Volkswagen Polo Service & Repair Manual: Refrigerant R134a Environmental Information

Volkswagen Polo Service & Repair Manual / Refrrigerant R134a Servicing / A/C System, General Information / Refrigerant R134a / 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:

Attaching child seat with lower anchoring points (ISOFIX)
Fig. 64 On vehicle seat: different markings identifying the lower anchoring points for child seats First read and observe the introductory information and safety warnings 2 retaining rings, also known as lower anchoring points, are fitted to each outer rear seat. Overview of installation ...

Electric windows – functions
First read and observe the introductory information and safety warnings One-touch opening and closing One-touch opening and closing makes it possible to fully open and close the windows. The individual buttons do not have to be held down to do this. For one-touch closing: pull the button for ...

Cleaning the engine compartment
First read and observe the introductory information and safety warningsThe engine compartment of any motor vehicle is a hazardous area . The engine compartment should be cleaned by a qualified workshop. Corrosion protection could be removed and electrical components damaged if the compartmen ...