Influence of debonding in ground heat exchangers used with geothermal heat pumps

被引：59
|
作者：
Philippacopoulos, AJ [1 ]
Berndt, ML [1 ]
机构：
[1] Brookhaven Natl Lab, Dept Energy Sci & Technol, Upton, NY 11973 USA
来源：
GEOTHERMICS | 2001年 / 30卷 / 05期
关键词：
geothermal heat pumps; grout; debonding; thermal resistance; heat transfer;
D O I：
10.1016/S0375-6505(01)00011-6
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
Debonding in ground heat exchangers used with geothermal heat pumps may occur for a variety of reasons, such as shrinkage of the backfill materials or surrounding formation, improper grouting and thermal mismatch. The effect of thermal contact resistance on the heat conduction due to debonding in ground heat exchangers was investigated using a set of one-dimensional simplified analytical models as well as two-dimensional finite element models. From the cases studied, debonding at the backfill/pipe interface was found to be of greater significance than debonding between grout and surrounding formation. (C) 2001 CNR. Published by Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：527 / 545
页数：19
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