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U型地埋管换热器热短路特性研究 被引量:4

Parametric Analysis of Thermal interference for Vertical U-Tube Geothermal Heat Exchangers
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摘要 针对竖直U型埋管地热换热器管间热短路问题,建立了U型埋地换热器三维传热模型,对地源热泵竖直型埋管地热换热器的热短路现象进行了量化分析,并对影响热短路的主要参数进行了模拟分析。研究表明,增大支管间距可减小热短路现象,但在加大钻井直径困难的条件下,增大管间距受限,所以效果不显著;但不同回填材料的导热系数对热短路的影响较大。因此,减小U型管地热换热器支管间热短路的有效措施是合理选择回填材料的导热系数。 According to the thermal interference for Vertical U-Tube Geothermal Heat Exchangers, The three-dimensionalmodel was established for heat exchanger, quantitative analysis of Thermal interference for Vertical U-Tube Geothermal Heat Exchangers, simulation analyzed the main parameters of thermal interference. Thermal conductivity factor of backfill material have higher impact for the thermal interference.
出处 《制冷与空调(四川)》 2009年第3期59-63,共5页 Refrigeration and Air Conditioning
关键词 地源热泵 U型管 热短路 有限体积法 GSHP U-Tube Thermal interference the finite volume model
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