Performance study of a ground heat exchanger based on the multipole theory heat transfer model.
发布时间：2023-04-22
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- 论文类型：
- 文章
- 第一作者：
- 胡平放
- 合写作者：
- 於仲义,朱娜,雷飞,袁旭东
- 发表刊物：
- Energy and Buildings
- 收录刊物：
- SCI
- 所属单位：
- 华中科技大学
- 刊物所在地：
- China
- 学科门类：
- 工学
- 一级学科：
- 土木工程
- 项目来源：
- National Natural Science Foundation of China (NSFC)
- 文献类型：
- J
- 卷号：
- 65
- 页面范围：
- 231-241
- ISSN号：
- 0378-7788
- 关键字：
- Ground source heat pump;Ground heat exchanger;Multipole model;Thermal effectiveness coefficient
- DOI码：
- 10.1016/j.enbuild.2014.02.061
- 发表时间：
- 2013-11-05
- 影响因子：
- 7.201
- 摘要：
- This study proposes intermittent operation strategies of a hybrid ground-source heat pump (HGSHP) system with double-cooling towers. The program aims at solving the problem of soil heat accumulation and optimizing the heat pump systems, that is, operating efficiently while reducing operating costs. The annual dynamic load of a hotel in Wuhan was calculated by Designer's Simulation Toolkit (DeST) software, and a GSHP system of the hotel was designed. The HGSHP model was constructed by TRNSYS. On the basis of hotel load patterns, four operating conditions were designed for this system including one continuous condition and three intermittent conditions conducted 20 years simulation. Several performance parameters of the HGSHP under four operating conditions were studied. These parameters included the following: average soil temperature, energy consumption, electricity fees reduction and investment payback period. Simulation results indicated that the proposed intermittent operation strategies evidently alleviated soil heat accumulation. The optimal intermittent operating condition that favors both energy consumption reduction and soil temperature recovery was found. For hotel buildings in cooling-dominated areas, the third intermittent operating condition was the optimal one among the three conditions, with an investment payback period of three years.