流体机械

2010, v.38;No.458(08) 66-72

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地源热泵U型垂直埋管传热特性的研究
Study on Heat-transfer Character of Geothermal Heat Pump Vertical U-tube Ground

王洪利;田景瑞;马一太;董文超;
WANG Hong-li1,TIAN Jing-rui2,MA Yi-tai3,DONG Wen-chao1 (1.Hebei Polytechnic University,Tangshan 063009,China;2.Hebei Polytechnic University,Tangshan 063009,China;3.Tianjin University,Tianjin 300072,China)

摘要(Abstract):

基于ANSYS软件并结合唐山地区气象资料和土壤特性,建立了该地区地源热泵U型埋管非稳态温度场的数学模型并进行了性能分析。不同工况和埋管间距周围温度场的模拟结果表明,该地区最佳埋管间距约为4 m,并确定了给定条件下的热作用半径及土壤特性与热平衡时间的关系。考虑到土壤年净负荷或机组运行多年后净负荷均不平衡,分别对地源热泵机组全年和多年运行对土壤温度的影响进行了模拟。本文为地源热泵设计和施工提供了基础资料。
Based on meteorologic data and soil characteristics of Tanshan area,the Non-steady-state temperature field mathematical model of geothermal heat pump vertical U-tube ground were established and the system performance were also employed.The results of different work condition and U-tube ground range interval show that the optimum tube range interval is about 4m,at the same time,the thermal perturbation radius and the relationship between soil properties and thermal equilibrium time were also found.Taking into account the net load imbalance in the soil,the soil temperature affected by geothermal heat pump vertical U-tube ground were simulated.Some fundamental data were obtained for geothermal heat pump design and construction.

关键词(KeyWords): 地源热泵;U型埋管;温度场;热作用半径;土壤净负荷
geothermal heat pump;U-tube ground;temperature field;thermal perturbation radius;soil net load

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作者(Author): 王洪利;田景瑞;马一太;董文超;
WANG Hong-li1,TIAN Jing-rui2,MA Yi-tai3,DONG Wen-chao1 (1.Hebei Polytechnic University,Tangshan 063009,China;2.Hebei Polytechnic University,Tangshan 063009,China;3.Tianjin University,Tianjin 300072,China)

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