Evaluation of the impact of the thermal shunt effect on the U-pipe ground borehole heat exchanger performance

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• 作者：Stanislawa Sandler ; ^{stanislawa.sandler@pwr.edu.pl} ; Bartosz Zajaczkowski ; Boguslaw Bialko ; Ziemowit M. Malecha
• 关键词：Borehole heat exchangers ; Thermal shunt effect
• 刊名：Geothermics
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：65
• 期：Complete
• 页码：244-254
• 全文大小：3145 K
• 卷排序：65

文摘

Eliminating thermal shunting does not affect the average borehole wall temperature. TSE increases with greater borehole depth, pipe diameter and pipe-to-pipe spacing. Pipes arrangement affects strongly fluid temperature change in shallow U-pipes. Pipes arrangement has great impact on elimination of TSE in deep U-pipes. U-pipes with depth greater than 100 m are not economically viable.