海床砂土源热泵毛细管前端换热器换热性能研究  

Study on the heat exchange performance of capillary front-endheat exchanger of seabed sand source heat pump

作　　者：徐光瑞 于慧俐[1] 王禹浩 胡松涛[1] XU Guangrui;YU Huili;WANG Yuhao;HU Songtao(School of Environmental and Municipal Engineering,Qingdao University of Technology,Qingdao 266525,China)

机构地区：[1]青岛理工大学环境与市政工程学院,青岛266525

出　　处：《青岛理工大学学报》2024年第4期115-123,共9页Journal of Qingdao University of Technology

基　　金：国家自然科学基金资助项目(52078257)。

摘　　要：海床砂土源热泵是典型的清洁能源供能系统之一。为探究其毛细管前端换热器的换热性能,利用Matlab软件构建了换热器各个毛细管的数值传热模型,并基于该模型分析了管席不同位置处毛细管出口温度变化情况以及毛细管间距、埋深、管长对换热器换热性能的影响。模拟结果表明:当换热达到稳定时,管席顶部管和底部管的换热效果均优于中间各管的换热效果,并且毛细管间距、埋深和管长的增加有利于毛细管换热器换热性能的提升,毛细管间距从20 mm增大到60 mm时,冬夏季毛细管换热量分别增加了51.9%和17.8%,埋深从0.5 m增大到2.5 m时,冬夏季毛细管换热量分别增加了74.3%和53.9%,管长从0.5 m增大到3.0 m时,冬夏季换热量则均扩大了3.9倍。研究可为海床砂土源热泵前端换热器的设计提供理论支撑。Seabed sand source heat pump is a typical clean energy supply system.In order to explore the heat exchange performance of the capillary front-end heat exchanger,this paper uses Matlab software to construct a numerical heat exchange model of each capillary tube of the heat exchanger,and analyzes the changes of capillary outlet temperature at different positions of the pipe mat,as well as the influence of capillary spacing,burial depth and tube length on the heat exchange performance of the heat exchanger.The simulation results show that when the heat exchange is stable,the heat exchange effect of the top and bottom tubes of the pipe mat is better than that of the middle tubes,and the increase of the capillary spacing,the burial depth and the tube length is conducive to the improvement of the heat exchange performance of the capillary heat exchanger.When the capillary spacing increases from 20 mm to 60 mm,the heat exchange of the capillary tubes in winter and summer increases by 51.9%and 17.8%respectively;When the burial depth increases from 0.5 m to 2.5 m,the heat exchange of the capillary tubes in winter and summer increases by 74.3%and 53.9%respectively,and when the tube length increases from 0.5 m to 3.0 m,the heat exchange in winter and summer increases to 3.9 times.This study can provide theoretical support for the design of the front-end heat exchanger of the seabed sand source heat pump.

关 键 词：海床砂土源热泵 毛细管前端换热器 数值传热模型 换热性能 

分 类 号：TU831.6[建筑科学—供热、供燃气、通风及空调工程]