地温条件下重力热管蒸发段极限长度研究  

Study on Limit Length of Evaporation Section of Gravitational Heat Pipe under the Ground Temperature Condition

作　　者：黄梦清 赵树兴[1] 许康鹿 于云雁 HUANG Mengqing;ZHAO Shuxing;XU Kanglu;YU Yunyan(Tianjin Chengjian University,Tianjin 300384,China;Hangzhou Urban&rural Construction Design Institute CO.,LTD.,Hangzhou 310000,China)

机构地区：[1]天津城建大学,天津300384 [2]杭州市城乡建设设计院股份有限公司,杭州310000

出　　处：《天津城建大学学报》2021年第3期173-177,184,共6页Journal of Tianjin Chengjian University

摘　　要：分析我国不同地区浅层地温分布及热流特点,并以地温条件下重力热管为研究对象,基于重力热管传热极限理论,整理了地温条件下重力热管蒸发段极限长度的计算式,进而分析了地埋重力热管蒸发段极限长度的影响因素.研究表明:地温条件下重力热管蒸发段极限长度取决于工质及其工作温度、每延米热流密度和热管内径.The characteristics of shallow geothermal distribution and heat flow in China were analyzed,and the gravitational heat pipe under the ground temperature was taken as the research object.Based on the theory and formula of heat transfer limit of gravity heat pipes,the paper provided the limit length of gravitational heat pipe evaporation section under the ground temperature by deduction and analysis,and analyzed the influencing factors and regularity of the limit tube length of the evaporation section of the buried gravitational heat pipe.The study shows that for a given working fluid,the limit length of the gravitational heat pipe evaporation section under the ground temperature depends on the working fluid and its working temperature,heat flux density per linear meter inner diameter of the heat pipe,the working temperature,and inner diameter of the heat pipe heat flux density per linear meter.

关 键 词：浅层地热能 地温条件 重力热管 传热极限 蒸发段极限长度 

分 类 号：TK172.4[动力工程及工程热物理—热能工程]