Compressor HVAC: Description and Operation

Compressor, Part 1:

Compressor, Part 2:

Installation position in the refrigerant circuit
Between the lines leading from the accumulator/dehydrator to the condenser.

Function
The air conditioning compressor has the following functions:
- Compressing the refrigerant.
- Circulating the refrigerant.

Operation
The compressor draws in cool refrigerant gas from the accumulator/dehydrator via the suction connection and forces it into the condenser.

Ideally, the compressor condenses the refrigerant gas from approx. 2 bar to 12-18 bar, the gas heating up from 0°C to approx. 70-110°C during this process. In extreme climatic conditions, the pressure on the input side can be up to 3 bar and on the high-pressure side up to 24 bar. The hot gas is pumped to the condenser under high-pressure via the high-pressure connection. The compressor is only able to compress gaseous material; any liquid sucked in would destroy the compressor. This is why the air conditioning system may only be filled with gaseous material at the low-pressure end.