Refrigerant Circuit With RESTRICTOR And Reservoir
HP- High pressure side of refrigerant circuit.
LP- Low pressure side of refrigerant circuit.
| Component | Aggregate State of Refrigerant | Pressure (positive pressure) | Temperature |
|---|---|---|---|
| -1- A/C compressor, HP side | Gas | up to 20 bar (290 psi) | up to 70 °C (158 °F) |
| -2- Condenser | From gas to vapor to fluid | up to 20 bar (290 psi) | up to 70 °C (158 °F) |
| -3- Restrictor | From fluid to vapor | HP side up to 20 bar (290 psi) LP side greater than 1.0 bar (14.5 psi) | HP side up to + 60 °C (140 °F) LP side warmer than -4 °C (25 °F) |
| -4- Evaporator | From vapor to gas | greater than 1.0 bar (14.5 psi) | Warmer than -4 °C (25 °F) |
| -5- Reservoir | Gas | ||
| -6- A/C compressor low pressure side | Gas |
Pressures on A-side are maintained at approximately 2 bar (29 psi) absolute pressure (corresponds to approximately 1 bar (14.5 psi) positive pressure) by "regulating" A/C compressor also at various engine speeds. However, this applies only within the performance range of the A/C compressor; if the performance limits of the A/C compressor are exceeded. Refer to PRESSURES, CHECKING .
NOTE:
In vehicles with A/C Compressor Regulator Valve -N280-, the pressure is modified on the low pressure side by the valve.
Arrows point in direction of refrigerant flow.
HP- High pressure side of refrigerant circuit.
LP- Low pressure side of refrigerant circuit.
Courtesy of AUDI OF AMERICA, LLC- A/C Compressor, HP Side
- Condenser
- Restrictor
- Evaporator
- Reservoir
- A/C Compressor, LP Side