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1948 Mayor To MIT: Use Flamethrowers To Melt Snow?

An anonymous reader writes "In 1948 Boston mayor James Curley freaked out because of the record amounts of snow. He wrote to MIT and begged for help, even suggested using flamethrowers to melt it. (Check out the original type-written letter.)"

203 comments

  1. I've been saying this all week by Missing.Matter · · Score: 2

    I'd like to head out there and just use some brush burners to get rid of the snow on my driveway.

    1. Re:I've been saying this all week by tinkerghost · · Score: 2

      I have 6' drifts on either side of my driveway - I have no problems with a couple of gallons of napalm to clear them.

    2. Re:I've been saying this all week by __aasehi2499 · · Score: 2

      I've done it, it's not very effective, cold concrete covered in ice and snow, talk about a heat sink.

    3. Re:I've been saying this all week by SniperJoe · · Score: 3, Funny

      You could always use the Mythbusters adage. "When in doubt, C4."

    4. Re:I've been saying this all week by fuzzyfuzzyfungus · · Score: 1

      It certainly works; but the enthalpy of fusion of water is damn high. Useful when icing drinks; but means that you'll need a great deal of energy to turn even just-below-freezing snow into just-above-freezing water.

      Using jet engines mounted on vehicles as combination snow blowers/melters has been done(those crazy ruskies...); but fighter engines aren't exactly known for their fuel economy.

      For the suitably well-heeled, thermostatically controlled resistive heaters, cast into concrete or buried under asphalt, are available that will keep the pavement snow and ice free; but the electricity required to manage that isn't cheap.

    5. Re:I've been saying this all week by blair1q · · Score: 2

      Concrete is actually a pretty good insulator. It's the Heat of Fusion that's screwing you over. Imagine dumping your entire tank of liquid propane across the sidewalk and lighting it on fire. It'd burn for a couple of minutes and make the ice slick, but certainly not melt it all.

      Salt is really the quickest means of disposing of frozen water. And it's pretty energy-efficient. It just doesn't do the environment much good.

    6. Re:I've been saying this all week by Mister+Whirly · · Score: 1

      I believe this is what you want - the Snow Dragon. As a side benefit, it takes the contaminants out of the snow so the water runoff can go directly into the sewers. The water is actually cleaner than when it was snow! The city of Minneapolis just bought some of these, but they are still far to small to melt serious volumes of snow. They are mostly being used downtown or in parking lots as an alternative to hauling the snow away in dump trucks.

      --
      "But this one goes to 11!"
    7. Re:I've been saying this all week by Anonymous Coward · · Score: 0

      Propane brush burners are impressive, the latent heat of fusion is moreso.

      I predict you would spend a very long time and a lot of propane to melt a driveway with a brushburner.

    8. Re:I've been saying this all week by Intron · · Score: 1

      We must have ruskies working for the MBTA then.

      Snowzilla has been in use for years.

      --
      Intron: the portion of DNA which expresses nothing useful.
    9. Re:I've been saying this all week by DarwinSurvivor · · Score: 1

      Not that a tank of propane dumped and lit would be much better for the environment...

    10. Re:I've been saying this all week by DarwinSurvivor · · Score: 1

      Hmm, I wonder if there are any local data centers that need some "cooling"...

    11. Re:I've been saying this all week by rtb61 · · Score: 1

      Well depending upon the cost of snow removal and lost productivity due to the number of snow days. Perhaps large precast concrete box culverts to cover all public roads might be the solution (cover with solar panels to pay for maintenance costs). Leave the snow up out of the way and continue to use the road. Of course aligning entry points (driveways) is likely to be a real hassle but a one time truly enormous cost versus an annual high cost.

      Lateral thinking applied, you could retrieve a substantial portion of the cost by selling the airspace above the roads as building space. Say six metres clear and then multi story beyond for construction.

      --
      Chaos - everything, everywhere, everywhen
    12. Re:I've been saying this all week by patiodragon · · Score: 1

      Concrete is great at STORING heat. It is slow to change temperature, like water.

      It actually kinda sucks as an insulator (pun intended)

      http://www.coloradoenergy.org/procorner/stuff/r-values.htm

    13. Re:I've been saying this all week by Meski · · Score: 1

      I love the smell of napalm in my drive, it makes me think of commuting.

    14. Re:I've been saying this all week by mcrbids · · Score: 1

      I've long wondered why they don't run pipes through "must be clear" cement (think: International airport) and then pump water through the pipes. The water would come from the water table 25' down, where it's always around 60' year 'round, and so shouldn't cost terribly much.

      IMHO, as an armchair engineer lacking credentials for much more than software...

      --
      I have no problem with your religion until you decide it's reason to deprive others of the truth.
    15. Re:I've been saying this all week by tragedy · · Score: 1

      I did some math on this for my own driveway, which is about 30 square meters. I had a lot of fun with the impossible layer of ice on it yesterday and today. There's nothing like getting home after an 18 hour day of frantic work and getting stuck halfway onto the street and having to spend hours trying to clear things enough to get the car to move. Not to mention that something seems to have happened to my transmission during the ordeal. Keeping the driveway clear would be the best thing, but I just haven't had any time to do it, or even think about it lately. I'm thinking, for a future project, that ripping up the driveway, then putting in a driveway heating system would be a good idea.

      I took the figure for the most snowfall ever in my state, 2.73 meters and the figure for the coldest day on record -38 Celsius. So that's about 82 cubic meters of snow for the whole winter on that 30 square meter driveway, which works out to about 8.2 cubic meters (I found figures saying 12 to 1 snow to water volume and settled on using 10 to 1) of water, which is about 8,200 kilograms of water (maybe a bit more at that temperature. At 4.184 kilojoules per degree Celsius per kilogram, that's 34,308.8 kilojoules for each degree Celsius. Starting at -38 degrees Celsius, it takes 1,303,734.4 kilojoules to heat the ice up to 0 degrees Celsius. Then you have to consider enthalpy of fusion, so it takes another 333.5 kilojoules per kilogram to actually melt the ice. So, that's 2,734,700 kilojoules to actually melt the ice, which is more than it took to raise it the 38 degrees. Obviously, the starting and ending temperatures matter, but clearly there isn't going to be as big a difference as you might expect on a mild day vs. a cold one. So then we might as well raise the temperature to a comfortable 27 degrees, which is a further 926,337.6 kilojoules. So, in the worst imaginable winter, my driveway would take 4,964,772 kilojoules of heat to keep clear.

      That's about 1379 kilowatt hours. At $0.12 per kilowatt hour, that's about $166 for the whole winter. Efficiency losses wouldn't be that high low, since we're talking about heating here. Electric heating elements under the surface of the driveway would end up sending nearly all that energy as heat upwards. Even though, as you point out, the concrete (asphalt in the case of my driveway, but if I redid the driveway I'd probably go with concrete) is going to store heat well and you'd have to heat it for a while. However, once the ice and snow starts to melt above it, it's going to do an excellent job of absorbing that heat right back out. It will change my numbers, but I don't think by any significant degree. The real challenge is going to be figuring out where to stop applying heat because the concrete will act as a buffer and keep melting ice and snow for you for a while after you stop. I imagine temperature sensors would be able to work it out. Still, obviously it varies depending on how much snowfall you actually get. Obviously this is going to be vastly less efficient if you get a coating of ice every day rather than a smaller number of bigger snowfalls.

      As a comparison, at around 121,000 kilojoules per gallon of gas, that's about 41 gallons, or about $135. For diesel/home heating oil, there's around 156,000 kilojoules in a gallon, so that's about 32 gallons of home heating oil, which comes out to about $106. At 105,506 kilojoules in a therm, that's about 47 therms of natural gas. My gas company charges about $0.81 per therm, so that's about $38 in natural gas. (As an aside, I've done the home heating oil vs natural gas comparison before and there's such a huge gap in price per unit of energy. Why then does anyone who has gas available even use home heating oil? Is there some huge difference in converting the energy to heat that I'm missing?) However, I don't think anyone makes a system to burn those fuels directly under a driveway, so you'd need to hook up a furnace in the house to water pipes running under the driveway. On the other hand, that's probably a false loss, sin

    16. Re:I've been saying this all week by blair1q · · Score: 1

      Whoa. I did not know that about poured concrete. 0.08? Is that even possible? Explains the popularity of cinderblock...

    17. Re:I've been saying this all week by cynyr · · Score: 1

      I would use gas heat, and a warm/hot water glycol loop. These sorts of systems are commercially available. I'm not sure if they are for a home sized installation. Many hospitals have snow melters on the ambulance entrance, and other critical areas.The controls end is likely to be available as a package as well.

      The question i have is what happens to the snow once you have turned it into water? does it evaporate, or does it run into the street and make that a sheet of ice.

      --
      All of the above was encrypted with a Quad ROT-13 method. Unauthorized decryption is in violation of the DMCA.
    18. Re:I've been saying this all week by cynyr · · Score: 1

      They do do this, just not for airports. the size is too large for it to work well, as you also end up heating the ground some as well. Hospitals have these sorts of systems.

