同轴套管深埋管换热器不同埋深的综合换热能力  

Study on Heat Transfer Intensity of Coaxial Sleeve Heat Exchanger with Different Buried Depth

作　　者：杨棋升 王军 王宁刚 李磊 李超 王硕[4] 官燕玲[1] YANG Qisheng;WANG Jun;WANG Ninggang;LI Lei;LI Chao;WANG Shuo;GUAN Yanling(School of Architecture and Engineering,Chang'an University,Xi'an 710061,China;Xi'an Thermal Group Co.Ltd.,Xi'an 710016,China;Qinhua Thermal Group Co.Ltd.,Xi'an 710065,China;Purchasing and Bidding Management Center,Renmin University of China,Beijing 100872,China)

机构地区：[1]长安大学建筑工程学院,陕西西安710061 [2]西安市热力集团有限责任公司,陕西西安710016 [3]秦华热力集团有限公司,陕西西安710065 [4]中国人民大学采购与招标管理中心,北京100872

出　　处：《工业加热》2020年第5期12-17,24,共7页Industrial Heating

摘　　要：基于西安地区某个深度为4 000 m的钻井地质地温资料,建立了深度分别为2 000、2 500、3 000和3 500 m四种深埋同轴套管的耦合管内外换热的全尺寸数值计算模型,并结合青岛某个埋深为2 605 m的同轴套管深埋管换热系统运行参数,对模型进行了验证。在此基础上,对其所建立的4种埋深模型计算运行240 h的换热特性,研究深埋管综合换热能力与埋深之间的变化规律。得到这四种深度的埋管,在恒定进口流率及入口温度的计算条件下,埋管运行240 h的时均综合换热强度与埋管埋深呈线性正相关的关系。Based on the geological and geothermal data of a drilling borehole with a depth of 4 000 m in Xi’an,a full-scale numerical calculation of the internal and external heat transfer of four deep buried coaxial casings with depths of 2 000,2 500,3 000 and 3500 m was established The model was validated with the operating parameters of a coaxial casing deep buried tube heat exchange system with a buried depth of2 605 m in Qingdao. Based on this,the heat transfer characteristics of 240 buried hours were calculated for the four buried depth models established by it,and the variation between the comprehensive heat transfer capacity and the buried depth of deep buried pipes was studied. The buried pipes at these four depths are obtained. Under the conditions of constant inlet flow rate and inlet temperature,the average heat transfer intensity and the buried depth of the buried pipes are linearly positively correlated with each other for 240 h.

关 键 词：深埋管换热器 换热强度 数值模拟 全尺寸模型 

分 类 号：Q413[生物学—生理学]