Yes, convection is crappy because radiation heating produces a much better warmth. I've had both air-conditioning heating and radiator heating in my appartment. The hot air that the AC produces does nothing to warm your feet, rises to the top and is not as comfortable as the radiator. However, as others have noted, this might be working using liquid cooling, which is not what I had in mind when I wrote the first comment. If you get the heat from the CPU directly into some liquid, you could use it for underfloor heating, which is awesome.
Because this business model is not well though-of. Internet informs me that AMD Ryzen 7 PRO 1700X consumes 95 W of power, much like an old-school light-bulb. Crappy oil radiators seem to start at 600 W (about 6 CPUs) and better ones have a power consumption of up to 2500 W (26 CPUs). Having used such radiators myself, I would definitely go with the bigger one. Other points of interest are the surface area, the surface temperature and the heat transfer mechanism that are different between a 2500 W oil radiator and a 26 CPU rack. Even if the CPUs reach a rather elevated temperature (1700X maxes out at 95 C), the surface temperature of the rack is only going to be luke warm, so you're not going to get any heat radiated to you. The heat is going to reach you by convection via the fans, which is a crappy way to warm yourself up. Then you would need a full rack at least in every other room to heat up a whole home, which will take up a lot of space.
If you're going to run a data center, the only thing this will save is the real-estate space. The costs of installation, transportation etc, however, are going to eat away most of the savings in my opinion. I suppose, of course, that Qarnot will be paying for the electricity. If not, then they are just looking for chumps that would be better off switching back to incadescent light bulbs.
This year's books: 1. Werner Munter 3x3 Lawinen (in German). A book on estimating the probability of an avalanche and how to reduce the avalanche risk while skiing) 2. Yanis Varoufakis, And the weak suffer what they must? (in English). A book on the recent/ongoing European economic crisis. Very eye-opening. It strengthened my pessimism on the topic, although the book itself ends in a rather optimistic tone. It confirmed my suspicion that the former greek finance minister was more of an academic and less of a competent politician. 3. Charles Bukowski, Post office. Finished it in a day. There are very few books that can be read so easily and be so multy faceted and insightful at the same time.
I would be inclined to vote for Post Office, but the book on avalanches is already proving itself quite useful...
A lot of people are rooting for Legos and I don't really disagree, but my personal experience as a kid was waaaaay better with Meccano. The box had a booklet with instructions for various stuff, but at the end it had an "advanced" category where each model was only shown using three pictures. You had to figure out the rest yourself. It was awesome.
OMG, I made a terrible mistake. That'll teach me to post such things late at night with a low blood sugar...
For the temperature, of course, you need the increase factor, not the difference! So there is T1=20 C=293 K and T2=3200 C=3473 K. So now properly we get T2=3473*T1/293=>T2=12*T1 (approximately).
So there you have it: Factor 12 pressure increase from the temperature and factor 0.67 pressure decrease from the molecule change. The temperature still wins.
You need an equation of state. Let's assume that we're dealind with ideal gas mixture so we get: P*V=n*R*T. R is a constant and since you ask about the pressure, I'll assume that you keep the volume constant, so V is also a constant. Now you need to write the equation down for the before/after case, say with subscript 1 for the reactants and with subscript 2 for the products: P1*V=n1*R*T1 and P2*V=n2*R*T2. Now you divide them, cancel off the constants and you get: P2/P1=n2*T2/(n1*T1). Wikipedia tells me that if I burn hydrogen at the stoichiometric ratio with pure oxygen starting at 20 C and a pressure of P1=1 bar I'll, get a flame at 3200 C (look for adiabatic flame temperature). So this is an increase in temperature by 3180 K. Also, you go from 3 moles down to two so there's: T2=3180*T1 and n2=2*n1/3. BTW, we usually talk about moles, not molecules but they are essentially the same thing since a single mol of a substance contains an amount of molecules equal to the Avogadro number, which is a constant. So now by substitution we have: P2/P1=3180*2/3.
So you see that the rise in temperature incresed the pressure by a factor of 3180 whereas the fewer amoumt of molecules in our theoretical non-expandable perfectly isolated box only led to a pressure drop by a factor of rougly 0.67.
However, at the resulting pressure of about 2120 bar (!) it's not correct to use the ideal gas equation, but you see where this is going. The temperature increase wins by a longshot in this case, and I would expect this to be so for any reasonable fuel combustion.