      I'm not sure they are cost effective over other methods unless you have a pile of waste heat to get rid of. Also what happens to the water from the melted snow?

      --
      All of the above was encrypted with a Quad ROT-13 method. Unauthorized decryption is in violation of the DMCA.
    19. Re:I've been saying this all week by tragedy · · Score: 1

      Replying to this a bit late, as usual. I thought about the drainage issue. Mentioned it in my last paragraph, but had no particular solution. I'm assuming that I'd need to have a sloping barrier around three sides of the driveway with a gutte just inside that, and a drain covering the entire bottom of the driveway. Where that would drain to, I'm not 100% sure. Whether or not that's allowed to go into my cities sewer system I don't know. There are some other possibilities. I could always set up a spout and build an ice tower in my back yard. Or just dump it back there perhaps, although that still has risks of running off into the street. Maybe get one of those soft-sided above ground pools and use it as a storage tank then. I just checked and apparently you can leave them full outside all winter. It's only about 3000 gallons of water so it wouldn't really be all that much. Some would probably evaporate as well.

  2. My Theoretical Response by The+MAZZTer · · Score: 0

    Dear Mayor Curley,

    Thank you for writing us. Our engineers are hard at work on a brand new invention called THE SUN that will shortly eliminate all the snow in Boston, and indeed the entire state of Massachusetts. We also have our physicists at work on a little something called the LAWS OF THERMODYNAMICS that will ensure that the snow melts slowly enough not to cause a flood; as opposed to all the snow melting simultaneously.

    1. Re:My Theoretical Response by Wyatt+Earp · · Score: 2, Informative

      The Sun is ineffective at melting the snow.

      Higher air temperatures melt the snow.

      If you've ever lived somewhere that gets snow cover and then arctic high pressure fronts you'd know that snow and clear sunny days equal record low temperatures.

    2. Re:My Theoretical Response by v1 · · Score: 4, Insightful

      The reason sun doesn't melt snow too fast is it's white. Sprinkle a little black ash on it and watch it just sink. Dirty snow always melts faster.

      They could just be sprinkling ash around on the snowbanks and huge snowpiles to get things melting faster. Such a simple idea, I don't know why they're not doing it. Ash isn't too environmentally unfriendly... certainly better than all the salt they're using.

      --
      I work for the Department of Redundancy Department.
    3. Re:My Theoretical Response by eln · · Score: 1

      If you read the letter, the mayor's primary concern at the time was that the accumulation from the snow piling up all winter and not melting until spring would cause massive flooding when the temperature did finally rise enough to melt it all. So, the solution he was looking for was something that would melt the snow gradually during the winter rather than having to wait for it to all melt at once in the spring.

      Given the fact that they're facing similar problems today, we can conclude that MIT failed to come up with anything useful in response to the mayor's query. It would be nice to know what their response was, if they responded at all.

    4. Re:My Theoretical Response by yurtinus · · Score: 2

      But it's DIRTY and I don't want it in my neighborhood! That's why I just pour my automotive antifreeze on my driveway. Clean and good-smelling!

      --
      +1 Disagree
    5. Re:My Theoretical Response by wjousts · · Score: 2

      My south facing house gets plenty of sun and the snow on my lawn melts even without the temperature getting very high. My neighbors house across the street (north facing) doesn't.

    6. Re:My Theoretical Response by Culture20 · · Score: 3, Funny

      And it clears up the pesky stray pet population.

    7. Re:My Theoretical Response by Anonymous Coward · · Score: 0

      The Sun is ineffective at melting the snow.

      Higher air temperatures melt the snow.

      In other news; The Sun is ineffective at providing light.

      Photons provide the illumination.

    8. Re:My Theoretical Response by mangu · · Score: 1

      Ash isn't too environmentally unfriendly

      That depends on how much ash is used.

    9. Re:My Theoretical Response by Wyatt+Earp · · Score: 1

      No, warm air currents provide the heat, often from the ocean or large bodies of water.

    10. Re:My Theoretical Response by maxume · · Score: 1

      The air temperature is key for melting snow, but warm air does get warm for a reason.

      (even on those record low days you talk about, ever notice the wider swing between day and night temperatures?)

      --
      Nerd rage is the funniest rage.
    11. Re:My Theoretical Response by v1 · · Score: 1

      I was referring to ash from burning, which is quite a bit different than "coal ash". Isn't coal ash a petroleum compound? fire ash is mostly just carbon.

      --
      I work for the Department of Redundancy Department.
    12. Re:My Theoretical Response by shadowfaxcrx · · Score: 1

      And. . What warmed the air currents?

      --
      "I disagree with you" does not equal "flamebait."
    13. Re:My Theoretical Response by Anonymous Coward · · Score: 0

      "often from the ocean or large bodies of water"

    14. Re:My Theoretical Response by Wyatt+Earp · · Score: 1

      The sea, land, the Great Lakes, Great Salt Lake, the Caspian Sea, currents whatever local and regional geography is moving air and water around.

      Look at where I live, Anchorage Alaska. See in the winter for a long period of time we really don't get much Sun to speak of, when it is out it's really low in the sky and dim. Because of the ocean being so close and our having bodies of brackish water on two sides we have pretty mild winters, 12-31-10 was 34 for a high with a low of 28. Inland just 120 miles away on the same day, with the same amount of sunlight it was 19 for a high and -2 for a low.

      So what was the difference? Not the Sun, the ocean.

      Yea, ultimately 99.999% of the heat in the Solar System comes form the Sun, however air masses and ocean currents are independent from day to day solar radiation.

      If one wanted to they could blame rising CO2 levels on the Sun. Since 600 million years ago the Sun was out and made the plants grow and then they died and turned into coal and oil and then we pulled that out of the ground and burned it.

      Its the Sun's goddamned fault.

    15. Re:My Theoretical Response by fuzzyfuzzyfungus · · Score: 2

      Coal ash is the residue from burning coal. Were coal actually just chunks of carbon, it would be largely inoffensive(and a gas). Trouble is, coal tends to contain a number of interesting trace elements, sulfur, heavy metals, and similar fun. Thus, in quantity, the stuff left over that either doesn't burn, or burns into a solid compound of some kind, can kill its way quite merrily through a watershed.

      Other than posing some dust irritant/inhalation hazard when airborne, reasonably pure carbon black could be sprinkled on top of snow to accelerate its melting without serious issues...

    16. Re:My Theoretical Response by Deadstick · · Score: 1

      Yes, and the reason is that most of the heat delivered by the sun goes into heating the ground, which heats the air next to it by conduction. Some solar energy gets absorbed by the atmosphere as it passes through, but not much.

      When the ground is covered in snow, most of that solar energy gets reflected right back into space and fails to heat the ground.

      A flame thrower would indeed melt snow, but at great expense. You're transferring heat across a large temperature differential, which is one of the classic ways to throw away energy: it creates lots of entropy, little USEFUL heat addition. You do melt some snow -- and then you spend loads of energy turning that liquid water into steam, as well as heating the surrounding air which immediately rises away from the ground because it's buoyant.

      You're better off to use something just a LITTLE warmer than snow -- you transfer heat across a small temperature differential and come much closer to a thermodynamically reversible process. Some steam locomotives used to be fitted with multiple steam jets on the front that could be used to clear tracks by a combination of blowing and melting.

      rj

    17. Re:My Theoretical Response by jschen · · Score: 1

      The laws of thermodynamics tell us whether the snow will melt, but not how quickly it will melt. The rate is dictated by kinetics, not thermodynamics.

    18. Re:My Theoretical Response by aix+tom · · Score: 1

      And... what warmed the oceans?

    19. Re:My Theoretical Response by cynyr · · Score: 1

      But where does the energy in the oceans come from?

      mostly the sun.

      --
      All of the above was encrypted with a Quad ROT-13 method. Unauthorized decryption is in violation of the DMCA.
  3. Unreasonable Use of Force by sammysheep · · Score: 1

    That's like trying to use a frickin' flamethrower to melt snow....oh wait. :D

  4. use steam! by yincrash · · Score: 2

    don't cities like this have steam plants with steam pipes through significant portions of the city? divert some steam to melt some snow

    1. Re:use steam! by Xphile101361 · · Score: 2

      Holland, MI actually does do this. They use the steam pipes to heat the sidewalks and streets of their downtown area.

    2. Re:use steam! by Vegeta99 · · Score: 1

      Penn State also was pretty good about having the steam pipes follow walking pathways/sidewalks. Every once in a while, there'd be a grate in the sidewalk pouring out heat. Pretty cool when you're too broke to buy proper winter clothes...

    3. Re:use steam! by onepoint · · Score: 2

      When I lived in NJ, I install a solar water heating system on the roof of the home, I had it build during the summer when I was rebuilding my home, slight a bit OVER-SIZED and it worked well. One trick that I added to the system was simple, I had an engineer figure out how to plumb the stairs, sidewalk, driveway and used the solar heated water to warm things a bit.

