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Thread: HYDROGEN COMPRESSOR

  1. #1 HYDROGEN COMPRESSOR 
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    Hi guys

    does anyone know of a cheap way to build a gas compressor, the gas in this case is hydrogen. which I make myself, just need a bit oh help with the compressor.

    Was thinking of a fridge compressor, any ideas?

    tim


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  3. #2  
    Time Lord
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    Bump


    or any radical ideas for compressing hydrogen?


    A pong by any other name is still a pong. -williampinn
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  4. #3  
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    because of the explosive nature of hydrogen i would suggest looking into buying a compressor made for it. safety first
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  5. #4  
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    Because of the explosive nature of hydrogen, not only do I agree you should look for a professional one, but you should check local laws to see if it is illegal to have compressed hydrogen for unlicensed persons.

    One might think you're planning to make a crude bomb.
    --
    -M

    "Those that would give up essential liberty to obtain a little temporary
    safety deserve neither liberty nor safety."

    -Benjamin Franklin, An Historical Review of Pennsilvanya, 1759
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  6. #5  
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    Are you compressing it to try and liquefy it or just to have compressed hydrogen gas? If to liquefy I'm afraid you're not in luck. I looked into attempting something similar before but you need industrial compressors to achieve the high pressures.
    Check wikipedia for the pressures involved in liquefying it. Off the top of my head I think it's around 1 megapascal or so which is huge.
    Thinking of the question is greater than knowing the answer...
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  7. #6  
    Time Lord
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    Quote Originally Posted by Mars
    Are you compressing it to try and liquefy it or just to have compressed hydrogen gas? If to liquefy I'm afraid you're not in luck. I looked into attempting something similar before but you need industrial compressors to achieve the high pressures.
    Check wikipedia for the pressures involved in liquefying it. Off the top of my head I think it's around 1 megapascal or so which is huge.

    Could you supplement your efforts by cooling it, or does it also take an insane amount of cooling. Then, of course, there's the problem of how to store it once you've compressed it.

    Another possibility, other than compressing it,if you're looking to store more hydrogen in a smaller area, is to fill the tank with chicken feathers. Apparently they give the gas more surface area to cling to, which helps.

    http://blogs.edmunds.com/greencaradv...ined-idea.html

    http://tech.blorge.com/Structure:%20...cken-feathers/
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  8. #7  
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    Kojax,

    That is what is happening. By compressing the gas you cause it to heat up. You compress it by X amount thus increasing its temperature from the start temperature by Y amount. If you take Y out of the system and allow it to expand again you have just reduced your gases temperature by Y amount below the starting temperature. However you need to compress it to huge pressures to get to lower temperatures. I'm basically just describing the operation of a fridge.

    I may have misunderstood your post but I'm just describing how to liquefy the gas which I think is what the OP was trying to do.
    Thinking of the question is greater than knowing the answer...
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  9. #8  
    Time Lord
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    Quote Originally Posted by Mars
    Kojax,

    That is what is happening. By compressing the gas you cause it to heat up. You compress it by X amount thus increasing its temperature from the start temperature by Y amount. If you take Y out of the system and allow it to expand again you have just reduced your gases temperature by Y amount below the starting temperature. However you need to compress it to huge pressures to get to lower temperatures. I'm basically just describing the operation of a fridge.

    I may have misunderstood your post but I'm just describing how to liquefy the gas which I think is what the OP was trying to do.
    Yeah, that answers my question very clearly. So, cooling and compressing have basically the same result? (But cooling seems safer somehow. Less likely to blow everything up. )

    As to the chicken feather option, if I'm reading the articles right, then filling a tank with chicken feathers can increase the amount of hydrogen stored by a factor of up to 75 times the ordinary amount, without compressing it at all. Maybe that would be a safer option for the OP to look into.
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