Trackers measure parameters like steps and calories and bring them out of context. If you ate 500 kcal worth of chocolate right before the workout, then burning 500 kcal will do little in terms of fat reduction. You don't work out to burn the fat while you exercise, you work out to change your metabolism so that you burn fat while you don't exercise. Trackers won't reward you for doing muscle training (no steps involved!) although building muscle is awesome for losing weight (give your body enough mitochondria and you'll practically lose weight while you sleep!). Trackers are a fun gadget, but of more entertainment value than anything else.
She's being ridiculed not because her lifestyle is different, but because it combines practicing a religion that is pacifist and teaches to "turn the other cheek" with the maintenance and usage of lethal weaponry.
Damned martens keep eating my car, too! A couple of months back, one ate the rubber pipe of the break assist and the battery cables. Cost about 200 euros. They are a real problem in middle Europe...
In ten years? I've had my Ford for 4 years and I've only opened the hood for adding windshield wiper fluid. The air pressure (and a bunch of other things) is checked at the dealer's where I drive it to get the tyres replaced twice a year (in November they take the summer tyres off, put them in storage and bolt on the winter tyres on, vice versa in May).
You have to adjust for Switzerland. The cost of living is so high money almost evaporates as soon as you touch them. After adjustment you would land close to your $14k.
Get Gatling guns on one ship, the next pirate crew will show up with an RPG. If I was a sailor on one of those ships, there would be no chance in frozen hell I would fire back on a pirate to protect some rich dude's shit on board that's probably insured anyway. You can be as gun-ho about this as you want from your armchair, I'm throwing my hands in the air and letting the pirates go with the cargo.
I'm afraid I have to agree. This search engine needs to receive as much publicity as possible, not get swept under the rug. Only then, I hope, will the people become aware of how orwellian the IoT really is.
Slashdot Mirror
Sounds good to me...
You mean, like Windows 10?
More power, more better.
I think banning internal combustion engines is a good idea. I would love to see external combustion engines catch up.
Give each a unique ID so that one can bookmark them and even add their favorite option into their own tool-bar and/or menu as they choose.
Do you want SAP? Because that's how you get SAP.
Yes, convection is crappy because radiation heating produces a much better warmth. I've had both air-conditioning heating and radiator heating in my appartment. The hot air that the AC produces does nothing to warm your feet, rises to the top and is not as comfortable as the radiator. However, as others have noted, this might be working using liquid cooling, which is not what I had in mind when I wrote the first comment. If you get the heat from the CPU directly into some liquid, you could use it for underfloor heating, which is awesome.
Because this business model is not well though-of. Internet informs me that AMD Ryzen 7 PRO 1700X consumes 95 W of power, much like an old-school light-bulb. Crappy oil radiators seem to start at 600 W (about 6 CPUs) and better ones have a power consumption of up to 2500 W (26 CPUs). Having used such radiators myself, I would definitely go with the bigger one. Other points of interest are the surface area, the surface temperature and the heat transfer mechanism that are different between a 2500 W oil radiator and a 26 CPU rack. Even if the CPUs reach a rather elevated temperature (1700X maxes out at 95 C), the surface temperature of the rack is only going to be luke warm, so you're not going to get any heat radiated to you. The heat is going to reach you by convection via the fans, which is a crappy way to warm yourself up. Then you would need a full rack at least in every other room to heat up a whole home, which will take up a lot of space.
If you're going to run a data center, the only thing this will save is the real-estate space. The costs of installation, transportation etc, however, are going to eat away most of the savings in my opinion. I suppose, of course, that Qarnot will be paying for the electricity. If not, then they are just looking for chumps that would be better off switching back to incadescent light bulbs.
This year's books:
1. Werner Munter 3x3 Lawinen (in German). A book on estimating the probability of an avalanche and how to reduce the avalanche risk while skiing)
2. Yanis Varoufakis, And the weak suffer what they must? (in English). A book on the recent/ongoing European economic crisis. Very eye-opening. It strengthened my pessimism on the topic, although the book itself ends in a rather optimistic tone. It confirmed my suspicion that the former greek finance minister was more of an academic and less of a competent politician.
3. Charles Bukowski, Post office. Finished it in a day. There are very few books that can be read so easily and be so multy faceted and insightful at the same time.
I would be inclined to vote for Post Office, but the book on avalanches is already proving itself quite useful...
A lot of people are rooting for Legos and I don't really disagree, but my personal experience as a kid was waaaaay better with Meccano. The box had a booklet with instructions for various stuff, but at the end it had an "advanced" category where each model was only shown using three pictures. You had to figure out the rest yourself. It was awesome.