      Well it worked rather well, all I had to do was to flick a switch in the morning, the sidewalk would get a slightly warmer, when the snow fell it would melt, my only cost was the pumping. add the sun the next day and it was better. What I loved about it was that even if I did have to shovel, the next day it would be perfect and dry. What I hated was all those people always stomping down to clean there boots on my dry patch.

      I would like to mention, that the solar water heater paid off over a very long period of time, due to my build size. but I think that it also saved my back and reduced the liability of slips and falls.

      For my next home I want solar sterling engine mounted on the roof ( I now live in Florida, where the cost of fuels seems very high ), that will reduce my cost.

      --
      if you see me, smile and say hello.
    4. Re:use steam! by Anonymous Coward · · Score: 0

      My father used to talk about how you could trace the line of the underground steam pipes because there wasn't any snow over them.

    5. Re:use steam! by M.+Baranczak · · Score: 1

      Didn't you have any problems dealing with the melt water? I would think that the water would just re-freeze when it runs off the heated part.

    6. Re:use steam! by onepoint · · Score: 1

      No, not a drop, it did not melt that fast, and it just would run into the grass. I think most of it evaporated during the next day while the sun was out.

      it was just a helper to a problem, I still had to shovel if I get 5 or 6 inches of snow or I forgot to turn on the switch. but turning it on if I thought there was a storm coming and then going to work and coming back to a clean driveway, that's a pleasure.

      --
      if you see me, smile and say hello.
  5. Dumping snow in the river by ChairmanMeow · · Score: 3, Insightful

    When the snow melts, the contaminants are going to go into the river anyway, so why does it make sense to ban dumping the snow in the river?

    Anyway, in my thermodynamics class back in college, one problem we were given was to calculate how much energy it would take to melt all the snow across the campus. The thermodynamics does not work to the advantage of economically getting rid of the snow using flamethrowers.

    --
    1. Re:Dumping snow in the river by AvitarX · · Score: 1

      In my city when the snow piles melt massive amounts of filth, trash, and plastic bags are revealed.

      The street sweepers get some of them, as do the garbage men.

      --
      Wow, sent an e-mail as suggested when clicking on "use classic" banner, and got a fast response that addressed my msg
    2. Re:Dumping snow in the river by Anonymous Coward · · Score: 0

      Probably has more to do with the water level and potential ice build up than pollutants, since you are correct in that anything through a storm drain will end up in the water.

      Although, any solids in the snow are left behind when it melts ( assuming it isn't water soluble ), to be caught in the sump of the storm drains or on the streets - if you dumped these things directly in the river it could be bad.

    3. Re:Dumping snow in the river by Attila+Dimedici · · Score: 3, Informative

      A couple of years ago, a major city near me started to do that. They had to stop because it was causing flooding. The sudden addition of snow from all around the city raised water levels in the river to the point that it was starting to overflow its banks. Additionally, because the snow was frozen, it caused the river the freeze up in such a way as to slow its flow, causing flooding of communities upriver from the city.

      --
      The truth is that all men having power ought to be mistrusted. James Madison
    4. Re:Dumping snow in the river by Anonymous Coward · · Score: 0

      Dumping snow in river may build an ice dam => flooding.

    5. Re:Dumping snow in the river by Peeteriz · · Score: 1

      In most cities, when the snow on streets/sidewalks melts, the water and contaminants don't go into the river, but go into sewage where it's filtered and otherwise treated before reaching the river.

    6. Re:Dumping snow in the river by shoehornjob · · Score: 1

      Economic advantage my ass. Flamethrowes are fun and that's all. Of course the downside of melting your 6' snow drifts with a flamethrower is a bunch of water which is just going to freeze anyway. I prefer to use the flamethrower mounted on my gun when I play Black Ops. It's much more fun that way. Just don't get me started on those damn Napalm strikes.

      --
      "We are just a war away from Amerikastan. When god vs god the undoing of man." Dave Mustaine
    7. Re:Dumping snow in the river by DarkVader · · Score: 1

      Actually, in most cities the storm drains aren't connected to the sewage system, they're separate pipes that usually drain unfiltered to a nearby body of water like a river.

    8. Re:Dumping snow in the river by danbert8 · · Score: 1

      Boston is a fairly old city and likely still has a combined sewer system. That being said, the main advantage is the vast majority of melted snow is absorbed into the ground instead of turning to runoff. If you throw it in the river, it all contributes to runoff. In addition, much of the snow melt gets filtered through the ground or through the sewer system itself even if it doesn't get treated.

      --
      Yes it's an anecdote! Were you expecting original research in a Slashdot comment?
    9. Re:Dumping snow in the river by arth1 · · Score: 1

      When the snow melts, the contaminants are going to go into the river anyway, so why does it make sense to ban dumping the snow in the river?

      Imagine you're a fish in that river, then ask yourself whether you'd rather want a few weeks of melt-water filtered through the ground seeping into the river, or tonnes of snow dumped on top of you.

      From a more human point of view, there's also the possibility of snow causing blockage. If the river is cold, the snow won't melt immediately, and can cause ice floes.

    10. Re:Dumping snow in the river by suomynonAyletamitlU · · Score: 1

      In my thermodynamics class back in college, one problem we were given was to calculate how much energy it would take to melt all the snow across the campus.

      One of the things that always boggles me about winter is that there is no addition of cold in any meaningful way, negative thermal energy not really existing; the world (well, hemisphere) gets substantially colder because it continues losing heat at the same rate it does in summer, but now it's not being replaced by the sun. All of those huge waves of warm and cold air that we live or die by are inefficiencies in heat getting from the ground (or anywhere else it's absorbed) to space.

      Makes the world, and humanity, seem so much more fragile when you look at it that way.

    11. Re:Dumping snow in the river by Anonymous Coward · · Score: 0

      I recall that the city Harrisburg, PA, did this a number of years ago. The local news showed dump trucks dumping snow off the side of a bridge into the Susquehanna River. A few days later parts of the snow mound broke free and floated down the river, taking out another bridge down stream.

    12. Re:Dumping snow in the river by Y-Crate · · Score: 1

      While the desire to keep pollutants out of the waterways is a noble one, storm drains in Boston empty directly into the harbor, or Charles River (which empties into the harbor). The drains are even labeled with warnings about this.

      The whole "we don't want to pollute the harbor" line people hear from the city every winter makes sense until you realize that the pollutant-filled runoff is going to end up in the harbor anyway.

    13. Re:Dumping snow in the river by Anonymous Coward · · Score: 0

      The thermodynamics does not work to the advantage of economically getting rid of the snow using flamethrowers.

      That is as compelling an argument as saying that sex has little value because there are more efficient methods for burning calories. Anyone suggesting the use of a flamethrower to remove snow has snow removal as (at the very highest) their second priority; the first being to use a flamethrower.

    14. Re:Dumping snow in the river by Anonymous Coward · · Score: 0

      For the most part your right. But there are a few notable exceptions. I believe Chicago runs a "combined" system (both sewage & rainwater). But its far from a desirable system. Chicago has a pretty massive sewage system but even it can't handle the flows during major storms, so they have an extra long "waste pipe" going out a few miles into Lake Michigan. When their system is overwhelmed, the dump the sewage/rainwater mix straight into the Lake(s). Yum

    15. Re:Dumping snow in the river by pclminion · · Score: 1

      Assuming a density of 80 grams per liter (about 8% that of water), a cubic meter of snow has a mass of 80 kg. Heat of fusion of water ice is 333.55 kJ/kg, so it would take a minimum of 27 MJ to melt one cubic meter of snow (more, if it is substantially below freezing). Assuming a 10 hectare campus, and a depth of 1 meter, that's 100,000 cubic meters of snow requiring 2,700,000 MJ of energy to melt, which is 2.7 TJ which is about the amount of energy produced by a 1 gigawatt power plant in a time of 45 minutes... It's a ridiculously huge amount of energy.

    16. Re:Dumping snow in the river by AFCArchvile · · Score: 1

      Many grates in Boston say "Don't Dump; drains to Charles River" or "Don't Dump; drains to Boston Harbor". So those waterways are going to see lots of salty meltwater anyway.

      --
      "Ancillary does not mean you get to rule the world." --U.S. Circuit Judge Harry Edwards, speaking to the FCC's lawyer
    17. Re:Dumping snow in the river by Anonymous Coward · · Score: 0

      Your city has open sanitary sewers? Interesting. Storm sewers don't get treated in my city. Or, for that matter, any city within 500 miles of here.

  6. CT Homes have 4-5ft deep piles. by thebiss · · Score: 1

    I'm not sure what we will do if another 12" falls.

