Efficiency analysis of borehole heat exchangers as grout varies via thermal response test simulations

被引：35

作者：

Sliwa, T. ^{[1
]}

Rosen, M. A. ^{[2
]}

机构：

[1] AGH Univ Sci & Technol Krakow, Drilling Oil & Gas Fac, Mickiewicz Ave 30, PL-30059 Krakow, Poland

[2] Univ Ontario, Fac Engn & Appl Sci, Inst Technol, 2000 Simcoe St North, Oshawa, ON L1H 7K4, Canada

来源：

GEOTHERMICS | 2017年 / 69卷

关键词：

Borehole heat exchanger; Geoenergetics; Thermal response test; Borehole grout; Energy efficiency; RESOURCES;

D O I：

10.1016/j.geothermics.2017.05.004

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：

Grout is normally used in borehole heat exchangers, in part for separating different water layers. Grout can also enhance heat transfer with the ground when it has high thermal conductivity. In this article, thermal response test results from simulations of borehole heat exchangers are presented. The work is undertaken to enhance understanding and predictions of the heat transfer effectiveness and energy efficiency of borehole heat exchangers as grout varies. The following borehole heat exchanger types are considered: coaxial, single U-tube and double U-tube. The results quantitatively describe the effect of grout on energy efficiency and indicate if it is reasonable to incur the higher costs of using grouts of high thermal conductivity to enhance borehole heat exchanger performance.

引用

页码：132 / 138

页数：7

共 27 条

[1] Distributed thermal response tests on pipe-in-pipe borehole heat exchangers [J].