Volkswagen Golf Service & Repair Manual: Charge factor

Volkswagen Golf Service & Repair Manual / Air conditioning system with refrigerant R134a / General notes on air conditioning systems / Characteristics of refrigerant R134a / Charge factor

There must be space both for liquid and vapour in a container. As the temperature rises, the liquid expands. The space occupied by the vapour becomes smaller. Eventually, there will only be liquid in the container. After that time, even a small increase in temperature will result in a very large increase in pressure, since the liquid is seeking to expand further but there is no space for it to do so. The resulting forces are sufficient to burst the container. To prevent containers from being overcharged, regulations governing the storage of compressed gases specify how many kilograms may be charged into a container for every litre of container volume. This charge factor multiplied by the internal volume gives the permissible charge quantity. The charge factor for the refrigerants used in cars is 1.15 kg/l.

Water content

Only very small amounts of water are soluble in liquid refrigerant. On the other hand, refrigerant vapour and water vapour mix in any proportion. ...

Detecting leaks

External damage can cause leaks in the refrigerant circuit. Because a small leak will involve only small quantities of refrigerant, leaks should be checked for using an electronic leak detector or ...

Other materials:

Declaration of conformity
First read and observe the introductory information and safety warnings The individual manufacturer declares herewith that the following products conform, at the time of vehicle production, with the basic requirements and other relevant laws and regulations, including FCC Part 15.19, FCC Par ...

Removing and installing radiator, Golf, Golf SV, Golf Estate
Note Radiator and water radiator for charge air cooling circuit are removed together. Removing – Drain coolant → Chapter. – Remove radiator cow ...

Introduction
This chapter contains information on the following subjects: → Stowage compartment on the driver side → Stowage compartment in the roof console (glasses compartment) → Stowage compartment in the front centre console → Stowage compartment in the front ...