avoid steaming them. Set aside.
    2. Detach the pan from the CPU about 5 mm, and sautee the onions until golden brown, about 5 minutes.
    3. Add the garlic, sautee 1 minute.
    4. Add beef, salt and pepper, bay leaf, and water to cover.
    5. Place pan over 1kW multi-GPU exhaust, and simmer two hours, or until meat is tender.

  61. Duh. its called a heat pump! by alanshot · · Score: 1

    At two of our locations we have Mitsubishi R2 heat pump systems that are capable of running both heat/cool modes simultaneously.

    The beauty? The waste heat that is removed from my server room in the winter via cooling mode is exchanged within the system and makes the heat side more efficient, transferring that heat energy to the rest of the building.

    So instead of paying for the electricity to turn it into bits and bytes, and then paying AGAIN for even MORE electricity to move that waste heat to the roof via the AC unit, and then even MORE electricity to heat my cube farm, I'm now able to move the waste heat to my cube farm directly, skipping the middle step. Not only do I skip the middle step, but I greatly reduce the amount of energy required in step 3.

    LOVE IT!

    (and our accountants love the lower utility bills of heat pumps vs gas fired heat)

  62. You want heating? by Cant+use+a+slash+wtf · · Score: 1

    WORK HARDER!

    I can see this solving a lot of problems with lazy workers in cold climates.

  63. Data Furnace by Anonymous Coward · · Score: 0

    Make lots of jerky. Beef jerky. Pork jerky. Turkey Jerky. Shrimp jerky. Lots and lots of jerky.

  64. Even more interesting is onsite cogeneration by afidel · · Score: 1

    There's a company out there selling 100kW gas turbines where the waste heat is used to power absorption chillers, a complete datacenter solution without reliance on grid power.

    --
    There are 4 boxes to use in the defense of liberty: soap, ballot, jury, ammo. Use in that order. Starting now.
  65. How about in places that get hot? by antdude · · Score: 1

    My room can go up to 90F degrees upstair in Los Angeles/L.A. area. :(

    --
    Ant(Dude) @ Quality Foraged Links (AQFL.net) & The Ant Farm (antfarm.ma.cx / antfarm.home.dhs.org).
  66. Re:Bitcoin miners have known about this for a whil by dbIII · · Score: 1

    In other words a pyramid scheme. The early adopters gain advantage from all the suckers that come after them and nothing of comparable value to the scam is produced. The cool maths, software and hardware is really just the art on the box designed to being in the suckers.

  67. KERS by Anonymous Coward · · Score: 0

    Eh, what we need to do is look to F1 ... some Kinetic Energy Recovery Systems convert the heat energy of braking into electrical energy which is stored and then returned to the system as a ~60HP boost. Computers generate a lot of heat and we could be cranking out the HP. Um, well, let's just leave the electricity as electricity then.

    I understand that converting heat to electricity is rather lossy and using heat for heat is a win, but I suspect the problem is distributing heat over any distance, not to mention that it's not very useful in the summer.

    Heck, I want KERS for my computer so it can drop energy consumption when my computer starts to overheat.

    Overclockers please take note of the massive amounts of electricity you could be generating!

    http://en.wikipedia.org/wiki/KERS

  68. Microsoft "inventions" by Tug3 · · Score: 1

    Microsoft R&D is really firing on all cylinders again, or should I say "on all photocopiers"... But then again, what would you expect from a company that made it's money (and a lot of it) from marketing other's ideas as their own.

    not really anything that new: http://www.guardian.co.uk/environment/2010/jul/20/helsinki-data-centre-heat-homes

    --
    If all else fails, pull the plug and get out...
    The Life is out there...
  69. Funny use of words... by mevets · · Score: 1

    The summary says "this is a serious...", which always strikes me as odd. Despite the ubiquity of laugh tracks, jokes shouldn't need an introduction; if you don't get it, you probably don't know you don't get it. In the absence of something absolutely ridiculous, phrases like ' this is serious ', stand out as an indicator of ' this is quite stupid '.

    Imposing the word 'work' has a similar implication. The telephony system didn't need to superimpose 'work' into its terminology to assert that telephones actually worked; nor did television. Not unsurprisingly, netWORKs did.

  70. Good for drying clothes by Anonymous Coward · · Score: 0

    I ride a motorcycle to work, and last week was 5 days of solid rain. My jacket is 15 years old and the leather has cracks throughout, so waterproofing is a bit hit and miss. Lately I've gotten into the habit of hanging it on a trolley in the exhaust row in our computer room, not sure if it's great for humidity but it dries a soaked jacket in a couple of hours!

  71. secure executions on untrused devices by CSMoran · · Score: 1
    The paper says:

    Virtual machine encapsulation ensures certain degree of isolation. Secure executions on untrusted devices are feasible.

    Can someone competent explain what they mean by the second sentence? Or a ResourcePtr to a specific term?

    --
    Every end has half a stick.
  72. Re:Bitcoin miners have known about this for a whil by toddestan · · Score: 1

    If your goal is to generate bitcoins, a fast GPU will smoke the Core i5.

  73. Re:Bitcoin miners have known about this for a whil by Anonymous Coward · · Score: 0

    you should try damn pentium D cpu's :))

  74. Containerized Datacenter+Agriculture by Anonymous Coward · · Score: 0

    Now that hydroponic systems are now being manufactured in standard ISO container sizes, It's only a matter of time before large datacenters with containerized server clusters are sitting together with containerized urban hydroponics systems. Running heated cooling water through the agricultural system heat exchanges kills two birds with one stone.

  75. Could really large heatsinks w/o fans.... by Anonymous Coward · · Score: 0

    Normally, these CPUs need cooling systems of their own. The heat sink is there, but on top of it, a fan is also needed to ventilate the heat out of that area.

    I was wondering something - say, one took an open motherboard on a rooftop over some really cold areas, like Canada or Alaska, and instead of the fan, had a huge heatsink that had its fins and wings going all the way out. Ensure that it's in an area where there is reasonable winds and low temparatures. Have a shed over it so that rain or snow doesn't make it untenable, and use it to warm up that area, in addition to doing the bitcoin mining, or whatever other compute-intensive work it could do.

    Would such an idea work? And if it did, couldn't one take a massively parallel system, w/ say 256 CPUs, and use it to warm up a major area? Too bad these ideas weren't around when DEC existed, and their Alpha CPU existed. That was the fastest (in MHz) CPU, and also the hottest. Had they still been around, one could have done some serious heating w/ them.

  76. A little cloud in every home! by Sir+Realist · · Score: 1

    Yeah.

    So if you're heating houses with cloud servers, then you're stuck with transporting the heat somehow from your data farm to your houses. The obvious solution being to put the server in the house. If everyone ends up with their own cloud server in their house, is it still a cloud? Or is it just a desktop again?

  77. We did this by Anonymous Coward · · Score: 0

    Space heaters were banned at my place of employment. So I and my officemate got three big servers and set them to encoding/decoding video content. Toasty!

  78. Been there, done that by engineereeyore · · Score: 1

    We actually had the gas turned off at our building this winter after the gas company had several pipes burst. Fortunately for me, my office mate has two old Pentium 4 computers that he uses for miscellaneous stuff now and then. That day, they served as very efficient space heaters. While it was 50-55 degrees in the hallways and in most offices, we were a very comfortable 75 degrees. That being the case, I think this should work just fine!