Charlie Young wrote in a message to Jim Dunmyer:
> Actually, a really inventive person could build an 
> engine-powered A/C unit from 'parts'. A small engine driving an 
> old 'open' refrigeration compressor would do the job nicely; 
> the biggest problem would probably be finding the refrigerant. 
> (many of those older units used R-12, and they don't make that 
> stuff anymore;
 CY> But they make some almost affordable substitutes. You have to 
 CY> have some kind of gov'ment certificate to use it, but it is 
 CY> supposed to be easy to get certified.  See www.aircondition.com 
 CY> for more info.
Some of us might have email,  but no web access.  Is there some other way to 
get this info?
> Years ago, natural gas was VERY inexpensive in the 
> oil-producing areas in Texas and gas-powered A/C units were 
> common for commercial applications and large estates. They used 
> little 4-cylinder engines to drive the compressors.
 CY> For stationary natural gas engines, does the gas have to be 
 CY> compressed before feeding to the engine, or can it just go from 
 CY> pipe to carbeurator?
I would tend to think that compressing it is more a matter of convenience for 
storage and transport than anything else.  Once it's going into the engine,  
you're looking at mixing the gas with a bunch of air anyway,  right?
email: roy.j.tellason%tanstaaf@frackit.com 
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