Effects of the geothermal load on the ground temperature recovery in a ground heat exchanger

被引：29

作者：

Baek, Seung Hyo ^{[1
]}

Yeo, Myoung Souk ^{[2
]}

Kim, Kwang Woo ^{[2
]}

机构：

[1] Seoul Natl Univ, Grad Sch, Dept Architecture & Architectural Engn, 1 Gwanak Ro, Seoul 08826, South Korea

[2] Seoul Natl Univ, Coll Engn, Dept Architecture & Architectural Engn, 1 Gwanak Ro, Seoul 08826, South Korea

来源：

ENERGY AND BUILDINGS | 2017年 / 136卷

基金：

新加坡国家研究基金会;

关键词：

Ground coupled heat pump; Ground temperature recovery; Ground heat exchanger; Geothermal load; Recovery time; Soil thermal conductivity; Geothermal load pattern; PUMP SYSTEM; DESIGN; PERFORMANCE; VALIDATION; RESISTANCE; MODEL;

D O I：

10.1016/j.enbuild.2016.11.056

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The effects of the geothermal load on the ground temperature recovery in a ground heat exchanger (GHE) were investigated. A three-dimensional equivalent transient GHE analysis model was developed and validated against measured thermal response test (TRT) data and sandbox reference dataset. The effects of amount of geothermal load, duration of the recovery time per day, and daily geothermal load pattern on the ground temperature recovery were examined. The results showed that decreasing the amount of geothermal load and increasing the recovery time can improve the ground temperature recovery. However, there is little correlation between the daily geothermal load pattern and ground temperature recovery. The effects of the geothermal load on ground temperature recovery were also analyzed under different soil thermal conductivity conditions. The duration of the recovery time significantly influences the ground temperature recovery at low soil thermal conductivity. These results demonstrate the importance of considering the recovery time in the GHEs design stage to reduce the borehole length. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：63 / 72

页数：10

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