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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:

Side view
Fig. 1 Overview of the right side of the vehicle Positions ③, ④, ⑤ and ⑤ are also at the same position on the left side of the vehicle. Key for : Tank flap Roof aerial Attachment points for the mounts and roof carrier Door release lever Exterior mirrors Jacking p ...

Mechanical controls on the front seats
Fig. 37 Front left seat controls with convenient entry function. Fig. 38 Front right seat controls without convenient entry function. First read and observe the introductory information and safety warnings Front left seat controls with convenient entry function The layout of the controls ...

A/C Refrigerant High Pressure Switch -F23
  Note For switching pressures, removing and installing switches and switch arrangement and version, see vehicle-specific refrigerant circuit. Refer to → Rep. Gr.87.     ...

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