compressors and dual compressors on an old AC ??

[kenmore1978]

natural gas refrigerators-A/C

These work entirely on convection, driven by the heat from a gas flame or electric heater. It's calded the "absorption" system. Still used a lot in recreational vehicle refrigerators where the heat to drive the refrigeraton cycle can be provided by LP gas or 12 or 120 volt electric heater, depending on circumstances of where one is parked. Only drawback is that the system must be level to work properly.

Here's a link

http://www.nh3tech.org/absorption.html

 

[kenmore1978]

car a/c

lbcarguy, have you had to deal with the older car a/c that used methods like Hot Gas Bypass valves and Suction Throttling valves? Those are interesting in principle of operation.

 

[gregm]

wow, so it appears that the natural gas system is completely opposite of the "freon" system whereas "its a gas" inside the evaporator and becomes a "liquid" outside in the condensor, or should I say, they become gas/liquid at different stages vs. freon. ?