摘要
建立试验场,模拟各种工况,实测地埋管周围岩土体的温度变化,分析不同条件下地下岩土层传热特征。研究发现,岩土体传热与热物性参数密切相关,一般岩石中热量扩散较土体中速度快;埋管周围岩土体传热大致可分为“主孔区”、“热棒区”、“传热区”、“外围扩散平衡区”四个区;由于地层组合不同,换热孔垂向上地温变化有差别;地下水流动有助于岩土体传热,流动越快,单孔换热效率相对更高。
A test field was established to simulate various working conditions,and the temperature changes of the rock and soil around the buried pipe were measured to analyze the heat transfer characteristics of the underground rock layer under different conditions.It is found that the heat transfer between the rock and soil is closely related to the thermal properties.Generally,the heat diffusion in the rock is faster than that in the soil.The heat transfer around the buried rock can be roughly divided into the“main hole zone”,“hot bar zone”,“heat transfer zone”and“diffusion equilibrium zone”,due to different stratigraphic combinations,the heat transfer holes have different vertical temperature changes,groundwater flow contributes to heat transfer in rock and soil,and the faster the flow,the higher the single-hole heat transfer efficiency.
作者
马俊
柯立
朱志明
刘红卫
江凯
Ma jun;Ke Li;Zhu Zhiming;Liu Hongwei;Jiang Kai(Wuhan Institute of Hydrogeologic and Engineering Geology,Wuhan,Hubei 430051;Hubei Geothermal Energy Research Center,Wuhan,Hubei 430051)
出处
《资源环境与工程》
2019年第S01期112-116,共5页
Resources Environment & Engineering
基金
武汉市浅层地温能调查评价项目(1212011120169)
全国地热资源调查评价(水[2011]01-17-28)
关键词
热传导
传热规律
热响应试验
heat conduction
heat transfer law
thermal response tes
