文档介绍：地源热泵岩土热响应测试影响因素分析*

王沣浩 1 颜亮 2 冯琛琛 1 王新轲 1

(1. 西安交通大学建筑节能研究中心,西安 710049; 2. 中国建筑上海设计研究院有限公司, 上海 200063)

摘要建立了地源热泵岩土热物性现场测试系统的三维数值模型,基于所建数值模型分析了测试时间、
舍弃初始小时数、钻孔半径、岩土体初始温度、加热器输入功率等因素对岩土热响应测试结果的影响。研
究结果表明:对于柱热源模型,随着钻孔尺寸的增大,辨识得到的导热系数越小;采用参数估计法作为辨
识方法时,岩土初始温度的测试精度对辨识结果有较大影响。测试得到的导热系数有 6%~18%的偏差。
关键词地源热泵热响应测试影响因素数值模拟

ANALYSIS OF INFLUENCING FACTORS ON THERMAL RESPONSE TEST IN
GROUND SOURCE HEAT PUMP

Wang Fenghao 1 Yan Liang 2 Feng Chenchen 1 Wang Xinke 1
(1. Building Energy Research Center, Xi’an Jiao tong University, Xi’an 710049, China; 2. China Shanghai Architectural Design &
Research Institute Co., Ltd, Shanghai 200063,China)

Abstract A three dimensional numerical model of ground source heat pump system was established. the effects
of testing time, starting time, borehole radius, initial ground temperature and heat injection rate on identified
thermal conductivity of the deep ground soil were analyzed based on the numerical model. The simulation results
showed that the identified thermal conductivity decreases with an increase in borehole radius based on
column-source method. For parameter estimation, the measuring accuracy of the initial temperature of the deep
ground soil has greater effect on identified thermal conductivity.
Keywords Ground source heat pump Thermal response test Influencing factor Numerical simulation