    Although gasoline and flamethrowers would just lead to fires, I've wondered what a 100K BTU industrial propane heater would do. (Picture below.) Has anyone tried this?

    http://www.globalindustrial.com/p/hvac/heaters/kerosene-propane/propane-heater-forced-air-50000-btu?utm_source=nextag&utm_medium=shp&utm_campaign=Propane-Kerosene-nextag&utm_term=245995&infoParam.campaignId=WI

    --
    Beware: I believe all are created equal, and have the right to life, liberty, and the pursuit of happiness.
    1. Re:CT Homes have 4-5ft deep piles. by alta · · Score: 1

      Unless you get out there and start pointing this thing all over the place, it'll melt a nice straight line somewhere.

      And, you said 100k, but this is 50k. Was there a 100k model somewhere?

      Now if there was an oscillating version!

      --
      Do not meddle in the affairs of sysadmins, for they are subtle, and quick to anger.
    2. Re:CT Homes have 4-5ft deep piles. by Temkin · · Score: 2

      Simple... The snow melts, the water flows a few feet out of the path of the heater, and freezes solid, exposing you to potential liability if someone slips and breaks their hip.

         

    3. Re:CT Homes have 4-5ft deep piles. by MozeeToby · · Score: 4, Informative

      CT Homes have 4-5ft deep piles.

      I'm not sure what we will do if another 12" falls.

      As someone who grew up in an area that managed not to call 2 feet of snow a national emergency (which is about all it takes to create 5' piles), you take the new snow and throw it on top of the pile. Or, if necessary, you make the base of the pile bigger. If really and absolutely necessary, you pile the new snow into a sled and pull the sled into the middle of the lawn and dump it there. Sometimes the answer to a difficult problem really is just to work a bit harder. Sad but true.

    4. Re:CT Homes have 4-5ft deep piles. by inpher · · Score: 1

      I am not sure this would be much faster than a good shovel while also costing much more (to buy and use) while at the same time risking icing the driveway. Also, using a shovel will give you a little extra exercise. With one of these I can do a good sized driveway in fifteen minutes with <40 cm snow, about half an hour with <60 cm snow.

    5. Re:CT Homes have 4-5ft deep piles. by mspohr · · Score: 1
      I've lived in the Sierras for the past 30 years and every winter we get more than 20 ft of snow. This year we had 18' in Nov and Dec (but January has been dry and sunny). I currently have about 3' in the yard and piles over 6' near the driveway and road.

      How do we deal with snow that is regularly more than the "snowpocalypse" currently in rest of the country? We have "snow plows" and "snow blowers". You may have heard of them. They push the snow out of the way and pile it up out of the way. It all melts in the spring. No panic. Stop whinging. Go skiing.

      --
      I don't read your sig. Why are you reading mine?
    6. Re:CT Homes have 4-5ft deep piles. by Nikker · · Score: 1

      Ask and ye shall receive 750,000BTU

      --
      A loop, by its nature, continues. If that didn't make sense, start reading this sentence again.
    7. Re:CT Homes have 4-5ft deep piles. by carcomp · · Score: 1

      It wouldn't exactly get rid of the snow, and I don't know how loud it is, but check out this thing. Its for clearing tracks. http://www.youtube.com/watch?v=frBh5vO_2g0

    8. Re:CT Homes have 4-5ft deep piles. by Sponge+Bath · · Score: 1

      "...if someone slips and breaks their hip."

      Use the flame thrower on them before they sue. With a broken hip, it's not like they can run away.

    9. Re:CT Homes have 4-5ft deep piles. by blair1q · · Score: 1

      100k BTU/Hour = 105400000 Joule/hour
      105400000 Joule/hour / 333550 Joule/kg = 316 kg/hour

      316 kg/hour * 1.04 liter/kg = 0.33 m^3/hour

      assume a uniform thickness of 0.25 cm for the ice and a width of 3 m for the sidewalk; that's 0.0075 m^3 of ice per meter of length.

      0.33 m^3/hour / 0.0075 m^3/m = 43.8 m/hour.

      That heater would take an hour to clear a tenth of an inch of ice from in front of one building.

      New snow has a density typically about 10% that of water, so a tenth of an inch of ice would be about one inch of snow.

      After a two-foot snowstorm, your 100k-BTU heater would take an hour to clear a half-meter wide path from your front steps to the street.

    10. Re:CT Homes have 4-5ft deep piles. by Anonymous Coward · · Score: 0

      We're talking about 100K BTU propane heater, not a flamethrower.

      The obvious answer is to BBQ them and stop buying meat for a month or so.

    11. Re:CT Homes have 4-5ft deep piles. by treeves · · Score: 1

      OT: I've noticed a lot of people using this word "whinging" lately. Is it an intentional misspelling of "whining"? Why is it so popular?

      --
      ...the future crusty old bastards are already drinking the Kool-Aid.
    12. Re:CT Homes have 4-5ft deep piles. by jbengt · · Score: 1

      I've wondered what a 100K BTU industrial propane heater would do.

      The water equivalent of the recent snow in Chicago was reported to be 1.5"+/-, that's about 7.8 lbs / sq ft.
      It takes about 144 btus to melt a pound of snow, if you assume 32F ice and 32F water.(the current temprature is about 20F and you need more than 32F water to keep it melted, but I'll ignore that.)
      So, if I did my math correctly, you would clear only about 90 sq ft per hour with a 100,000 buth heater. (It's btu/hr, not btu. Sorry for the pedantry, but it bugs me when people drop the "h")
      That's not very effective, yet Mayor Daley did say that they will be using snow melting machines to supplement the dumping of snow in piles in parks, school yards, and empty lots.
      And O'Hare airport melts snow all the time. They have a snow melt system built into the runways, which helps, but can't keep up with a big storm. But that's minor compared to all the parking lots, roads, and other surfaces from which they regularly haul snow and feed it to snow melting machines. If O'Hare tried to pile the snow up all in one place, instead, they could almost open up a ski resort on it.

    13. Re:CT Homes have 4-5ft deep piles. by mspohr · · Score: 1
      Whinging...intr.v. whinged, whingÂing, whingÂes Chiefly British. To complain or protest, especially in an annoying or persistent manner. ...

      I picked this up from my Brit friends and like it better than "whining"

      --
      I don't read your sig. Why are you reading mine?
    14. Re:CT Homes have 4-5ft deep piles. by elbles · · Score: 1

      While you're absolutely right, you grew up in an area where they had to deal with this regularly enough that they *planned* for as much snow on the ground in advance. In CT, not so much, particularly in cities like New Haven, where their plan has always seemed to be move the snow off to the side, let it melt (within a few days), rinse, and repeat.There was no considering the possibility that it won't melt, that there'd be multiple feet of snow on the ground, and that there'd be no place to plow it to.

      Are things far worse than they need to be? Absolutely. But with the way things are now, in some places, it seems like all we can do is wait for spring (and hope the floods aren't too bad, hah).

    15. Re:CT Homes have 4-5ft deep piles. by Ihmhi · · Score: 1

      We've been hit pretty hard here in Northeast NJ, although not as hard as farther NE. One tip I'd like to pass on - especially to those in urban environments - is the importance of not only clearing the sewer grates but ensuring that there is a trench in the gutter for water to actually get to the grates. My city was inundated with 1-2 meter wide pools of water at every crossing to the street.

      Since you have experience with large pileups of snow, I've a question for you (or anyone who would listen). There are more than a few jackasses in my neighborhood who own big trucks and therefore feel that they are duty-bound to show off its power by hammering right over the snow piles in front of my house and making a horrible mess of things. I've resorted to putting 2x4s (painted bright orange) sticking out of the piles to prevent this, but I've actually caught one jackass trying to run right through the damn things! I'm this close to littering the snow piles with caltrops or letting the air out of tires. How do you deal with stuff like this in your community (aside from talking to the drivers if you catch them)?

  7. Call the deathray kid by Maniacal · · Score: 4, Funny

    Tell him we need a giant version, STAT.

    --
    MG
    1. Re:Call the deathray kid by pavon · · Score: 1

      But you aren't adding any more heat to the system as the sun is already hitting the snow; you are just making it warmer on one place and colder in other places. You also risk having the melted snow refreezing as ice once you move the deathray to another location. I wonder if there are inexpensive ways to change the albedo of snow, like sprinkling soot on the snow that would help in addition to salting it to lower the melting point.

    2. Re:Call the deathray kid by Maniacal · · Score: 2

      Dude. You just argued AGAINST a giant deathray.

      --
      MG
    3. Re:Call the deathray kid by tophermeyer · · Score: 1

      I wonder if there are inexpensive ways to change the albedo of snow, like sprinkling soot on the snow that would help in addition to salting it to lower the melting point.

      On a small scale, yes. My parents (living in Maine) use a woodstove to heat the house. They use the ashes to melt the ice at the base of the front steps.

      You would need a lot of ash to make a dent on a snowbank though. And that much ash is a huge mess in the springtime.

    4. Re:Call the deathray kid by Anonymous Coward · · Score: 0

      Just nuke the city from orbit. Its the only way to be sure.

