流体机械

2009, v.37;No.450(12) 62-67+18

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地下水渗流对地埋管传热影响的理论分析
Analysis of Effects of Groundwater Advection on Geothermal Heat Exchanger

蔡晶晶;陈汝东;王健;
CAI Jing-jing,CHEN Ru-dong,WANG Jian (Tongji University,Shanghai 201804,China)

摘要(Abstract):

根据有渗流时无限大介质中线热源温度响应的解析解,讨论了在不同地下水流速和土壤热物性条件下,地下水渗流对地埋管与周围土壤的换热影响;并介绍了在地埋管换热器设计中,选择Pe数作为是否应考虑地下水渗流因素的判别条件。
Based on the analytical solution for a line heat source in an infinite domain with groundwater advection,the influence of the groundwater advection on the heat transfer of geothermal heat exchanger is discussed,including different groundwater flow velocities and different thermal properties.In order to determine whether the groundwater flow factor should be considered in the design of geothermal heat exchanger,Peclet Number is introduced to be a distinguishing term.

关键词(KeyWords): 地埋管;地下水渗流;土壤温度场;Pe数
geothermal heat exchanger;groundwater advection;soil temperature field;peclet number

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作者(Author): 蔡晶晶;陈汝东;王健;
CAI Jing-jing,CHEN Ru-dong,WANG Jian (Tongji University,Shanghai 201804,China)

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