基于微热管阵列辐射板性能实验与模拟优化分析  

Performance Experiment and Simulation Optimization Analysis of Radiation Plates Based on Micro Heat Pipe Arrays

作　　者：郝云飞 全贞花[1] 郝丽敏[1] 赵耀华[1,2] 何兴露 徐哲 HAO Yunfei;QUAN Zhenhua;HAO Limin;ZHAO Yaohua;HE Xinglu;XU Zhe(Beijing University of Technology,Beijing 100124,China;Boyi New Energy Science and Technology Development Co.,Ltd.,Zibo 255220,Shandong,China)

机构地区：[1]北京工业大学绿色建筑环境与节能技术北京市重点实验室,北京100124 [2]淄博博一新能源科技,发展有限公司,山东淄博255200

出　　处：《建筑科学》2024年第12期116-125,共10页Building Science

基　　金：国家重点研发计划;政府间国际科技创新合作重点专项项目“基于MHPA超级导热材料的BIPVT零能耗建筑供能协同储能关键技术研究”(2022YFE0118500)。

摘　　要：基于微热管阵列辐射板具有传热效率高、供水温度低和结构简单等优点,本文对该辐射板应用于供暖房间的性能进行了实验和模拟优化研究。在供水温度45℃和流量200 L/h的工况下,辐射板的供热量为220.0 W/m^(2),辐射换热量占比67.6%,总传热系数为10.9 W/(m^(2)·K),高于传统辐射末端形式。分析了供水温度和流量对传热性能的影响,辐射板的供热量随供水温度的升高逐渐增大,随流量的升高而升高,但增速减缓。相较于对流换热量,供水温度和流量的变化对辐射换热量的影响更为显著。建立了辐射板传热过程的仿真模型,得到了辐射板各部分的温度分布和传热热阻,并对其结构进行了优化。通过在辐射板表面添加矩形封闭翅片引入强制对流,在相同工况下辐射板的供热量提高了31.3%。研究结果为基于微热管阵列辐射板的应用提供了实验数据与理论参考。Based on the advantages of high heat transfer efficiency,low water supply temperature and simple structure of the micro heat pipe array radiant panel,the performance of the radiant panel applied to a heated room was tested,simulated and optimized.Under the operating conditions of water supply temperature of 45 C and a flow rate of 200 L/h,the heating capacity of the radiant panel was 220.0 W/m^(2),the radiation heat transfer accounted for 67.6%,and the total heat transfer coefficient was 10.9 W/(m^(2).K),which was higher than that of the traditional radiant terminal form.An analysis was conducted on the influence of water supply temperature and the flow rate on heat transfer performance.The heat supply of the radiant panel increased with the increase of water supply temperature and the flow rate,but the growth rate slowed down.Compared with the convective heat transfer,the change of water supply temperature and the flow rate has a more significant effect on the radiation heat transfer.A simulation model of the heat transfer process of the radiant panel was built,to obtain the temperature distribution and heat transfer thermal resistance of each part of the radiant panel and optimize its structure.By adding rectangular closed fins to the surface of the radiant plate to introduce forced convection,the heat supply of the radiant plate was increased by 31.3%under the same operating conditions.The research findings can provide experimental data and theoretical reference for the application of radiation plates based on micro heat pipe arrays.

关 键 词：微热管阵列 辐射板 对流换热 辐射换热 结构优化 

分 类 号：TU831[建筑科学—供热、供燃气、通风及空调工程]