    5. Re:Call the deathray kid by Anonymous Coward · · Score: 0

      Wrong on the first count, right on the second. First the second, dirty snow melts much faster, I lived in Utah and they complained about smog making the snow pack melt, because usually snow absorbs very little sunlight. For that reason, the first is inaccurate as well. Adding extra sun will melt the snow faster, and wouldn't have done much where it would have fallen unconcentrated. Even a mirror placed to shine on the driveway can help, an automated system would be awesome.

      I used to just use the hose to clear the driveway, wait till it's over 40 and will be for a while, and the water joins the rest melting in the gutters, as long as the driveway dries before it freezes, it's great.

  8. Overkill, but... by Anonymous Coward · · Score: 0

    It might seem like overkill, but really why with all of our advances in technology do we still have to deal with such simple problems? It is obvious that a major factor in our economy staying on track is based on transportation working near 100%, so why do we still get plagued so often even from weaker weather? I am guessing that some corporation doesn't feel it is yet "profitable" enough to worry about solving.

    1. Re:Overkill, but... by Lumpy · · Score: 2

      WE dont, the only reason we have these problems are cheap bastards against spending taxes.

      IT is trivial to make roadways heated to keep ice and snow buildup down. Many large corporations and rich people have this already. Problem is a bunch of idiots whine like babies if we spend tax dollars heating sidewalks and roads in the cities.

      --
      Do not look at laser with remaining good eye.
    2. Re:Overkill, but... by rubycodez · · Score: 1

      what percentage of our corporates employees really even need to be present, 25%? 15%?

    3. Re:Overkill, but... by kmdrtako · · Score: 0, Insightful

      Tell you what, I'll tell them to go ahead---- And send the bill to you.

    4. Re:Overkill, but... by mini+me · · Score: 1

      The problem was solved a long, long time ago. Modern vehicles can even be adapted to the same basic design. There is really no reason for a little snow to scare anyone.

    5. Re:Overkill, but... by Asic+Eng · · Score: 3, Interesting

      Tell you what, I'll tell them to go ahead---- And send the bill to you.

      Cute - you want a public service, but payment should be provided only by those who admit that it's necessary. Just pretending you don't need it - but happily benefiting from it - means you get to leach of other people who are more honest. Is that the idea?

    6. Re:Overkill, but... by PrimaryConsult · · Score: 1

      We actually have invented two transportation methods that are easy to keep running regardless of how much snow is falling / has fallen...
      The subway and elevated railway (el). The biggest problems are when the lines transition from elevated to underground, and any surface portions.
      An elevated line could run through most of the worst storms we've had. All of the wind that causes snow drifts that wreak havoc on roads actually clears el tracks. The open nature of the track bed on els allow for any buildup to simply fall to the street as the trains go by.
      Classic els are pretty cheap and easy to build (a simple steel framework above existing roads), and could keep our economy going in the worst of snowstorms. But they're noisy and ugly thus people don't like them.

      Bad Snowstorm in Philly from the El
      As the video progresses you can see cars struggling harder to get through and getting stuck, but the el speeds along as fast as if it were a summer day.

    7. Re:Overkill, but... by Anonymous Coward · · Score: 0

      Sounds great, I'll send you the bill for the street upkeep.

      You clueless Tea Party people dont understand taxes yet you hate them and use things that taxes paid for. Your roads are paid for with taxes. your sidewalks are paid for by taxes.

      Let me guess you want all police fired and only private security firms allowed.

      How about fire? "yes sir, I'll put it out as soon as you hand over $4900 in cash."

    8. Re:Overkill, but... by GameboyRMH · · Score: 2

      You do realize that heating up a road surface requires an ungodly amount of energy, right? That's why only rich bastards and megacorporations can afford such things. To say such astronomical costs could be covered by taxes is like saying we could all be chauffeured around in Bentleys on taxes.

      --
      "When information is power, privacy is freedom" - Jah-Wren Ryel
    9. Re:Overkill, but... by Dhalka226 · · Score: 1

      Chicago probably goes a bit overboard because of our history with snowstorms (the short version: the story goes a mayor lost reelection because of how he was perceived to handle a snowstorm), but we had close to FIVE HUNDRED vehicles deployed in this storm.

      It was something like 350 special-purpose trucks, the ones with the huge plows on the front, the dumptruck full of road salt and the salt spreader at the back (which damages roads other vehicles, by the way) and an additional 150 or so garbage trucks that can be fit with plows. And of course, at least one crew member (driver) per vehicle. Presumably, the majority of these people have other responsibilities within government -- meaning that if this snow control business isn't pure overtime, it's at least causing quite a bit of it. Then there's maintenance of this massive fleet of vehicles, the purchase and storage of huge mountains of this road salt, increased police patrols, and of course general loss of tax revenue from lost economic opportunities when people decide the roads are too dangerous to go out and buy anything (or even open their businesses).

      It's well beyond my abilities to calculate how much all of this costs on an average year, much less how much it might be able to be reduced if we had some sort of road heating system in place or what such a system would cost -- but I don't think it's unreasonable to assume that long-term, such a system could actually save money, at least in some places in the country. It should at least be explored, and snarky comments like yours that pretend to know it's not worthwhile without any such information helps nobody. Then again judging by your username and the recentness of your registration, I'm fairly certain you had no intentions of actually being a productive poster when you registered.

    10. Re:Overkill, but... by kmdrtako · · Score: 0

      Speaking of clueless -- looked in the mirror lately?

      You seem to have me confused with someone else. I'm not a teabagger, but at the same time that doesn't mean I see a lot of value in heating sidewalks and roads. But if someone else does, great; they can pay for it.

      And BTW, I already get a bill for the street upkeep -- and I'm happy to pay it.

      Karma? I've already got crappy karma here. Now get off my lawn.

  9. If it's gotta be dead... by NoxNoctis · · Score: 1

    Kill it with fire.

    --
    "You're awefully cute, but unfortunately for you, you're made of meat."
    1. Re:If it's gotta be dead... by Anonymous Coward · · Score: 0

      Better idea: Nuke it from orbit. It's the only way to be sure.

  10. The Russians are already doing this by robert+bitchin' · · Score: 1
    1. Re:The Russians are already doing this by linuxgurugamer · · Score: 1

      They aren't melting the snow, although that is one of the side effects. They are using the engines to blow the snow away.

    2. Re:The Russians are already doing this by mangu · · Score: 1

      What a shame, those engines really belong in a museum. They are Mig-15 engines which have centrifugal compressors and are similar to the first British jet engines developed in the early 1940s. Actually, from the outside, these look a lot like the De Havilland Ghost.

      The Mig-15 used ttechnology the Soviet Union got from the British during WWII. During the Korean war these centrifugal compressor engines were already obsolete and the Mig-15 was inferior to the American F-86, powered by the axial flow J35 engine.

    3. Re:The Russians are already doing this by Handover+Phist · · Score: 1

      "The extreme cold there puts ice on the runways, and that of course has to be got rid off for airplanes to take off. That’s where things get badass; they use Klimov VK-1 jet engines from Mig-15 planes, or engines from Mig-17s to thaw the ice. You know, it gets pretty impressive when an engine from a fighter jet gets to work as a snow blower."

      Dude, I'd work that job.

      Don't they have rock salt where you guys come from? Forgive me, I'm Canadian, but shovel the driveways, use salt on the walkways, and hire guys with trucks and CATs to push the snow outta the way.

      `Course, taxes might pop up a notch to pay for those guys to work.

  11. Like bombing an ice dam by Anonymous Coward · · Score: 0

    I was told that in the old days over at the local base (Selfridge) the river formed an ice-dam and parts of MtClemens were getting flooded. The boys at the base allegedly made a bombing run to clear it. If anyone can confirm this, that would be cool.

  12. Ok by Anonymous Coward · · Score: 0

    Well, the letter says they're worried about the flooding of domiciles, was this fear unfounded?

  13. Snow Gnomes Business Plan by RunzWithScissors · · Score: 2

    Step 1: build pier into the ocean
    Step 2: push snow off pier into ocean
    Step 3: ????
    Step 4: PROFIT!!!!!!


    -Runz

  14. this reminds me... by SethThresher · · Score: 3, Funny

    Doesn't the Secret Service have a supply of flame throwers they've used in the past to clear out streets when the president is suddenly snowed in somewhere? I remember reading about that, but I don't remember which president it was for...

    1. Re:this reminds me... by brian0918 · · Score: 1

      They keep them in the inside left pocket of their black suits, next to the rocket launcher.

    2. Re:this reminds me... by MozeeToby · · Score: 1

      You're modded funny, but sometimes reality is unrealistic:

      "The Engineers teamed up with more than 1,000 District of Columbia employees to clear the inaugural parade route. Luckily much equipment and some men had been pre-positioned and were ready to go. In the end the task force employed hundreds of dump trucks, front-end loaders, sanders, plows, rotaries, and flamethrowers to clear the way."

      http://voices.washingtonpost.com/capitalweathergang/2009/01/inauguration_weather_the_case.html

    3. Re:this reminds me... by pak9rabid · · Score: 4, Funny

      I remember reading about that, but I don't remember which president it was for...

