Volkswagen Polo Service & Repair Manual: Refrigerant R134a

Refrigerant R134a Vapor Pressure Table

The vapor pressure table for every refrigerant is published in literature for refrigeration system engineers. This table makes it possible to determine the vapor pres ...

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 ref ...

Other materials:

General Information
The following descriptions also apply to Left Rear Cigarette Lighter -U3-, Right Rear Cigarette Lighter -U7-, Rear Cigarette Lighter -U9-, 12 V Socket 2 -U18-, 12 V Socket 3 -U19-, 12 V Socket 4 -U20-, Cigarette Lighter 2 -U25- and 12 V Socket 5 -U26- if ...

Charge Factor
A vessel must have space for vapor as well as liquid. As the temperature rises, the liquid expands. The space filled with vapor decreases. At a certain point, there will only be liquid in the vessel. Beyond this, even a slight increase in temperature cau ...

AGM Battery
Maintenance-Free Battery with Specific Electrolyte without a Visual Indicator Lead-acid battery, where the electrolyte is fixed in an absorbent glass mat (AGM). The battery is closed and equipped with breather valves. ...