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Posted by on June 5, 2007, 10:37 pm
If you'd have done that when you were supposed to, we wouldn't
have all this global warming going on now.
On Tue, 5 Jun 2007 21:27:38 -0500, "geothermaljones"
>That reminds me...
>I've got to run out & put the summer air in my tires.
>I recommend you all do the same.
>
>gl
>goj
>stpmn
>
>
>>
>> > I'm thinking about using an air compressor to take warm air and
>> > compress it to raise the temperature in order to heat up a water tank.
>> > Once some of the heat has been removed I would intend expanding the
>> > air before reheating in the same way as you would in a heat pump.
>> >
>> > I have a couple of questions which I would appreciate some views on:-
>> >
>> > 1). Do systems exist as described above. If yes where can I get more
>> > information, if not why not?
>> >
>> > 2). I calculate the energy required to compress the air is the same as
>> > what would be required using conventional heating. If I expand the air
>> > in a piston / cylinder I should be able to recover some energy.
>> > However if I expand using a nozzle I cannot see where I can recover
>> > some of the energy used to compress the air. Can anybody explain
>> > what's going on here?
>> >
>> > 3). I'm unclear regarding the merits of either compressing the warm
>> > air removing the heat and then releasing to atmosphere compared with
>> > completing the cycle.
>> >
>> > I studied thermodynamics some years ago but need to get some
>> > understanding of the basics involved here.
>> >
>> > Any thoughts / help welcome.
>> >
>> > Thanks
>> > Numtyhead
>> >
>>
>> Yes, air will work for a heat pump, but in my own experiences I have found
>> out that certain types of air works better than other types of air.
>>
>> The air that I have found to be particularly good for heating or cooling
>is
>> the air that they put in those little cans of air that they sell at the
>> electronics store. They call the can of compressed air "air dusters".
>>
>> I don't know where they get the air but it generates a lot more heat when
>> you compress it than the air that I find around here. They may be getting
>> the air from mars or some other planet. It just may be a result of the air
>> contaminants in the air around the air duster factory where they get the
>air
>> from. I don't know, but it isn't really important.
>>
>> All you have to do is use the air in the air dusters for you air
>compression
>> system. You want to remember that you want to keep the air duster air
>> separated from the air that you are breathing. Otherwise, I have found
>that
>> the air loses it's good properties. It starts acting like the rest of the
>> air that you and me are breathing.
>>
>> To keep it separated, you have to make the system a closed loop. It goes
>> from the compressor to the heat exchanger, then you have to uncompress the
>> air by letting it pass through a restriction. When it uncompressed it will
>> get really cold because it want to regain the heat that it just lost. Run
>it
>> through another heat exchanger close to a heat source to allow it to
>regain
>> it's heat, then feed that though the compressor again.
>>
>> It seems to work a lot better than the same system with normal air in it.
>So
>> the canned air definitely has some unique property that I haven't
>determined
>> yet.
>>
>> Hopefully the manufactures of the canned air don't find out about it's
>> unique properties, because they may stop selling it so cheap. Heck, it's
>> good enough that it could even replace that nasty refrigerant they keep
>> complaining about. That would definitely make it worth more than they are
>> selling it for in the stores.
>>
>> Good luck with your experiments.
>>
>>
>
--
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