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Volkswagen Polo Service & Repair Manual: Refrigerant R134a Environmental Information

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).
R134a is a fluorocarbon and contains no chlorine.
R134a has a shorter atmospheric life span than refrigerant R12.
R134a does not damage the ozone layer. The ozone depletion potential is zero.
The greenhouse potential of R134a (Global Warming Potential = GWP) is approximately 1430 (the GWP of carbon dioxide is 1).
The global warming effect of R134a is ten times less than that of refrigerant R12.
   
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 ...

Refrigerant R134a Characteristics
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Other materials:

Stowage compartment in the front passenger footwell
Fig. 99 In the front passenger footwell: stowage compartment for high-visibility waistcoat First read and observe the introductory information and safety warnings Opening and closing the high-visibility waistcoat stowage compartment To open, grip the handle (arrow) and pull the cover out of ...

Changing a blown fuse
Fig. 174 A blown fuse Fig. 175 Removing or fitting a fuse using the plastic pliers ① First read and observe the introductory information and safety warnings Preparation Switch off the ignition, the lights and all electrical consumers. Open the appropriate fuse box . Detecti ...

Tires, Damage from Low Tire Pressure
The most common causes of failure are small external damage, a defective valve or a leaky rim due to corrosion or damage.     Separation of Carcass and Rubber Strong heating due to driving w ...

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