A review of methods to evaluate borehole thermal resistances in geothermal heat-pump systems
A review of methods to evaluate borehole thermal resistances in geothermal heat-pump systems
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DOI：
10.1016/j.geothermics.2010.03.003
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发表时间：
2010-06-01
期刊：
影响因子：
3.9
通讯作者：
Beauchamp, Benoit
中科院分区：
文献类型：
--
作者：
Lamarche, Louis;Kajl, Stanislaw;Beauchamp, Benoit
在土壤源热泵（GSHP）系统的设计中，流体到土壤的热传递受流体与钻孔表面之间的钻孔热阻以及钻孔内两根（或四根）管道之间的干扰热阻的影响。一些作者已经提出了评估这些热阻的经验和理论关系式以及通过实验评估它们的方法。本文对不同的方法进行了比较，并提出了评估热阻的良好实践方法。还研究了不同方法对换热器设计的影响。采用二维和完全三维数值模拟来评估不同的方法。还提出了一种从现场试验评估钻孔热阻的新方法。（C）2010爱思唯尔有限公司。保留所有权利。
In the design of a ground-source heat pump (GSHP) system, the heat transfer from the fluid to the ground is influenced by the thermal borehole resistance between the fluid and the borehole surface and also by the interference resistance between the two (or four) pipes inside the borehole. Several authors have proposed empirical and theoretical relations to evaluate these resistances as well as methods to evaluate them experimentally. The paper compares the different approaches and proposes good practice to evaluate the resistances. The impact of the different approaches on the design of heat exchanger is also examined. Two-dimensional and fully three-dimensional numerical simulations are used to evaluate the different methods. A new method is also proposed to evaluate the borehole resistances from in situ tests. (C) 2010 Elsevier Ltd. All rights reserved.