地源热泵的埋管设计方法（Design method of buried pipe for ground source heat pump）.docVIP

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地源热泵的埋管设计方法（Design method of buried pipe for ground source heat pump）.doc

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地源热泵的埋管设计方法（Design method of buried pipe for ground source heat pump）

地源热泵的埋管设计方法（Design method of buried pipe for ground source heat pump） The 1 main steps of the design of ground source heat pump system (1) the building cooling load in summer and winter and the underground heat transfer calculation of building cooling load calculation and load calculation method of conventional air conditioning system, air conditioning system can refer to the relevant design manual, and will not go. Underground heat in summer and winter respectively refers to the soil in the summer heat and winter heat emission from soil absorption. Can be calculated by the following formula [2]: KW (1) KW (2) The Q1 - summer to soil heat emissions, kW Q1 - summer design total cooling load, kW Q2 - winter heat absorbed from soil, kW Q2 - the winter design total heat load, kW COP1 - refrigeration coefficient under the design condition of water source heat pump unit COP2 - heating coefficient under the design condition of water source heat pump unit In general, the sample product of water source heat pump unit are given different import refrigeration capacity, water temperature heating and refrigeration coefficient, heating coefficient, design condition COP1, COP2 should be selected in the sample. If the sample when calculating the design conditions needed, can adopt the method of interpolation calculation. (2) the underground heat exchanger design of this part is the core content of the soil source heat pump system design, mainly including the selection of underground heat exchanger and pipes, diameter, number, length and shaft spacing, pipeline resistance calculation and pump selection etc.. (3) other 2 design of underground heat exchanger 2.1 choose the form of heat exchanger The level of 2.1.1 (horizontal or vertical) (vertical) Based on the survey results, considering the available surface area, local soil type and drilling cost, determination of the heat exchanger adopts the vertical shaft arrangement or horizontal arrangement. Although the level of layout is us