7
-
High pressure (liquid and warm)
8
-
Low pressure (liquid and cool)
9
-
Low pressure (gaseous and cold)
10
-
High pressure (gaseous and hot)
11
-
Front air conditioning system
12
-
Additional air conditioning system
The refrigerant required for the rear circuit is taken in liquid form from the front circuit before the fixed orifice tube and passed to the expansion valve (5) of the rear circuit.
The expansion valve controls the quantity of refrigerant entering the additional evaporator (4) depending on the temperature and pressure in the additional evaporator.
The refrigerant leaves the additional evaporator in the gaseous state and is passed back into the front circuit through the expansion valve.
Overview - air conditioning system
