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Refrigerant gas loop with butterfly (throttle) and collection tank > < Pressures and temperatures in the refrigerant gas loop

Polo Mk4

Refrigerant gas loop with expansion valve
   
Refrigerant gas loop with expansion valve
A - Low pressure section of the refrigerant gas loop.
B - High pressure section of the refrigerant gas loop.

   
ComponentRefrigerant statePressure (in bar)Temperature (in degrees Celsius)
-1- Evaporator, from intake to outletVaporapprox. 1.2 bar → Noteapprox. -7 °C → Note
  (approx. 1.8 bar) → Noteapprox. -1 °C → Note
-2- Compressor, area -A-Gasapprox. 1.2 bar → Noteapprox. -1 °C
  (approx. 1.8 bar) → Noteapprox. +1 °C → Note
-3- Compressor, area -B-Gasapprox. 14 barapprox. +65 °C
-4- CondenserGas, Vapor, Liquidapprox. 14 barat outlet approx. + 55 ºC
-5- Liquid tankLiquidapprox. 14 barapprox. +55 °C
-6- Filling and suction valve, section -B-Liquidapprox. 14 barapprox. +55 °C
-7- Expansion valveLiquid, pressure relief in form of vaporapprox. 14 barapprox. + 55 °C, reduces to -7 °C
-8- Filling and suction valve, section -A-Gasapprox. 1.2 bar → Noteapprox. -7 °C → Note
  (approx. 1.8 bar) → Noteapprox. -1 °C → Note

1)  Inside the refrigerant gas loop with regulated compressor, the pressure is maintained at approx. 2 bar, regardless of the changes in heat conduction and engine speed regimes. This standard only applies to compressor power; if compressor power limits are exceeded, the pressure will rise → Chapter.
2)  In the refrigerant gas loop with an adjusted compressor, the temperature is kept within the adjustment limits of the compressor, regardless of alterations of heat transport and engine speed. This standard only applies to compressor power; if the compressor's power limits are exceeded, the temperature will rise → Chapter.
3)  Measurement values for air conditioning devices with two evaporators.
  Note
t  Compressors without a self-adjusting power system are switched off by their command device, via the Adjustment valve for the air conditioning compressor -N280-, as soon as the evaporator temperature decreases below 0 °C.
t  In vehicles with Adjustment valve for the air conditioning compressor -N280-, the pressure on the low pressure side is altered by the operation of the valve.
   

Refrigerant gas loop with butterfly (throttle) and collection tank > < Pressures and temperatures in the refrigerant gas loop