VW Polo manuals

Volkswagen Polo Service & Repair Manual: Refrigerant R134a Physical Data

Vehicle air conditioning systems make use of the vaporization and condensation process. In this case, one works with a substance which boils easily, designated as refrigerant.
The refrigerant employed is tetrafluoroethane R134a, which boils at -26.5 °C (-15.7 °F) at a vapor pressure of 1 bar (14.5 psi).
   
Chemical formula CH2F–CF3 or CF3–CH2F
Chemical designation Tetrafluoroethane
Boiling point at 1 bar (14.5 psi) -26.5 °C (-15.7 °F)
Solidification point -101.6 °C (-150.88 °F)
Critical temperature 100.6 °C (213 °F)
Critical pressure 40.56 bar absolute (588 psi) equals 39.5 bar pressure (573 psi)
Refrigerant R134a
...

Critical Point
Vehicle air conditioning systems make use of the vaporization and condensation process. In this case, one works with a substance which boils easily, designated as ref ...

Other materials:

Run-Flat Tire, Overview of a PAX Tire
PAX tires involve specially developed system that exhibits the following differences in comparison to conventional tires: Pax Tires with Supporting Ring –  -I- PAX tires with air     ...

Vehicle key
Fig. 18 Vehicle key Fig. 19 Vehicle key with alarm button First read and observe the introductory information and safety warnings Vehicle key The key can be used to lock and unlock the car from a distance . The remote control transmitter and the battery are integrated in the key. The re ...

Luggage compartment cover
Fig. 84 Open tailgate: raised luggage compartment cover Fig. 85 Behind the rear backrest: stowed luggage compartment cover First read and observe the introductory information and safety warnings When the tailgate is opened and closed, the luggage compartment cover is also raised and low ...

© 2016-2021 Copyright www.vwpolo.net