Development and validation of a three-dimensional numerical model for predicting the ground temperature distribution

被引：11
作者：
Ji, Yichen [1 ]
Qian, Hua [1 ]
Zheng, Xiaohong [1 ]
机构：
[1] Southeast Univ, Sch Energy & Environm, Jiangsu Prov Key Lab Solar Energy Sci & Technol, Key Lab Energy Thermal Convers & Control,Minist E, Nanjing 210096, Jiangsu, Peoples R China
来源：
ENERGY AND BUILDINGS | 2017年 / 140卷
关键词：
Ground source heat pump (GSHP); Borehole heat exchanger (BHE); Ground temperature distribution; Numerical simulation; HEAT-PUMP SYSTEM; EXCHANGER; BOREHOLE; PERFORMANCE; SIMULATION;
D O I：
10.1016/j.enbuild.2017.01.079
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
Predicting the long term ground temperature distribution is essential in the design and application of ground source heat pumps (GSHPs). An improved 3-D line source model is developed to calculate the soil temperature distribution and inlet/outlet fluid temperature to reduce the computation load. Analytical solutions are applied inside the borehole heat exchangers (BHEs) to integrate the ground temperature distribution with the coefficient of performance (COP) of GSHPs. In order to improve the computational stability and speed of 3D numerical modeling, the Alternating Direction Implicit (ADI) method is used to discretize the unsteady energy equations. The convective heat transfer is set as the floor boundary condition to account for the effects of air. This model is validated by experiment data in literature. Results have shown that this model can accurately and quickly predict the long term ground temperature distribution, especially in areas where apparent soil stratification exists. (C) 2017 Elsevier B.V. All rights reserved.
引用
收藏
页码：261 / 267
页数：7
相关论文
共 20 条
[1]   Efficient numerical modeling of borehole heat exchangers [J].
Al-Khoury, R. ;
Koelbel, T. ;
Schramedei, R. .
COMPUTERS & GEOSCIENCES, 2010, 36 (10) :1301-1315
[2]   Reference data sets for vertical borehole ground heat exchanger models and thermal response test analysis [J].
Beier, Richard A. ;
Smith, Marvin D. ;
Spitler, Jeffrey D. .
GEOTHERMICS, 2011, 40 (01) :79-85
[3]   Analysis on the transient heat transfer process inside and outside the borehole for a vertical U-tube ground heat exchanger under short-term heat storage [J].
Dai, L. H. ;
Shang, Y. ;
Li, X. L. ;
Li, S. F. .
RENEWABLE ENERGY, 2016, 87 :1121-1129
[4]   Indoor thermal comfort characteristics under the control of a direct expansion air conditioning unit having a variable-speed compressor and a supply air fan [J].
Deng Shiming ;
Li Zheng ;
Qu Minglu .
APPLIED THERMAL ENGINEERING, 2009, 29 (11-12) :2187-2193
[5]   Temperature distributions in boreholes of a vertical ground-coupled heat pump system [J].
Esen, Hikmet ;
Inalli, Mustafa ;
Esen, Yuksel .
RENEWABLE ENERGY, 2009, 34 (12) :2672-2679
[6]   A study on the performance of a geothermal heat exchanger under coupled heat conduction and groundwater advection [J].
Fan, Rui ;
Jiang, Yiqiang ;
Yao, Yang ;
Shiming, Deng ;
Ma, Zuiliang .
ENERGY, 2007, 32 (11) :2199-2209
[7]   An analysis of heat flow through a borehole heat exchanger validated model [J].
Florides, Georgios A. ;
Christodoulides, Paul ;
Pouloupatis, Panayiotis .
APPLIED ENERGY, 2012, 92 :523-533
[8]  
Goran Hellstrom, 1991, THESIS LUND U
[9]  
Incropera F.P., 1990, FUNDAMENTALS HEAT MA
[10]   Field-scale evaluation of the design of borehole heat exchangers for the use of shallow geothermal energy [J].
Kim, Seong-Kyun ;
Bae, Gwang-Ok ;
Lee, Kang-Kun ;
Song, Yoonho .
ENERGY, 2010, 35 (02) :491-500
12