1. Brine circulates in a collector coil and draws low temperature energy from the ground, air, bedrock or water.
2. At the heat exchanger (evaporator) the tepid brine in the collector coil meets the ice cold refrigerant in the heat pump which is then heated a few degrees and converted to gas.
3. In the compressor, the pressure is increased thereby raising the temperature of the refrigerant. The heat that is then generated is transferred via a heat exchanger (condenser) to your home’s heating system.
4. Via the condenser, the refrigerant releases the heat to the heating system of your home. In connection with this the refrigerant is cooled.
5. The refrigerant circulates and an expansion valve lowers the pressure and the refrigerant becomes cold again. The process begins again when the refrigerant meets the tepid brine from the collector coil.
¤ The brine is a mixture that cannot freeze, for example alcohol or glycol
¤¤ Modern environmentally sound refrigerants are used e.g. hydrocarbons and carbon dioxide.
