Title: +175=737.001_IK001_Brukermanual for Refra varmepumpe.Produktinformasjon.pdf
Low temperature heat from the ground is conveyed to the evaporator, usually by a flowing fluid. This heat is transferred into the refrigerant within the evaporator, which is several degrees lower in temperature. The absorbed heat causes the refrigerant within the evaporator to vaporize. The vaporized refrigerant moves to the compressor where its pressure and temperature are greatly increased. The electrical energy needed to run the compressor is ultimately absorbed by the refrigerant, and thus adds to its total heat content. The refrigerant exits the compressor as a hot gas, and travels on to the condenser, where it transfers heat to another “fluid” stream. For water- to-air heat pumps that fluid is air. For water-to-water heat pumps that fluid is water. As the refrigerant releases heat it condenses from a vapor to a liquid, and its temperature also decreases. However, the pressure of the liquid refrigerant is still relatively high.