      That's right..you don't.

      Signed,
      The Secret Service

    4. Re:this reminds me... by Anonymous Coward · · Score: 0

      An urban legend says that this was done in January 1961 for JFK's inauguration.

    5. Re:this reminds me... by Anonymous Coward · · Score: 0

      Why would they need a flamethrower. Just get the president out and let the hot air start flowing.

  15. Napalm? by Anonymous Coward · · Score: 0

    Wouldn't napalm be much more effecient??

    1. Re:Napalm? by oodaloop · · Score: 1

      Not sure if this is a joke, but flamethrowers use napalm.

      --
      Tic-Tac-Toe, Global Thermonuclear War, and relationships all have the same winning move.
  16. this isn't more outlandish than "snow melters" by SuperBanana · · Score: 3, Funny

    Many cities use snow melters to deal with snow; that's basically the same thing. I really wonder why environmentalists aren't up in arms about it; the snow melters can burn hundreds of gallons of fuel an hour, which is more fuel than it takes to a heat a house for a month.

    1. Re:this isn't more outlandish than "snow melters" by AlejoHausner · · Score: 2
    2. Re:this isn't more outlandish than "snow melters" by timeOday · · Score: 1

      I bet if you made a pie chart of all energy used for heating homes vs. snow melters on an annual basis, the snow melters would look quite small.

    3. Re:this isn't more outlandish than "snow melters" by blair1q · · Score: 2

      136 tonnes (metric, likely) of snow times 333.55 joules/kg to melt it is 45.3 GJ/hr

      a gallon of gasoline gives about 125k BTU per gallon, which at 1054 j/BTU is 132 MJ/gal.

      45.4 GJ/hr / 132 MJ/gal = 344 gallons per hour of gasoline.

      How big is 136 tonnes?

      Well, if one lane of a road is 10 feet wide, and the snow is 1/10th the density of water (which is typical for new snow on the ground), a foot of snow is 0.28 m^3 per linear foot and that weighs about 28 kg. 136 tonnes would then cover 136000/28 = 4850 linear feet of road.

      So, each hour, this thing could clear about 4/10ths of a mile of two-lane, and would burn over $1,000 worth of gas doing it.

      And this was more economical than a snowblower exactly how?

    4. Re:this isn't more outlandish than "snow melters" by M.+Baranczak · · Score: 1

      Hauling the snow away also burns fuel. I imagine in some places the snow melters might actually be more efficient.

    5. Re:this isn't more outlandish than "snow melters" by SirWhoopass · · Score: 1

      Correct. Melting can be more efficient than hauling the snow somewhere in a truck. Also, snow removed from parking lots and roads isn't exactly clean. It is full of trash and pollutants. The snow-melting rigs will filter the water before discharging it.

  17. They are doing this in Toronto Canada by Lizard_nut · · Score: 1

    I live in an area that was buried under 4-6 feet of snow over night back in December. The city I live in borrowed special trucks equipped with a flame device from the City of Toronto to melt snow in the down town area instead of trying to load it on to trucks with Loaders and haul it out and dump it some where. So, ya it's perfectly reasonable...

  18. Kill it with fire!! by Thadd.Isolas · · Score: 1

    Kill all the snow with fire!

  19. Giant halogen heaters FTW by Twinbee · · Score: 1

    I think a slightly more sensible version of flamethrowers would be to use giant halogen heaters in place of streetlights, and feed them megawatts of energy. Quite apart from solving the snow problem, we could even keep our streets warm that way for people to walk along generally.

    --
    Why OpalCalc is the best Windows calc
    1. Re:Giant halogen heaters FTW by Anonymous Coward · · Score: 0

      because global warming needs a kick in the ass.

    2. Re:Giant halogen heaters FTW by Anonymous Coward · · Score: 0

      That'll be fixed by attaching giant air conditioners to telephone poles.

  20. NASCAR! by drainbramage · · Score: 1

    How about those NASCAR jet engine track dryers.
    Now get off my freshly melted lawn.

    --
    No brain, no pain.
  21. Montreal's solution to the problem by AlejoHausner · · Score: 1

    The snowblower was invented in Montreal, for a good reason: they get lots of snow, and it stays in place until March. Hence the city has come up with an almost militaristic solution. It involves giant snowblowers, dump trucks, blinking red lights, and looking for your car (which is not where you parked it) after the city crews come up your street: http://chicagomontreal.blogspot.com/2006/01/snow-removal-in-montreal.html

    1. Re:Montreal's solution to the problem by Anonymous Coward · · Score: 0

      That's pretty much how it happens in Sioux Falls with a few exceptions. The city only clears sidewalks on major streets, residents must clear their own sidewalks or be fined (the city has programs for people who can demonstrate a physical inability to clear their walk). Our snow is often still around at the beginning of May and snow piles sometimes make it to June.

      Driving on a road while the pile/berm is being moved to the middle of the street can be quite exciting especially in a compact car, and snow plows have the right of way...all the time.

    2. Re:Montreal's solution to the problem by jittles · · Score: 1

      I was just in Breckenridge, CO for Christmas and I can report that they do the same sort of thing to keep the snow clear there, as well. I don't know that they tow cars, but no one seems to park cars on the street there in the first place.

    3. Re:Montreal's solution to the problem by Tiblanc · · Score: 1

      If it's like here in Quebec city, it's actually illegal to park your car in the street when they are clearing the snow. Leave your car in the street and you'll find it a few streets away with a ticket in your windshield. That's a good incentive for people to get their cars out of the way after a snowfall.

  22. Why you don't want to melt the snow by spiffmastercow · · Score: 1

    Okay, let's say you melt the snow with a giant flamethrower. Then what do you do? Move on to the next patch with your giant flamethrower. What happens to the first patch that you burned the crap out of? It re-freezes, not into another snow drift, but a sheet of ice several inches thick.

    1. Re:Why you don't want to melt the snow by Anonymous Coward · · Score: 0

      If you use enough heat, the snow should evaporate after melting. Of course, it will just condense somewhere later, but it's not likely to form a sheet of ice.

    2. Re:Why you don't want to melt the snow by gnapster · · Score: 2

      I think the idea is that you melt the snow near the storm drains, first.

    3. Re:Why you don't want to melt the snow by dead_user · · Score: 1

      It seems to be referring to disposing of the snow after the temperature reaches above freezing, but in a more controlled manner than it all just melting at once. This is to prevent the rivers from being hit with a massive amount of water all melting at the same time, thus overflowing the rivers and causing even more damage.

  23. Energy efficiency by PPH · · Score: 1

    What does it take to melt one kilogram of snow vs shovel it up and truck it away? The latent heat of fusion of ice is 335 kJ/kg. So what does it take to truck it away? This would depend in part on the packing density of the snow.

    And don't forget the teamsters wages for plow/truck drivers vs the Flame Thrower Local contract terms.

    --
    Have gnu, will travel.
  24. 1960s Sno-Melter illustration and article by SlideGuitar · · Score: 1
  25. Already doing it? by edmicman · · Score: 1

    That reminded me of a post on Gizmodo awhile back where someone was already doing that.

    1. Re:Already doing it? by compro01 · · Score: 1

      Not really melting the snow, though it does do that a bit. It's mostly used like a humongous leafblower to simply move the snow.

      --
      upon the advice of my lawyer, i have no sig at this time
    2. Re:Already doing it? by Anonymous Coward · · Score: 0

      Not really melting the snow, though it does do that a bit. It's mostly used like a humongous leafblower to simply move the snow.

      These "Humongous leafblowers to simply move snow" have a name, they are called Snowblowers...

    3. Re:Already doing it? by compro01 · · Score: 1

      We appear to be operating with different definitions of snowblower. Technically, the jet trucks do blow snow, but a snowblower, at least by Canadian definition, uses an impeller or auger and impeller to move snow.

      --
      upon the advice of my lawyer, i have no sig at this time
  26. The Fitth Element by PolygamousRanchKid+ · · Score: 3, Funny

    I first watched this film in German ... and then I watched it later in English ... some guy (with a brilliant Texan accent) traded some guns with flame throwers and nets to some creepy crawler alien folks for stones which they didn't have. It's a hoot and a half!

    --
    Schroedinger's Brexit: The UK is both in and out of the EU at the same time!
  27. Snow Melters by PackMan97 · · Score: 1

    Most major northern airports have snow melters that do exactly that, melt snow. They work pretty well. http://www.youtube.com/watch?v=jNERNVAlAMo

    Of course, we can't have our railways held hostage by snow either, in that case, they just strap a jet engine onto a rail care and melt snow that way. http://www.youtube.com/watch?v=U5OrCCGV6hg&feature=related

    Where there is a problem, we'll find a solution!

