地源热泵地下高效换热系统热积累研究  

Study on heat accumulation of efficient underground heat exchange system of ground source heat pump

作　　者：薛颀 祖国全 XUE Qi;ZU Guo-quan(No.327 Unit,Bureau of Geology and Mineral Exploration of Anhui Province,Hefei,Anhui 230011,China;Anhui Fangzhou Science and Technology Development Co.,Ltd.,Hefei,Anhui 230601,China)

机构地区：[1]安徽省地质矿产勘查局327地质队,安徽合肥230011 [2]安徽省方舟科技开发有限责任公司,安徽合肥230601

出　　处：《安徽地质》2022年第1期76-79,共4页Geology of Anhui

摘　　要：通过对单孔高效换热井加热前后井内平均温度的持续观测发现,停止加热的单孔换热井,20天后温度可恢复到初始状态。采用多观测孔对冬季群井使用时的热影响范围进行研究,发现距工作井0.5m的观测井温度波动幅度为1.7℃,距工作井大于2m的观测井温度波动幅度小于0.2℃。工作井停止使用10天后,3.5m以外的观测井温度基本恢复,工作井停止使用50天后,所有观测井温度基本恢复。本文还对高效换热井的热影响范围进行了模拟计算和分析,并将高效换热井与U型地埋管换热器的热积累速度进行了对比分析。Through continuous observation of average temperature before and after heating in single-hole efficient heat exchange well, it is found that the temperature of the single-hole heat exchange well can be restored to the initial state 20days after heating is stopped. The thermal influence range was studied on group wells being put to use in winter by using multiple observation holes. It is found that the temperature fluctuation range is 1.7℃ for observation well 0.5m away from the working well, and less than 0.2℃ for well more than 2m away. The temperature of observation well beyond 3.5m basically recovered 10 days after the working well shut down, and all observation wells basically recovered 50 days after the working wells shut down. This paper also simulated and analyzed the heat influence range of the high efficiency heat exchange well, and compared the heat accumulation rate of the high efficiency heat exchange well with the U type ground heat exchanger.

关 键 词：地源热泵 高效换热井 U型地埋管换热器 模拟计算 

分 类 号：P641[天文地球—地质矿产勘探]