摘要
地埋管热泵是开发利用浅层地温能的一种方式,土壤温度场在地源热泵运行前后的分布情况,是地埋管热泵计中考虑的重要因素。文章在南京典型地埋管热泵工程布设监测孔,分别在能源桩和距离能源桩1.2 m、2.1 m、3 m处不同层位埋设监测设备,分析地温场的时空演变规律,得到热量的传递情况和温度的变化规律,并采用多元回归分析方法拟合地温场的变化方程,得到了能源桩地温随时间和深度的变化方程以及地温随时间和距离的变化方程。结果显示,随着距能源桩水平距离的增加,温度变化减小;随着深度的增加,土壤温度的影响范围减小,热量传递速率逐渐降低。
Ground-Source Heat Pumps（ GSHP） are often used to exploit the shallow geothermal energy. The designer of GSHP should take into account the variation of the ground temperature field after the operation of GSHP. In this manuscript,in order to analyze the spatial-temporal evolution of the ground temperature field,the bored concrete pile with GSHP and three observation wells（ 1. 2 m,2. 1 m,3 m） were all equipped with temperature sensors. The results demonstrate that the variations in temperature are smaller with the increasing of the horizontal distance from the bored concrete pile; the influence range of the underground soil temperature decreases and the heat transfer rate gradually decelerates as the increase of the depth. The variation equation of ground temperature with time and depth of energy pile and the change equation of ground temperature with time and distance were obtained by multiple regression analysis.
出处
《水文地质工程地质》
CAS
CSCD
北大核心
2017年第2期178-183,共6页
Hydrogeology & Engineering Geology
基金
中国地质调查局项目(12120114022001)
全国地热资源调查项目(1212011120155)
关键词
地埋管热泵
地温场
多元回归
ground-source heat pumps（GSHP）
the ground temperature field
multiple regression