    1. Re:Snow Melters by Steve+Newall · · Score: 1

      Toronto has a snow melter as part of it's fleet of snow clearing equipment. See http://www.toronto.ca/transportation/snow/torontomelt.htm

    2. Re:Snow Melters by vonux · · Score: 1

      Northern airports also use actual flamethrowers. Action shot from Evenes Airport, Norway in this forum post: http://forum.flyprat.no/showpost.php?s=7562a4e68a7a1dcfbf71de30dec0af1b&p=23882&postcount=9

    3. Re:Snow Melters by zhiwenchong · · Score: 1

      Oops I meant 500 tons/hr, not 5000.

  28. Of course! by the_rajah · · Score: 1

    What could possibly go wrong?

    --


    "Do the Right Thing. It will gratify some people and astound the rest." - Mark Twain
  29. Fog is best.... by klubar · · Score: 1

    Short of bright sunny and 80F (which is unlikely in February in the Northeast), warm air (> 30 F) and fog is most effective at melting snow. The fog acts as a reasonable thermal conductor accelerating the snow melt. Surprising, rain is lousy at melting snow and just creates a mess. Cold and bright sun does melt some snow--especially if it's been plowed and is on blacktop (aka asphalt or bituminous concrete). Overtime, the snow also compresses so it appears to be melting.

    1. Re:Fog is best.... by Wyatt+Earp · · Score: 1

      Yep, short of fog, low overcast 30-45 degree days work really well, or a good 40 degree rain.

  30. well by fireylord · · Score: 1

    This sounds rather unlikely, as what lunatic is going to run the risk of putting an airframe in the sky with explosives on it instead of just delivering them from the ground? It's not like there's any need for a deep strike mission!

  31. Call Karol Kane by Anonymous Coward · · Score: 0

    She melts all the stuff in the frozen foods section, should work for snow as well.

  32. haulaway trucks with heated compartments by Anonymous Coward · · Score: 0

    I just heard yesterday that some city had these - the plowed snow is loaded into these haulers, the compartment where the snow is has heaters to melt it (possibly propane-powered? electric?), and the truck has a hose for drainage. The truck takes its load away from the street it was plowed from, drives over to a sewer manhole, and puts its drain tube into the manhole to drain away the meltwater. Apparently this was on TV recently - Discovery? - and it sounds like the answer to me. No long delivery to a remote pond or lake, no pollution of a pond or lake, and no ice formation from the melted water as it streams away.

    Somewhat less exciting than flamethrowers though. What if there was a frozen person under the drift - a flamethrower would scorch them and make identification that much tougher, as well as giving the snow-removal crew nightmares. Ick.

  33. Wait - they can't dump it because of contaminants? by dcigary · · Score: 4, Insightful

    So, they can't dump it into the river because of contaminants, but instead they'll wait for it to melt and wash into the river?

    Am I missing something here?

    --
    ...my Karma ran over your Dogma...
  34. flamethrowers? how about jet engines on trucks: by circletimessquare · · Score: 3, Informative

    the russians don't mess around when it comes to snow removal. they take a klimov vk-1 jet engine from a mig-15 and strap it on a truck, amongst other eyebrow raising configurations:

    http://www.darkroastedblend.com/2009/08/jet-engines-on-trucks-for-fun-and.html

    i think i would step a little livelier if i saw a snow plow like that coming at me down the street

    --
    intellectual property law is philosophically incoherent. it is your moral duty to ignore it or sabotage it
    1. Re:flamethrowers? how about jet engines on trucks: by myowntrueself · · Score: 1

      That would also work really well for crowd control!

      Reminds me of the Harkonnen 'burners' from the Dune prequels.

      --
      In the free world the media isn't government run; the government is media run.
  35. that's not a torch, THIS is a torch! by Thud457 · · Score: 1
    --

    the preceding comment is my own and in no way reflects the opinion of the Joint Chiefs of Staff

  36. Possibly off topic, but I have to say it by Weaselmancer · · Score: 4, Interesting

    Something about letters from that era that are just so simply elegant. I love reading letters from that time.

    --
    Weaselmancer
    rediculous.
  37. Re:Wait - they can't dump it because of contaminan by Ogive17 · · Score: 1

    Not all drains go straight to the nearest water source. It's possible it goes through a quick treatment first.

    --
    "Action without philosophy is a lethal weapon; philosophy without action is worthless."
  38. Did it work? by Anonymous Coward · · Score: 0

    Did it work? Because Texas hasn't discovered the greatness of Salt or Deicers yet.

  39. Conductive concrete by Anonymous Coward · · Score: 0

    My college is experimenting with conductive concrete to not only transmit power through the roads, but to help melt snow/ice on roads/bridges

    http://www.conductive-concrete.unomaha.edu/

  40. a beter solution by KernelMuncher · · Score: 1

    If the mayor wanted to get the best use of MIT, he could just send naked pictures of Seven of Nine to the entire student body. The heat from so many nerds spontaneously combusting would be more than sufficient to melt the snow.

  41. Re:Wait - they can't dump it because of contaminan by smellsofbikes · · Score: 2

    There's an extremely long history of people considering that actions that lead to a bad result are bad, while inaction that leads to the same bad result is much less bad. I'm not saying it's a logical mindset, but it is very definitely how humans think. A common example, when ethics and economics people talk about this, is: if you push someone in front of a train you're a murderer, but if you don't pull someone who is on the tracks off, or signal the train to stop, you're merely a selfish bastard.

    --
    Nostalgia's not what it used to be.
  42. Al Gore! by Gravitas26 · · Score: 1

    Call Al Gore, he can fix it! lol

  43. Original letter and the response by martyb · · Score: 1

    Given the fact that they're facing similar problems today, we can conclude that MIT failed to come up with anything useful in response to the mayor's query. It would be nice to know what their response was, if they responded at all.

    It's actually an interesting read: http://libraries.mit.edu/archives/exhibits/curley/index1.html; the link contains the original letter AND MIT's response.

    tl;dr: Here's a summary of the response (dated Jan 28, 1948)

    1. Use salt; corrodes cars and roads.
    2. Use hot water: Fuel consumption would be high.
    3. "The use of flamethrowers to dissipate snow would be neither practicable nor efficient. Even the earlier types of flamethrower were designed so that combustion took place about twenty yards away from the nozzle. Obviously it would be hazardous to use a flame thrower for snow removal at this distance. If used at a closer range, there would be an excess of vaporized fuel on the snow, resulting in poor combustion, a considerable amount of black smoke and relatively low hear per unit of fuel consumed."
    4. "...On the basis of such information as we have, only the salt method appears to be an economical alternative to the present method of snow removal."
    1. Re:Original letter and the response by aix+tom · · Score: 1

      Of course I have come up with a solution in seconds to get hot water without fuel consumption:

      1) Give away free beer
      2) Lock all the restrooms

  44. We had a Flamethrower by Anonymous Coward · · Score: 0

    I lived fairly far up north. My dad had a Flamethrower sitting above the work shelf. He had used to it to remove large amounts of snow (and quickly dry) large metal machinery. Last time I saw it used was in the mid-1990's. Worked like a charm and we where able to do repairs out side on metal machines at -20. You needed all the ice melted on metal machines to be able to undo bolts and things. The big plus was that the metal was warm for a few minutes after. Nice when you had to do fine work with no gloves on.

  45. It's been done before by Raul654 · · Score: 3, Interesting

    The night before John F. Kennedy's inauguration in 1961, a snowstorm dumped 8 inches of snow on Washington DC. The Army Corps of Engineers worked franticly, using flamethrowers to clear the streets. Click here for the full story.

    --


    To make laws that man cannot, and will not obey, serves to bring all law into contempt.
    --E.C. Stanton
    1. Re:It's been done before by Misagon · · Score: 1

      I doubt that they were actually using flame throwers. They must have confused them with some kind of large blowtorch. A flame thrower propels burning fuel or napalm over a distance. That fuel sticks to whatever it lands on and continues burning. A flame thrower is supposed to inflict serious burns. You can not use a flame thrower to clear snow without a serious risk of starting unintended fires.

      --
      "We mustn't be caught by surprise by our own advancing technology" -- Aldous Huxley
  46. Re:Wait - they can't dump it because of contaminan by Anonymous Coward · · Score: 0

    We're talking about snow from roads, parking lots, etc, which is much more contaminated than the average snow. If you let if melt with the rest of the snow, the contaminants will be diluted, rather than dumped in the rivers or ocean all at once. Also, I think that significant amounts of the snow run-off (along with contaminants) would be absorbed and filtered through the ground.

  47. Why not? by JockTroll · · Score: 1

    Everything is better with flamethrowers. Even flamethrowers are better with flamethrowers. And flamethrowers with flamethrowers are awesome if you put flamethrowers on them.

    --
    Geeks are so full of shit that "beating the crap out of them" takes a whole new meaning.
  48. We have a few snow melters... by Anonymous Coward · · Score: 0

    I wonder if google was even deployed to answer this question.

