Ground source heat pump air source water differences and their characteristics –
Source heat pump works Is the use of water and earth energy (ground water, soil or surface water) exchange as a water source heat pump hot and cold and heat sources, geothermal energy in the winter to the heat, "taken" out of the supply of indoor heating, this time to be able to "heat"; summer, the interior heat extracted from the release into the groundwater, soil or surface water, this time to be able to as a "cold source." High efficiency energy-saving, economic environment, safe and reliable, can run automatically and so on.
Ground source heat pump, compared with air source heat pump, what are the advantages
Ground source heat pump, compared with air source heat pump has many advantages: (1) Annual temperature fluctuations small. Higher temperature than the air temperature in winter and summer than the air temperature is low, so ground source heat pump heating, refrigeration coefficient than air source heat pump, and can be higher than 40% of the energy and cost savings can be 40%. (2) Winter does not need defrosting, reducing the loss of frosting and defrosting. (3) to the role of the source has better storage.
Classification of ground source heat pump systems and their respective advantages and disadvantages
1) Groundwaterheatpumps, GWHPs groundwater heat pump system, also known as the deep recharge water source heat pump system. Group through the construction of a pumping groundwater out through the secondary heat exchanger or directly sent to the water source heat pump units, by extracting heat or release heat, by the injection well back underground irrigation group.
Its biggest advantage is very economical, small footprint, but must meet the following criteria in mind: good water quality; water-rich; recharge reliable; meet the standards.
2) (a) Horizontalground-coupledheatpump level of heat pump system (b) Verticalboreholeground-coupledheatpump vertical heat pump system. (A) and (b) two ways subsumed within the Ground-coupleheatpumpsGCHPs (ground coupled heat pump system), also known as ground source heat pump system buried type. There is another term called Groundheatexchanger underground heat exchangers of ground source heat pump system. The closed system approach, through the middle of medium (usually water or antifreeze in the water added) as a heat carrier to the middle of media in the buried soil within the closed circulation loop in order to achieve the heat exchange with earth soil purposes.
For vertical pipe system, its advantages are: less land occupation, less piping and pump power, the drawback is higher drilling costs; for horizontal pipe system, its advantages include: installation costs than lower vertical pipe system, widely used, the user is easy to grasp, its disadvantages are: area and are subject to large surface temperature, pump large power.
3) Surface-waterheatpumps, SWHPs surface water heat pump system. Collected through direct or indirect heat transfer means, including use of the river, river, lake, reservoir water and sea water as a heat pump source. Way attributable to the water source heat pump.
Advantages are: 10 meters or deeper in the lake, providing direct 10 cooling, underground pipe system investment than smaller, lower energy consumption, water pump, high reliability, low maintenance requirements, low operating costs In warm areas, the lake can do heat, its disadvantages are: in the shallow lake, the coil can easily be destroyed, due to large temperature changes, will reduce the unit's efficiency.
4) Standingcolumnwellheatpumps, SCW single well for bustling, well, that is, single-tube vertical heat pump, in a foreign country often referred to as "hot wells." This way, the water table above sets as steel jacket, and pore size consistent; groundwater level following the natural holes, without any cementing facility.
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