收稿日期: 2012-04-06
修回日期: 2012-05-11
网络出版日期: 2012-05-11
基金资助
中央高校基本科研业务费(CDJZR11210001)资助
Comparative analyses on 2D and 3D buried tube-group heat transfer models in GCHP system
Received date: 2012-04-06
Revised date: 2012-05-11
Online published: 2012-05-11
贾亚北 , 王勇 . 地埋管地源热泵系统二维和三维管群换热模型的对比分析[J]. 中国科学院大学学报, 2013 , 30(3) : 311 -316 . DOI: 10.7523/j.issn.1002-1175.2013.03.005
Choice of a heat transfer model for buried tube-group heat exchangers (GHEs) is the key to accurate calculation of the heat exchange of GHEs in ground-coupled heat pump (GCHP) system. Based on practical projects, the 2D and 3D unsteady heat transfer models of vertical U-tube GHEs are constructed. With Fluent as a computational tool,the heat coupled calculations for a period of 15 years are carried out and soil temperature variation curves are obtained. By taking the 3D model numerical results as benchmark and goodness-of-fit as reference parameter, application conditions for the 2D model are analyzed.
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