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《Journal of Beijing Polytechnic University》 2004-01
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Preparatory Study of Heat Transfer Enhancement of Energy Collector Pipe in GSHP System

WEI Jia-xiang, TANG Zhi-wei, DING Wan-lei, MA Chong-fang (College of Environment and energy Engineering, Beijing University of Technology, Beijing 100022, China; Shandong Lushang Moon Architecture Designing Limited Company, Jinan 250014, China )  
In order to improve the heat transfer efficiency of energy collector pipe, the authors calculate the different energy collectors from the angle of increasing heat transfer efficiency, and compare the calculations with the numeric simulation results. The comparison shows that reducing the pipe radius can improve the heat trasfer efficiency of energy collector. The authors also theoretically analyze the structure of energy collector, types and characteristics of secondary refrigerant and selection of backfilled stuff, and put forward the measures to enhance heat transfer efficiency in GSHP system.
【Fund】: 北京市科委基金资助项目(H021820041120).
【CateGory Index】: TK523
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