| 增强地源热泵竖直埋管地下换热器换热性能的研究 |
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| 引用本文： | 刘冬生,孙友宏,庄迎春.增强地源热泵竖直埋管地下换热器换热性能的研究[J].吉林大学学报(地球科学版),2004,34(4):648-652. |
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| 作者姓名： | 刘冬生 孙友宏 庄迎春 |
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| 作者单位： | 吉林大学,建设工程学院,吉林,长春,130026;浙江大学,土木工程学系,浙江,杭州,310027 |
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| 基金项目： | 中国地质调查局科研项目 |
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| 摘 要： | 地下换热器换热性能直接影响到地源热泵系统的初投资和运行成本.地下换热器可分为单U型、双U型和1 2型三类.采用非稳态法对膨润土、水泥 砂两类回填材料进行了室内实验;在相同的边界条件下,采用扶正器和定位器施工可以保证下管,并能降低钻孔内热阻.因地制宜地选择埋管形式,采用稳定、高效的回填材料和减小热短路是提高地下换热器换热性能的必要途径.
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| 关 键 词： | 竖直埋管 地源热泵 地下换热器 |
| 文章编号： | 1671-5888(2004)04-0648-05 |
| 修稿时间： | 2004年1月8日 |
The research on improving heat exchanging performance of vertical buried ground heat exchangers of ground source heat pump |
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| LIU Dong-sheng.The research on improving heat exchanging performance of vertical buried ground heat exchangers of ground source heat pump[J].Journal of Jilin Unviersity:Earth Science Edition,2004,34(4):648-652. |
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| Authors: | LIU Dong-sheng |
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| Institution: | LIU Dong-sheng~ |
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| Abstract: | The performance of ground heat exchanger directly influences first investment and running costs of ground source heat pump system. Ground heat exchanger can be divided into three types known as single U-type, double U-type and 1 plus 2-type. Two sorts of backfills, bentonite and cement boned sand, have been tested in the laboratory for the system by unstable state method. Under the same boundary condition, the erection-aid and spacer can be used to easily down pipes and reduce the heat resistance in the hole. According to local conditions, it is necessary to adopt stable and highly efficient backfilled material and reduce heat cutting-out in order to improve the performances of ground heat exchanger. |
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| Keywords: | vertical buried pipe ground source heat pump ground heat exchanger |
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