地质结构分层中地埋管换热特性研究  

STUDY ON HEAT TRANSFER CHARACTERISTIC OF VERTICAL BOREHOLE HEAT EXCHANGER AT DIFFERENT GEOLOGICAL STRUCTURE

作　　者：李明洪 李晓昭[1] 王斌[1] 赵鹏[1] 董盛时 刘爱斌[2] Li Minghong;Li Xiaozhao;Wang Bin;Zhao Peng;Dong Shenshi;Liu Aibin(School of Earth Sciences and Engineering,Nanjing University,Nanjing 210023,China;Jiangsu Provincial Bureau of Geology and Mineral Resources Fifth Geological Brigade,Xuzhou 221004,China)

机构地区：[1]南京大学地球科学与工程学院,南京210023 [2]江苏省地质矿产局第五地质大队,徐州221004

出　　处：《太阳能学报》2020年第1期290-294,共5页Acta Energiae Solaris Sinica

基　　金：国家自然科学基金(41272314);苏州科技计划项目(SYG201451);欧盟Marie-Curie合作计划(FP7-IRSES-612665);国家国际合作计划(2009DFA22680)。

摘　　要：依托徐州某工程场地,分析分层地质结构体中地埋管的换热特征,提出应考虑地层结构指导地埋管埋深,并研究进水温度、循环水流速、运行方式与分层换热量的变化规律。结果表明,地层分层研究在分析钻井埋管深度设计方面具有优势,换热性能好的地层受循环介质温度、流速的影响变化最为显著;间歇性运行能有效提高地层换热量,换热性能好的地层增益效果佳。Based on an engineering site in Xuzhou,the heat transfer characteristic of buried pipes in stratified geological structures is analyzed in this paper,and this paper puts forward that the heat transfer difference of geological structure should be taken into account in the guidance of length of buried pipes. In addition,the discipline of inlet temperature,circulating water flow velocity and operating mode with borehole heat exchange capacity are analyzed. The results show that study on heat transfer characteristic in geological structure has some advantages in the analysis of drilling depth,the strata with good heat transfer performance is the most easy-affected by inlet water temperature and velocity of the circulating water,intermittent operation could effectively improve the heat transfer capacity of the burid pipes,and the geological structure with good heat transfer performance changes more significant.

关 键 词：地源热泵 地热能 传热 地埋管换热器 热响应试验 

分 类 号：TU831[建筑科学—供热、供燃气、通风及空调工程]