| U型管地下换热系统非稳态传热数值模拟 |
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| 引用本文： | 顾中煊,吴玉庭,唐志伟,马重芳.U型管地下换热系统非稳态传热数值模拟[J].工程热物理学报,2006,27(2):313-315. |
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| 作者姓名： | 顾中煊 吴玉庭 唐志伟 马重芳 |
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| 作者单位： | 传热强化与过程节能教育部重点实验室及传热与能源利用北京市重点实验室,环境与能源工程学院,北京工业大学,北京,100022 |
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| 摘 要： | 地下换热器是地源热泵系统重要的组成部分,单U型管是当前广泛使用的地下换热器形式。本文建立了单U型管地下换热器的真实尺寸三维数值模型,通过模拟结果同试验实测数据的对比,验证了模型的正确性。本文随后对单U型管地下换热器在冬季工况下连续运行和间歇运行的换热率进行了数值计算,得出了换热率随时间变化的规律。本文还对连续运行工况下U型管作用半径随时间变化的规律进行了研究。本文得出的结果可以用来指导地源热泵工程的设计。
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| 关 键 词： | 地源热泵 U型管 传热 数值模拟 |
| 文章编号： | 0253-231X(2006)02-0313-03 |
| 修稿时间： | 2005年12月6日 |
NUMERICAL SIMULATION OF HEAT TRANSFER OF A U-TUBE GROUND HEAT EXCHANGER |
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| GU Zhong-Xuan,WU Yu-Ting,TANG Zhi-Wei,MA Chong-Fang.NUMERICAL SIMULATION OF HEAT TRANSFER OF A U-TUBE GROUND HEAT EXCHANGER[J].Journal of Engineering Thermophysics,2006,27(2):313-315. |
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| Authors: | GU Zhong-Xuan WU Yu-Ting TANG Zhi-Wei MA Chong-Fang |
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| Abstract: | Ground heat exchanger is an important component of the Ground Coupled Heat Pump (GCHP) system and a single U-tube is the most common type of ground heat exchanger. In this paper a full-scale 3D numerical model of a single U-tube ground heat exchanger was built. The effectiveness of the model was verified by comparing the computed results with the field test data. The heat extraction rate of a single U-tube of a GCHP operating in heating mode was numerically computed, for both continuous and cyclic operation. The time variation of the heat extraction rate was derived. This paper also studied how the influence radius of a single U-tube changes with time. The results may provide guidance in the design of GCHP systems. |
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| Keywords: | ground coupled heat pump U-tube heat transfer numerical simulation |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
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