摘要
对于地下水源热泵而言,"热突破"现象普遍存在。但不同的布井方案,即抽、灌井间距和井位的不同,可能引起抽水井的温度变化差异很大,进而影响地温空调系统采能功效。本文结合郑州市儿童医院地温空调实例工程,应用HST3D程序对细颗粒含水层地区1抽2灌模式下不同布井方案进行了分析。结果表明,该区的最佳井间距为50m左右;选择直线型布井,抽、灌井连线平行于天然水力坡度方向,且天然水力坡度由抽水井指向回灌井的方式效果最好。
The phenomenon of heat breakthrough is commonly observed in groundwater - source heat pumping. Different schemes of well deployment, in which distances between pumping wells and injection wells are variable, may cause large temperature changes, and further affect the efficiency of the groundwater - source heat pump system. Based on the actual project of the groundwater - source heat pump system in the Zhengzhou Children Hospital, this paper analyzes different schemes with 1 pumping well and 2 injection wells in the aquifer of fine panicles. The results show that the best distance be-tween the wells is about 50 m,and the scheme in which the wells are located along a straight line,the natural groundwater gradient is parallel to the line between the pumping well and the injection well, and the gradient is directed to the injection well, will receive the best results.
出处
《地质与勘探》
CAS
CSCD
北大核心
2013年第2期367-372,共6页
Geology and Exploration
基金
河南省国土资源厅地质矿产科技攻关项目(豫财招标采购(2006)26402号)资助
关键词
水源热泵
布井方案
HST3D
数值模拟
细颗粒含水层
water - source heat pump, well deployment scheme, HST3 D, numerical simulation, aquifer of fine particles
