| 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 |
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| 作者姓名： | 贾亚北 王勇 |
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| 作者单位： | 重庆大学三峡库区生态环境教育部重点实验室, 重庆 400045 |
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| 基金项目： | 中央高校基本科研业务费(CDJZR11210001)资助 |
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| 摘 要： | 以实际工程为研究对象,分别建立垂直U型地埋管管群的二维和三维非稳态传热模型. 以Fluent作为计算工具,进行系统运行15年的换热耦合计算,得到不同换热条件下的土壤温度变化曲线. 以三维模型数值计算结果为对比条件,以拟合优度为参照参数,对二维传热模型的应用条件进行了分析.
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| 关 键 词： | 地埋管地源热泵 管群换热器 三维计算模型 二维计算模型 |
| 收稿时间： | 2012-04-06 |
| 修稿时间： | 2012-05-11 |
Comparative analyses on 2D and 3D buried tube-group heat transfer models in GCHP system |
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| Authors: | JIA Ya-Bei WANG Yong |
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| Institution: | Key Laboratory of the Three Gorges Reservoir Regions Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, China |
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| Abstract: | 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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| Keywords: | ground-coupled heat pump pipe-group heat exchangers 3D calculation model 2D calculation model |
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