Automobile Electrical and Electronic Systems, 5th Edition

Heating ventilation and air conditioning

522

(Figure 13.13). The temperature of the refrigerant at this stage is much higher

than the outside air temperature, hence it gives up its heat via the ns on the

condenser as it changes state back to a liquid.

This high-pressure liquid is then passed to the receiver–drier where any

vapour which has not yet turned back to a liquid is stored, and a desiccant bag

removes any moisture (water) that is contaminating the refrigerant. The high-

pressure liquid is now passed through the thermostatic expansion valve and is

converted back to a low-pressure liquid as it passes through a restriction in the

valve into ...