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:

Tyre Pressure Loss Indicator
Fig. 124 In the stowage compartment on the front passenger side: button for the Tyre Pressure Loss Indicator First read and observe the introductory information and safety warnings The Tyre Pressure Loss Indicator uses data from the ABS sensors and other functions to check the speed of rot ...

First aid kit and warning triangle
Fig. 153 In the luggage compartment: holder for the first aid kit Fig. 154 In the luggage compartment. A: Warning triangle under the loading edge, B: Warning triangle in the vehicle tools First read and observe the introductory information and safety warnings First aid kit A first-ai ...

Folding the seat cushion and backrests on the rear bench seat forwards and backwards
Fig. 82 Rear bench seat: folding the rear seat cushion forwards Fig. 83 Rear bench seat: release button ①, red marking ② or release button ③ First read and observe the introductory information and safety warnings The rear seat cushions and backrests can be folded forward to extend t ...