<VV> A/C Usage Re: Corvair Miles

[Joel McGregor]

Air is a very poor refrigerant because it is relatively incompressible (requires too much pressure to become a liquid).  This property is what refrigerant recovery machines use to separate air from refrigerant.  They pressurize the air/refrigerant mixture until the refrigerant liquefies and then bleed off the air which is still a gas.  The phase change in refrigerants is where we get the majority of the heat transfer.  Remember latent heat of evaporation.
http://en.wikipedia.org/wiki/Latent_heat
Joel McGregor
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From: virtualvairs-bounces at corvair.org [virtualvairs-bounces at corvair.org] On Behalf Of Ron [ronh at owt.com]
Subject: Re: <VV> A/C Usage Re:  Corvair Miles

"and, as we  know, AIR is a rather poor refrigerant"

No, it works OK!  Remember the ROVAC system that was supposed to
revolutionize automotive AC systems?  It worked alright but they couldn't
solve the noise problem with the compressor.  If they can ever make a quiet
air compressor we may yet see air as an automotive AC refrigerant.
RonH