Water from high to low, heat from high-temperature objects passed to Low-temperature objects, this is the natural law. However, in the real life, in order to agricultural irrigation, water and other needs of water, people use the pump to the high level from the low.
Again, in today's increasingly tense energy, in order to recover the heat from the low temperature heat that is usually discharged into the atmosphere, the low temperature hot water discharged into the river, the heat pump is used to transfer heat energy from a cryogenic object to a High-temperature object, and then a High-temperature object to add hot water or heating to make the heat fully utilized. The working principle of the heat pump system is consistent with that of the refrigeration system. In order to understand the working principle of the heat pump, first of all understand how the refrigeration system works. Refrigeration system (compressed refrigeration) generally consists of four parts: compressors, condensers, throttle valves, evaporator. Its working process is: low temperature and low pressure liquid refrigerant (such as Freon), first in the evaporator (such as air-conditioning indoor machine) from high-temperature heat source (such as ambient air) endothermic and gasification into low-pressure vapor. The refrigerant gas is then compressed into a high-temperature high-pressure vapor in the compressor, which is cooled by a low-temperature heat source (e.g. cooling water) in the condenser and condensed into a high-pressure liquid. The throttle element (capillary, thermal expansion valve, electronic expansion valve, etc.) is throttled into low temperature and low pressure liquid refrigerant. This completes a refrigeration cycle.
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