同轴套管换热器井下换热性能实验研究  

Experimental study on downhole heat transfer performance of tubular heat exchanger

作　　者：王建辉[1] 刘自强[1] 焦敏 刘伟[1] 付鹏 梁迎凯[1] 王鹏 彭国辉[1] 袁小雪 WANG Jianhui;LIU Ziqiang;JIAO Min;LIU Wei;FU Peng;LIANG Yingkai;WANG Peng;PENG Guohui;YUAN Xiaoxue(The Institute of Energy Resources,Hebei Academy of Sciences,Shijiazhuang Hebei 050081,China;Hebei Huanjie Energy Technology Co.,Ltd.,Shijiazhuang Hebei 050011,China)

机构地区：[1]河北省科学院能源研究所,河北石家庄050081 [2]河北桓杰能源科技有限公司,河北石家庄050011

出　　处：《河北省科学院学报》2024年第1期58-64,共7页Journal of The Hebei Academy of Sciences

基　　金：河北省科学院科技计划项目(23702)。

摘　　要：本文介绍了一种适用于中深层地热井的同轴套管式换热器技术,可以做到传热不传质,取热不取水,在最大限度利用深层地热的同时,不消耗深层地下水。通过实际测试单井取热量可达到118 W/m,具有取热量大、后期运行费用低等优点。实际工程应用显示,利用“地热+”模式可以有效解决因地热井关停带来的诸多问题。利用关停的中深层地热井,只取热而不抽取地下水,有效避免中深层地热井闲置造成的资金浪费,同时可为用户提供高效清洁的能源供给。A tubular heat exchanger technology suitable for medium and deep geothermal wells is introduced in this paper,which can achieve heat transfer without mass transfer,heat extraction without water extraction,and maximize the use of deep geothermal heat without consuming deep groundwater.The actual test shows that the heat extraction of a single well can reach 118 W/m,which has the advantages of large heat extraction and low operation cost in the later stage.Practical engineering applications demonstrate that the use of′geothermal+′mode can effectively solve many problems caused by the shutdown of geothermal wells.The utilization of closed medium and deep geothermal wells for heat extraction without groundwater extraction effectively avoid the waste of funds caused by idle medium and deep geothermal wells.At the same time,it can provide users with efficient and clean energy supply.

关 键 词：中深层地热井 同轴套管式换热器 取热量 实验 

分 类 号：TK124[动力工程及工程热物理—工程热物理]