Compound Cooling Semi-Hermetic Compressor

Подробнее о видео

How Does a Compound Cooling Semi-Hermetic Compressor Work?

In this HVAC training video, Alex Orr explains the operating principles of a compound cooling semi-hermetic compressor. This type of compressor has two stages of compression, allowing it to work efficiently with very low suction pressures.

Alex shows a cutaway compressor and describes the flow path:

Refrigerant enters at low pressure, around 14 PSI, through the suction inlet.
It is compressed to an inner-stage pressure of 40-60 PSI in the first-stage pistons.
This inner-stage gas is then fed into the discharge head, where it's compressed to a high discharge pressure of around 200 PSI.
So instead of a single compression from low to high pressure, the compound compressor goes through suction, inner stage, and then discharge, which allows the compressor to handle ultra-low evaporation temperatures down to -60°F in low-temp applications.