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Thread: Is there any efficent and or convinent way to cool something

  1. #1 Is there any efficent and or convinent way to cool something 
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    without using gasses?


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  3. #2  
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    why would you set up the constraint of not using gases? compressing a gas to cause it to heat up and allowing its heat to disappate in one place, then decompressing it so it is below the temperature it had before you started is the easiest way to cool something, although compressing the gas will always require you to use extra energy to cool it, a lot of the heat energy it releases when compressed could be converted to electrical energy.

    all in all, it's a really bad idea to not use gases when cooling. you're going from a really simple design with readily available (your refridgerator does this) examples and parts to some bizzare form of cooling that nobody thought to design because we already have something so easy.


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  4. #3  
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    I don't want to do it that way for the exact reason that it uses alot of energy.
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  5. #4  
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    i wouldn't say a lot. when you consider that you're slowing down all the particles in an area, you should expect to use more energy than a good refridgerator.

    obviously there are chemical reactions that are endothermic, but they're a one time deal, you can cool something for a little while but not too long. the only place that refridgerators aren't your best option are in space, exposing something to the near vaccum of space will cause it to loose most of its energy by radiating it. however getting up there requires excessive amounts of energy from earths surface.

    so all in all, the most cost efficient way to cool something is a refridgerator. think about it, if there were any way that was more efficient to build and run, some entrepeneur would have started marketing it and it would have replaced the conventional refridgerator. that hasn't happened because there's no good way to cool stuff without gasses.
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  6. #5  
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    but I don't want to cool down an area I want to cool down a metal object.
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  7. #6  
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    You really need to tell us more.

    How big is your object? Is it more or less at room temperature, or is it hot (how hot?), or mabe it's cold? Do you want to bring its temperature down by just a few degrees, or by a few hundred? How fast do you need to cool it? Is it stationary and isolated, so you can put cooling devices of any size and weight around it, or is it the motor of a model plane, which cannot carry more than, say, a 20-gram radiator?

    I could go on and on with these questions, but I'll leave you at this and wait for your reply.

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  8. #7  
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    It is a stationary object it has to be cooled at least down to 60 degrees Farenhiet it's size can varry from the size of your fist to the size of a pillow.

    Oh also it is being supported by a wooden frame work(it is supposed to be set inside a wall with most of it exposed to the elements).
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    Just a wild guess you understand - it's an aircon compressor??

    So where do I pick up my prize?
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  10. #9  
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    There has to be another way though through amazingly cheap chemicals... just some other way not by compresing a gas.
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  11. #10  
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    Quote Originally Posted by Topalk
    There has to be another way though through amazingly cheap chemicals... just some other way not by compresing a gas.
    The most likely candidate for your amazingly cheap chemical would be water, because of its high heat capacity.

    Put your thingy into water, and expose it to artificial or natural wind (let your imagination run wild on how to do that), in the shade (google "radiator)".

    Or let it come into contact with a reservoir of water you bury deep underground, if its cooler there.
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  12. #11  
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    that is a good idea just bury it under ground. Thank you
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  13. #12  
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    You can use demagnetization method.
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  14. #13  
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    which is?
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  15. #14  
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    http://en.wikipedia.org/wiki/Magnetic_refrigeration

    or you can use a big laser:

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

    or a peltier unit which no one has mentioned yet:

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

    As long as you don't mind consuming a bit more electricity (one of the benefits of standard refridgeration is its relative energy efficiency), a peltier is cheap, easy to use/setup and will allow VERY good accuracy with a few simple electronic devices..............
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