Numerical simulation and experimental validation of a vertical U-tube ground heat exchanger

被引：0
|
作者：
Gao, Yike [1 ]
Gao, Yan
Yu, Yong
Lin, Xinxing
机构：
[1] Beijing Univ Civil Engn & Architecture, Beijing Key Lab Green Bldg & Energy Efficient Tec, Beijing 100044, Peoples R China
来源：
ENERGY DEVELOPMENT, PTS 1-4 | 2014年 / 860-863卷
基金：
中国国家自然科学基金;
关键词：
ground heat exchanger (GHE); numerical simulation; experimental verification;
D O I：
10.4028/www.scientific.net/AMR.860-863.709
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：
Vertical U-tube ground heat exchanger (GHE) is a key component in geothermal energy utilization systems like ground source heat pump (GSHP). This paper used a two-dimensional transient mathematical model for predicting the heat extraction rate of a vertical U-tube GHE, which also took into account the temperature distribution under the ground. Furthermore the modelling predictions were validated using experimental data. The experimental validation on the model was performed in a GSHP system with a double U-tube GHE, which was of 55m depth. For temperature distribution under the ground, the absolute error and relative error between experiment and simulation are within 0.62 degrees C and 3.71 %. Simulation results agreed well with the experimental results that validate the feasibility of the mathematical model.
引用
收藏
页码：709 / +
页数：3
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