可再生能源2025，Vol.43Issue(9)：1169-1179,11.
基于热湿耦合的严寒地区空冷型BIPV/T墙体保温层厚度优化
Thickness optimization of air cooled BIPV/T wall in severe cold regions insulation layer based on heat and humidity coupling
摘要
Abstract
In order to investigate the heat and moisture transfer characteristics of air-cooled Building Integrated Photovoltaic/Thermal walls,in this paper,the heat and moisture coupling transfer model of forced convection air-cooled BIPV/T wall is established in Shenyang,a cold region,as an example.Combined with the experimental study,the heat and moisture transfer of this wall under winter working conditions is analyzed,based on the coupled heat and moisture transfer characteristics,optimize the thickness of the wall insulation layer.The results show that the air-cooled BIPV/T wall can generate electricity with an efficiency of up to 18.11%.The air-cooled wall temperature transfer has a time lag factor of τ=17～19 h and a decay coefficient of f=0.000 7.The time lag for ordinary walls is τ=11～13 h and the decay coefficient is f=0.000 9.Air-cooled walls provide better indoor thermal comfort with a greater time lag factor compared to normal walls.The growth rate of internal water content in normal walls is 5.6 times higher than in air-cooled walls,air-cooled walls can reduce the growth of water content in the wall.To further optimize the wall structure,the relationship between the BIPV/T system and the thickness of the insulation layer of the externally insulated wall was explored.The results show that the optimal insulation thickness for air-cooled walls is 20 mm when considering the thermal and wet coupling behavior of the wall.关键词
光伏光热/热湿耦合/热工性能/保温层厚度Key words
photovoltaic photothermal/heat and moisture coupling/thermal performance/insulating layer thickness分类
能源科技引用本文复制引用
于水,刘阳,孙圣坤,徐一嘉,崔恩宁..基于热湿耦合的严寒地区空冷型BIPV/T墙体保温层厚度优化[J].可再生能源,2025,43(9):1169-1179,11.基金项目
国家自然科学基金项目(52478099) （52478099）
辽宁省自然科学基金计划(2024-MS-117) （2024-MS-117）
辽宁省教育厅高等学校基本科研项目(LJ222410153080) （LJ222410153080）
辽宁省教育厅高等学校优秀博士研究生项目(2024bspy-1-003). （2024bspy-1-003）
