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:

Indicator lamp for the tyre monitoring system
First read and observe the introductory information and safety warnings  Lit up Possible cause   Solution The tyre pressure of one tyre or several tyres has decreased considerably in comparison to the tyre pressure set by ...

Fitting the front towing eye
Fig. 193 In bumper at front right: depiction of variants for screwing in towing eye First read and observe the introductory information and safety warnings The towing eye is screwed into a threaded hole behind a cover on the right of the front bumper . The towing eye must always be kept i ...

Battery Charger -VAS5903- Maintenance Charging
  Note If the battery is discharged by an electrical consumer during maintenance charging, the Battery Charger -VAS5903- automatically supplies the appropriate charge. Maintenance charging can be performed without time ...

© 2016-2026 Copyright www.vwpolo.net