    We missed the expected 30 cm of snow...perhaps you borrow ours?

    http://www.toronto.ca/transportation/snow/torontomelt.htm

  49. Snow Melters by zhiwenchong · · Score: 1

    Most snow melters work at very high thermal efficiencies (90 - 98%). Typically, one ton of snow requires 1.5 US gallon of diesel to melt. Remember, snow is not ice -- it's far less dense.
    http://www.snowmelter.com/en/snowmelters_faq.php

    Snow melters can melt anything from 20 to 5000 tons of snow/hour, depending on their design capacity. Airports already use this technology extensively -- it's nothing new.
    http://www.snowmelter.com/en/clients.php

  50. Shortage of imagination is a two way street. by Anonymous Coward · · Score: 0

    You can do this if you have a large lawn. What happens in a large urbanized area where you've run out of places to pile higher?

    This is what the TFA was talking about.

  51. Re:Wait - they can't dump it because of contaminan by Anonymous Coward · · Score: 0

    Yes. When the snow melts, all the shopping carts and tires and hubcaps and coffee cups and plastic bags will stay where it is, and can get scooped up.

  52. The rest of the story... by Anonymous Coward · · Score: 0

    The original letter AND the reply from MIT are posted here.

  53. Burning streets? by beschra · · Score: 1

    How long until a flame thrower lingers a bit too long on a patch of asphalt and the road starts burning? I guess the added fire would help clear the snow, though.

    --
    It is unwise to ascribe motive
    1. Re:Burning streets? by chaos579 · · Score: 1

      it all depends on the mixture that you are using as a ignition source

  54. This doesn't seem to happen - it evaporates by name_already_taken · · Score: 1

    Didn't you have any problems dealing with the melt water? I would think that the water would just re-freeze when it runs off the heated part.

    Since we just had a major snowfall in the Chicago area, I'd just point out that I have piles of snow next to my driveway that are at their highest almost 6ft tall from clearing the driveway and sidewalks. It's not possible to clear the driveway of snow and ice completely, due it not being perfectly flat.

    I cleared the driveway down to about 1/2 an inch of snow, and spread salt on it.

    My driveway is now dry - not covered in either ice or salt water - there is a dry salt residue on it.

    The water didn't run off, it evaporated, probably due to the very low humidity of the air.

    --
    Putting moderation advice in your .sig lowers your karma!
  55. naw by Anonymous Coward · · Score: 0

    Get Chuck Norris to stare at the snow. It will melt.

  56. Nuclear powered vacuum cleaners to the rescue !!! by Anonymous Coward · · Score: 0

    They should wait a few years and suck it upw with nuclear powered vacuum cleaners

  57. Many reason by Anonymous Coward · · Score: 1

    Main reason which is self evident : salt work EVEN AT NIGHT. Meaning you can spray it at 4/5 in the morning and have citizen a ice free street.ASh not so much. You have to wait for sunrise and it freeze again at night.

    In addition in no particular order :
    1) salt will stop ice reforming so quick, and particularly surface ice (ground below zero, water on it => surface ice nasty to walk on). You don't sprinkle salt on snow to melt it, you sprinkle it on ice/compacted snow before it become ice. The salt is to avoid sliding on foot or on car.
    2) Ash make everything with a dirty muck , which the city has to remove, particularly it could block canalizations.
    3) carbon rich ash is black. Normal ash is gray , light gray.

    I am sure there are a lot of other reason. I think the above are waaaaay enough to stamp your idea as "not so good"

  58. Re:Wait - they can't dump it because of contaminan by Anonymous Coward · · Score: 0

    Yes you are. Water that goes down the drains in the streets is not supposed to go unprocessed into the river. How you, or the guys in TFA does, I don't know, but that's how it is in any reasonably developed part of the world.

  59. Cheaper solution by Anonymous Coward · · Score: 0

    Move somewhere warmer.

  60. Can't dump it? by wcrowe · · Score: 1

    So, federal law prevents them from dumping the "contaminated" snow in the Charles river, or the harbor. What I would like to know is this: where do they think all that snow is going to go if it melts on its own?

    --
    Proverbs 21:19
    1. Re:Can't dump it? by Anonymous Coward · · Score: 0

      Boston and suburbs use Combined Sewer Overflow systems... adding that much fluid to the system all at once will cause all kinds of problems. Letting the snow melt on its own will still affect the system, but will happen over time, rather than all at once. Besides, Boston and the suburbs are quickly running out of money from the plow/salt budget - where are they going to get the money for these snow melting trucks?

      combined sewer overflow Wiki link - http://en.wikipedia.org/wiki/Combined_sewer

      PS - my apologies for the anon post

  61. Whatever happens... by LittleBigScript · · Score: 1

    He needs to make sure these "Engineers" are properly licensed.

    Or else he would have had to write another letter.

  62. The land filters the snowmelt by sean.peters · · Score: 1

    When the snow melts in the springtime, the meltwater trickles runs through the grass, soaks through the ground, goes through wetlands, etc... all of which removes contaminants from it. When you dump the snow straight into the harbor, none of that happens - all the pollutants go straight into the ocean.

  63. The actual letter is fairly reasonable by Mad-cat · · Score: 2

    While it sounds funny, when I actually read it my thought was "he seems like a reasonable man."

    He saw something happening, used his past observations to predict a likely outcome if no action was taken, realized this outcome would be dangerous to the people he was sworn to protect, and then asked people who are smarter than he is what he should do to prevent or reduce the bad outcome.

    He gave them some ideas that he had come up with and asked if they were worth investigating. While they may have been silly ideas, at least he had the common sense to ask smarter people for help figuring out what to do instead of just pursuing whatever boneheaded idea he came up with. Does anyone remember the recent "possums released into NYC to deal with rats" story?

    I think we could use more public officials like this guy.

  64. FEMA has snow melting flame throwers. by carpefishus · · Score: 1

    FEMA has snow melting flame throwers. The problem is that FEMA sent them all to New Orleans to prevent another Katrina-like under-response.

    --
    Facts take all of the premium out of arm waving - T. Reynolds
  65. Datacenter Cooling by Anonymous Coward · · Score: 0

    Build a couple giant datacenters like the ones built in North Carolina and Virginia, use the snow to cool them and then sell the computing power for hosting, distributed computing or cloud apps. And hope for a long winter...

  66. Wonderful! by Anonymous Coward · · Score: 0

    How great...you can read reddit.

  67. Re:Wait - they can't dump it because of contaminan by dio5 · · Score: 1

    Because the water that goes into the sewer system does not go straight into the river or the harbor. It first goes to a water treatment facility and then flows into the harbor. http://www.mwra.state.ma.us/03sewer/html/sewditp.htm

  68. 1948??? A new low... by Foobar+of+Borg · · Score: 3, Funny

    This a new low, even for slashdot. I know stories are late here, but 1948???

    Next on slashdot, an article about how scientists are developing this interesting electronic device called a "computer" and how it will revolutionize the world.

  69. Shortage of imagination is a THREE way street. by Cyberax · · Score: 1

    Pile snow on trucks and move it to a larger lawn. That's what we do in my home town when snow is 2 meters deep.

    And yes, it's actually cheaper than melting it. I've calculated it once just for fun.

  70. Flamethrowers, hell. Use explosives. by Ungrounded+Lightning · · Score: 1

    Heard about a guy who used primacord to shovel his sidewalks.

      1) Run a length down the middle of the sidewalk.
      2) Set it off. WHACK!
      3) Result: Clean walk and two piles of snow beside it.
      4) Profit?

      5) Try to explain this to the BATF(E) and DHS.
      6) Collect a free Club Gitmo T-shirt.

    Haven't tried this myself yet, so can't tell you whether/how well it actually works.

    Probably won't,either, since the Supreme Court seems unlikely to extend District of Columbia v. Heller and McDonald v. Chicago to explosive technology in what remains of my lifetime.

    --
    Bantam Dominique roosters crow a four-note song. Once you've heard it as "Happy BIRTHday" you can't NOT hear it that way
  71. Take Your Pick: by pilkch · · Score: 1

    Snow or Flood.

  72. Maybe Infra-red heat lamps would be a better idea by cavehobbit · · Score: 1

    I have been investigating ways to avoid shoveling, or buy a snow-blower. I have no garage to store it in and my driveway is below grade, so hauling that thing to and from the driveway is at the least inconvenient. And that is without worrying about some drive-by theft if I try leaving it in the driveway over the winter. After looking at the various alternatives, electric cables, hot water from a tank or geo-thermal pumped through plastic pipes, I ran across infra-red heat lamps being used for this. Looks interesting. I have no clue practical this is, or how much it will cost to install yet. But since I need to move and rebuild my driveway anyway, I figure I will ask some contractors for estimates on how much these would add to the cost. Or cost to run for that matter. Here is one link to a somewhat biased source: http://www.infraredheaters.com/snowice.htm#3.0%20%20Overhead

  73. Re:Wait - they can't dump it because of contaminan by Anonymous Coward · · Score: 0

    "Federal law prevents the city from dumping snow into the Charles River (too many contaminants), so the city is charged with finding ever more places to pile ever higher mountains of snow."

    Yes, you are missing something. It appears they dont want to contaminate the snow with polluted water from the carles river.