In cooling devices {air conditioner}|, a pump {compressor, air conditioner} compresses hot Freon or other easily liquefied gas. As fan blows air from outside, or water, goes, over small tubes, gas cools, and so liquefies. Then liquid goes through a tiny opening {constriction}, causing gas to expand and thus cool. Cool gas passes through tubing coils, through which fan blows room air. Room air heat passes to cool gas, which then compresses to start cycle again. Air conditioners have ratings, in British Thermal Units (BTU), of how much heat they can remove from air.
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7-Machine-Kinds-Electromechanical-Cooling
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Date Modified: 2022.0224