| 回填材料对土壤热泵U型埋管换热器性能的影响 |
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| 引用本文： | 包强,邓启红,牛润卓.回填材料对土壤热泵U型埋管换热器性能的影响[J].建筑热能通风空调,2007,26(4):64-67. |
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| 作者姓名： | 包强 邓启红 牛润卓 |
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| 作者单位： | 中南大学能源科学与工程学院 |
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| 基金项目： | 国家自然科学基金;教育部跨世纪优秀人才培养计划;霍英东教育基金会高等院校青年教师优选资助课题 |
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| 摘 要： | 本文以能量守恒和质量守恒为基础建立了土壤耦合热泵U型埋管换热器三维非稳态模型,重点研究了回填材料导热率对U型埋管换热器换热性能的影响。结果表明:强化换热型回填材料可以大幅度提高钻井换热器的换热能力,钻井的换热能力随着回填材料导热率的增加而不断提高,但回填材料导热率并非越高越好,而是应该稍高于钻井周围岩土层的导热率。
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| 关 键 词： | 土壤耦合热泵 埋管换热器 回填材料 |
| 文章编号： | 1003-0344（2007）04-064-4 |
| 修稿时间： | 2006-11-29 |
Influence of Backfill in Borehole Heat Exchanger for a Ground Coupled Heat Pump |
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| Bao Qiang,Deng Qihong,Niu Runzhuo.Influence of Backfill in Borehole Heat Exchanger for a Ground Coupled Heat Pump[J].Building Energy & Environment,2007,26(4):64-67. |
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| Authors: | Bao Qiang Deng Qihong Niu Runzhuo |
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| Affiliation: | School of Energy Science and Engineering, Central South University |
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| Abstract: | The objective of this paper is to study the effect of backfill thermal conductivity on vertical ground heat exchanger performance.A numerical model for the simulation of transient heat transfer in vertical ground heat exchanger is presented.The influence of backfill on borehole heat exchanger is investigated.It can be concluded that the utilization of thermally enhanced backfill offer better system performance and the backfill thermal conductivity should be selected according to the local soil thermal properties rather than some certain value. |
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| Keywords: | ground-coupled heat pump borehole heat exchanger backfill |
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