The Heat Pump Cycle
The Heat Pump Cycle is built up of 4 Phases.
Phase 1- Evaporation:
By means of a heat exchanger, the liquid refrigerant extracts renewable energy from the heat source (air, ground or water) and evaporates the refrigerant into a gas.
Phase 2 - Compression:
By the introduction of electrical energy, the now gaseous, but still cold refrigerant, is compressed in a compressor and thus heated. The refrigerant leaves the compressor as a hot gas.
Phase 3 - Liquefying/ Condensing:
The hot gas now reaches the condenser and transfers energy into the heating system. During this energy exchange the gas condenses and leaves the condenser as warm fluid refrigerant.
Phase 4 - Decompression:
The warm fluid refrigerant is now transported to the expansion valve. As the refrigerant passes through the expansion valve, a significant reduction in pressue lowers the refrigerant temperature without any loss of energy. The cold fluid refridgerant is then reintroduced into the evaporator and the cycle begins again.