D – 508 C – 07/02 D – EN pag. 23/36
Before leaving the condensing section, the liquid refrigerant is led into the sub-cooler where it is cooled below its
saturation temperature, thus compensating for the pressure drop along the liquid line and improving the capacity of the
evaporator.
After leaving the sub-cooler, the liquid refrigerant enters the liquid receiver, where the exceeding charge is accumulated
during the “cooling mode” in order to compensate for the different volume (refrigerant side) between the coil condenser
and the heat recovery condenser. The liquid refrigerant goes through the filter dryer, where any existing particles of
humidity are removed, and then through the expansion valve where the expansion of the refrigerant takes place.
At that point, there will be a mixture of low-pressure liquid and gas refrigerant which enters the evaporator and takes the
heat load from the chilled water, thus completing the process and allowing a new cycle to start.
Refrigerant circuit – EWAP-AJYNN – EWAP-AJYNN/A
Y6
Y6
WL2
ST2
EVAPORATOR
WL1
ST1
