Comparative Analysis on Soil Temperature Fields of Inner and Outside Tube Groups in Stably Operated GSHP System
Based on a practical project in shanghai, this paper will give a yearly test on single U-shaped ground heat exchanger of ground-source heat pump in central air conditioning system, and analyzes the change of surface ground temperature field, inner ground temperature field and outer ground temperatur...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | zho |
| Published: |
Journal of Refrigeration Magazines Agency Co., Ltd.
2013-01-01
|
| Series: | Zhileng xuebao |
| Subjects: | |
| Online Access: | http://www.zhilengxuebao.com/thesisDetails#10.3969/j.issn.0253-4339.2013.02.075 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850233319091863552 |
|---|---|
| author | Liu Yefeng Zhang Feng Yang Biao Wang Hua |
| author_facet | Liu Yefeng Zhang Feng Yang Biao Wang Hua |
| author_sort | Liu Yefeng |
| collection | DOAJ |
| description | Based on a practical project in shanghai, this paper will give a yearly test on single U-shaped ground heat exchanger of ground-source heat pump in central air conditioning system, and analyzes the change of surface ground temperature field, inner ground temperature field and outer ground temperature field of the pipes. The test results show that: throughout the year , temperature fluctuation is larger in the shallow soil (more than 25m depth）which is outside the tube group , and time of the highest temperature of the shallow soil appears later than that on the ground . In the inside tube group, the soil temperature will increase along with the system’s continuous and steady operation. Thus, it makes the temperature difference smaller between the surface of the ground heat exchanger and soil temperature around, which leads to the heat exchange capacity decline. Through the contrast analysis，this paper also found that ,for buildings where ground source heat pump is used and its cooling load is greater than the heating load ， the impact of the system's continuous and steady operation on the heat transfer between buried pipes and soil is significantly higher in the summer than that in the winter. At the same time, the experiment results prove that, increasing borehole spaceand intermittent operation of the ground source heat pump system are very important to enhance the heat exchange between the buried tube heat exchanger and soil. |
| format | Article |
| id | doaj-art-e406cfb31b954e61a2fbfdf6d47f9b55 |
| institution | OA Journals |
| issn | 0253-4339 |
| language | zho |
| publishDate | 2013-01-01 |
| publisher | Journal of Refrigeration Magazines Agency Co., Ltd. |
| record_format | Article |
| series | Zhileng xuebao |
| spelling | doaj-art-e406cfb31b954e61a2fbfdf6d47f9b552025-08-20T02:02:57ZzhoJournal of Refrigeration Magazines Agency Co., Ltd.Zhileng xuebao0253-43392013-01-013466517794Comparative Analysis on Soil Temperature Fields of Inner and Outside Tube Groups in Stably Operated GSHP SystemLiu YefengZhang FengYang BiaoWang HuaBased on a practical project in shanghai, this paper will give a yearly test on single U-shaped ground heat exchanger of ground-source heat pump in central air conditioning system, and analyzes the change of surface ground temperature field, inner ground temperature field and outer ground temperature field of the pipes. The test results show that: throughout the year , temperature fluctuation is larger in the shallow soil (more than 25m depth）which is outside the tube group , and time of the highest temperature of the shallow soil appears later than that on the ground . In the inside tube group, the soil temperature will increase along with the system’s continuous and steady operation. Thus, it makes the temperature difference smaller between the surface of the ground heat exchanger and soil temperature around, which leads to the heat exchange capacity decline. Through the contrast analysis，this paper also found that ,for buildings where ground source heat pump is used and its cooling load is greater than the heating load ， the impact of the system's continuous and steady operation on the heat transfer between buried pipes and soil is significantly higher in the summer than that in the winter. At the same time, the experiment results prove that, increasing borehole spaceand intermittent operation of the ground source heat pump system are very important to enhance the heat exchange between the buried tube heat exchanger and soil.http://www.zhilengxuebao.com/thesisDetails#10.3969/j.issn.0253-4339.2013.02.075ground source heat pumpsingle U-shaped ground heat exchangerheat exchange capacityintermittent operation |
| spellingShingle | Liu Yefeng Zhang Feng Yang Biao Wang Hua Comparative Analysis on Soil Temperature Fields of Inner and Outside Tube Groups in Stably Operated GSHP System Zhileng xuebao ground source heat pump single U-shaped ground heat exchanger heat exchange capacity intermittent operation |
| title | Comparative Analysis on Soil Temperature Fields of Inner and Outside Tube Groups in Stably Operated GSHP System |
| title_full | Comparative Analysis on Soil Temperature Fields of Inner and Outside Tube Groups in Stably Operated GSHP System |
| title_fullStr | Comparative Analysis on Soil Temperature Fields of Inner and Outside Tube Groups in Stably Operated GSHP System |
| title_full_unstemmed | Comparative Analysis on Soil Temperature Fields of Inner and Outside Tube Groups in Stably Operated GSHP System |
| title_short | Comparative Analysis on Soil Temperature Fields of Inner and Outside Tube Groups in Stably Operated GSHP System |
| title_sort | comparative analysis on soil temperature fields of inner and outside tube groups in stably operated gshp system |
| topic | ground source heat pump single U-shaped ground heat exchanger heat exchange capacity intermittent operation |
| url | http://www.zhilengxuebao.com/thesisDetails#10.3969/j.issn.0253-4339.2013.02.075 |
| work_keys_str_mv | AT liuyefeng comparativeanalysisonsoiltemperaturefieldsofinnerandoutsidetubegroupsinstablyoperatedgshpsystem AT zhangfeng comparativeanalysisonsoiltemperaturefieldsofinnerandoutsidetubegroupsinstablyoperatedgshpsystem AT yangbiao comparativeanalysisonsoiltemperaturefieldsofinnerandoutsidetubegroupsinstablyoperatedgshpsystem AT wanghua comparativeanalysisonsoiltemperaturefieldsofinnerandoutsidetubegroupsinstablyoperatedgshpsystem |