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
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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:

Tyre pressure
Fig. 146 On the inside of the tank flap: tyre inflation pressure label First read and observe the introductory information and safety warningsThe correct tyre pressure for factory-fitted tyres is shown on a sticker and applies to all-season, summer and winter tyres. The sticker is located ...

Rolling Resistance Tires
Tire deformation when rolling causes the vehicle to loose energy that makes the rolling resistance noticeable. Deformation is significantly lowered on rolling resistance tires due to new construction and low-wear surface mixtures. ...

Securing mounts, roof bars or load carrying system
Fig. 90 Securing points for mounts or roof bars (both sides) A: for 2-door vehicles without roof railing. B: for 4-door vehicles without roof railing. C: for vehicles with roof railing First read and observe the introductory information and safety warnings Mounts or roof bars serve as the b ...

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