5.2 Operating principle
GSHP19 ver. 3
1
Evaporator
A
Cooling circuit
2
Compressor
B
Refrigerant circuit
3
Condenser
C
Heating circuit
4
Expansion valve
There are three closed circuits running within or through the heat pump:
● cooling circuit
● refrigerant circuit
● heating circuit.
The heat pump’s operation is based on vaporization and condensation of refrigerant
circulating within the pump.
The cooling circuit is used for collecting heat energy. As the fluid travels along the
circuit, it collects heat energy, which causes the temperature in the fluid to rise. The
fluid completes its circuit by returning to the evaporator and releasing the heat energy
into the refrigerant, which circulates between the evaporator and the condenser.
When the refrigerant is in the evaporator, it is colder than the fluid in the cooling circuit,
allowing he heat energy to transfer from the fluid into the refrigerant. This transfer of
heat raises the temperature of the refrigerant, until it vaporizes.
The gaseous refrigerant is led to a compressor, which compresses it to a high
pressure. As the pressure of the gaseous refrigerant increases, so does its
temperature.
EXES01 2150EN
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