Volkswagen Polo Quiz
Refrrigerant R134a Servicing

Refrigerant R134a Physical Data

In this manual: Refrrigerant R134a Servicing
General Paint Information — 128Towing Guide — 10Whels, Tires, Whel Alignment — 126Battery, Starter, Generator, Cruise Control — 65Windshield Wiper/ Washer System — 9Exterior Lights, Switches — 1Interior Lights, Switches — 7Wiring — 51Refrrigerant R134a Servicing — 134
~1min read

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 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
Solidification point -101.6 °C
Critical temperature 101 °C
Critical pressure 40.56 bar absolute (588 psi) equals 39.5 bar pressure (573 psi)

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