Arrangement Strategy of Ground Heat Exchanger with Groundwater

The orientation strategy of side pipe and the heat transfer performance of six ground heat exchangers （GHEs） were optimized by numerical simulation, with soil being treated as a porous medium. An experiment on the heat transfer of four GHEs was carried out in 2010. Results indicate that the velocity...

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Bibliographic Details
Published inTransactions of Tianjin University Vol. 18; no. 4; pp. 291 - 297
Main Author 李太禄 朱家玲 张伟
Format Journal Article
LanguageEnglish
Published Heidelberg Tianjin University 01.08.2012
Subjects
Engineering
Humanities and Social Sciences
Mechanical Engineering
multidisciplinary
Science
传热性能
地下水
埋管换热器
多孔介质
数值模拟
最大相对误差
热交换器
种植面积
ground heat exchanger
ground source heat pump
groundwater
geothermics
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Summary:The orientation strategy of side pipe and the heat transfer performance of six ground heat exchangers （GHEs） were optimized by numerical simulation, with soil being treated as a porous medium. An experiment on the heat transfer of four GHEs was carried out in 2010. Results indicate that the velocity field is disturbed by GHEs. The optimal orientation strategy of side pipe is that the upward pipe is located upstream and the downward pipe down- stream. The space between GHEs should be appropriately adjusted, depending on the direction and flow velocity. Groups of GHEs should be installed perpendicular to the mainstream in a single row, but if the acreage does not meet the requirements, GHEs should be installed in staggered multiple rows. Fewer GHEs parallel to the mainstream strengthen the heat transfer. Moreover, numerical results agree well with the test data, with the maximum relative error being less than 7.7%.
Bibliography:12-1248/T
The orientation strategy of side pipe and the heat transfer performance of six ground heat exchangers （GHEs） were optimized by numerical simulation, with soil being treated as a porous medium. An experiment on the heat transfer of four GHEs was carried out in 2010. Results indicate that the velocity field is disturbed by GHEs. The optimal orientation strategy of side pipe is that the upward pipe is located upstream and the downward pipe down- stream. The space between GHEs should be appropriately adjusted, depending on the direction and flow velocity. Groups of GHEs should be installed perpendicular to the mainstream in a single row, but if the acreage does not meet the requirements, GHEs should be installed in staggered multiple rows. Fewer GHEs parallel to the mainstream strengthen the heat transfer. Moreover, numerical results agree well with the test data, with the maximum relative error being less than 7.7%.
ground source heat pump; ground heat exchanger; groundwater; geothermics
ISSN:1006-4982
1995-8196
DOI:10.1007/s12209-012-1906-3