Thermal response test for ground source heat pump based on constant temperature and heat-flux methods

被引：25

作者：

Yu, Xiaohui ^{[1
,2
]}

Zhang, Yufeng ^{[1
,2
]}

Deng, Na ^{[1
]}

Ma, Hongting ^{[1
]}

Dong, Shengming ^{[1
]}

机构：

[1] Tianjin Univ, Sch Environm Sci & Engn, Tianjin 300072, Peoples R China

[2] Collaborat Innovat Ctr Chem Sci & Engn, Tianjin 300072, Peoples R China

来源：

APPLIED THERMAL ENGINEERING | 2016年 / 93卷

基金：

中国国家自然科学基金;

关键词：

Ground source heat pump; Ground heat exchanger; Thermal response test; Ground temperature profile; Multi-layer cylindrical source model; EXCHANGERS; RESISTANCE; SYSTEMS;

D O I：

10.1016/j.applthermaleng.2015.10.007

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

TRT has been a useful and consolidated tool to determine the ground thermal properties for GSHP. In this paper, six TRTs were carried out to analyze the heat transfer performance of GHE based on constant temperature and heat-flux methods. Vertical temperatures were measured using temperature sensors installed along GHE pipes. A multi-layer cylindrical source model was developed to estimate thermal conductivity distributions in the ground around GHE based on the vertical temperatures. The results showed that the constant temperature method had many advantages in shortening test period, operating stability and test accuracy compared with the traditional constant heat-flux method. The estimated thermal conductivities obtained based on the multi-layer cylindrical source model were consistent with the geological conditions and groundwater aquifer. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：678 / 682

页数：5

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