OK, just tell them afterwards that you did it because you love them.
OMG, I made a terrible mistake. That'll teach me to post such things late at night with a low blood sugar...
For the temperature, of course, you need the increase factor, not the difference! So there is T1=20 C=293 K and T2=3200 C=3473 K. So now properly we get T2=3473*T1/293=>T2=12*T1 (approximately).
So there you have it: Factor 12 pressure increase from the temperature and factor 0.67 pressure decrease from the molecule change. The temperature still wins.
Sorry about the confusion.
You need an equation of state. Let's assume that we're dealind with ideal gas mixture so we get: P*V=n*R*T. R is a constant and since you ask about the pressure, I'll assume that you keep the volume constant, so V is also a constant. Now you need to write the equation down for the before/after case, say with subscript 1 for the reactants and with subscript 2 for the products:
P1*V=n1*R*T1 and P2*V=n2*R*T2. Now you divide them, cancel off the constants and you get: P2/P1=n2*T2/(n1*T1). Wikipedia tells me that if I burn hydrogen at the stoichiometric ratio with pure oxygen starting at 20 C and a pressure of P1=1 bar I'll, get a flame at 3200 C (look for adiabatic flame temperature). So this is an increase in temperature by 3180 K. Also, you go from 3 moles down to two so there's: T2=3180*T1 and n2=2*n1/3. BTW, we usually talk about moles, not molecules but they are essentially the same thing since a single mol of a substance contains an amount of molecules equal to the Avogadro number, which is a constant. So now by substitution we have: P2/P1=3180*2/3.
So you see that the rise in temperature incresed the pressure by a factor of 3180 whereas the fewer amoumt of molecules in our theoretical non-expandable perfectly isolated box only led to a pressure drop by a factor of rougly 0.67.
However, at the resulting pressure of about 2120 bar (!) it's not correct to use the ideal gas equation, but you see where this is going. The temperature increase wins by a longshot in this case, and I would expect this to be so for any reasonable fuel combustion.
They didn't embrace shit. They were dragged by the hair, screaming and kicking, into the internet era.
Trackers measure parameters like steps and calories and bring them out of context. If you ate 500 kcal worth of chocolate right before the workout, then burning 500 kcal will do little in terms of fat reduction. You don't work out to burn the fat while you exercise, you work out to change your metabolism so that you burn fat while you don't exercise. Trackers won't reward you for doing muscle training (no steps involved!) although building muscle is awesome for losing weight (give your body enough mitochondria and you'll practically lose weight while you sleep!). Trackers are a fun gadget, but of more entertainment value than anything else.
Momentum is maintained anyway, so that's easy. Maybe they need to do something to maintain speed, but they don't have to worry about momentum.
She's being ridiculed not because her lifestyle is different, but because it combines practicing a religion that is pacifist and teaches to "turn the other cheek" with the maintenance and usage of lethal weaponry.
The Jedi and the Sith don't have any special powers in their blood. Midichlorians, you say? Sorry I can't hear you, LA LA LA LA LA LA LA...
It's all about money, man.
You think you're free?
Try going somewhere without money.
Bill Hicks
Damned martens keep eating my car, too! A couple of months back, one ate the rubber pipe of the break assist and the battery cables. Cost about 200 euros. They are a real problem in middle Europe...
In ten years? I've had my Ford for 4 years and I've only opened the hood for adding windshield wiper fluid. The air pressure (and a bunch of other things) is checked at the dealer's where I drive it to get the tyres replaced twice a year (in November they take the summer tyres off, put them in storage and bolt on the winter tyres on, vice versa in May).
You have to adjust for Switzerland. The cost of living is so high money almost evaporates as soon as you touch them. After adjustment you would land close to your $14k.
Get Gatling guns on one ship, the next pirate crew will show up with an RPG. If I was a sailor on one of those ships, there would be no chance in frozen hell I would fire back on a pirate to protect some rich dude's shit on board that's probably insured anyway. You can be as gun-ho about this as you want from your armchair, I'm throwing my hands in the air and letting the pirates go with the cargo.
Good idea. The disagree mod should then be positive. In this way, the controversial (but not trolling) comments will be upvoted for discussion.
I'm afraid I have to agree. This search engine needs to receive as much publicity as possible, not get swept under the rug. Only then, I hope, will the people become aware of how orwellian the IoT really is.
For the record, hydroelectric plants come at the bottom of the hills, not on top.