东南大学学报（自然科学版）2024，Vol.54Issue(2)：465-474,10.DOI:10.3969/j.issn.1001-0505.2024.02.025
基于辐射型反射涂层的热控制墙体性能分析
Performance analysis of thermally controlled walls based on radiant reflective coating
摘要
Abstract
To evaluate the energy-saving effect of heat-controlled walls based on radiant reflective coatings and to solve the problem of the lack of relevant evaluation systems,a transie2nt heat transfer model for walls is es-tablished to investigate the dynamic characteristics of wall temperature and heat flow under complex climatic alternating environments,as well as the role of radiant heat transfer as a heat regulator in the passive cooling process.In addition,a new evaluation model based on the heat flow and heat transfer coefficients of the walls is proposed for performance evaluation.The results show that under the condition of indoor air-conditioning,the external surface temperature of the thermally controlled wall decreases by 10.74％on average and the heat flow improves by 281.54％compared with the normal wall;in the hot summer and warm winter regions,the radiant reflective coating on the south side of the building has the best effect,and the coating can reduce the annual cold load of the building by 87.8 MJ/m2;in the hot summer and cold winter regions,radiant reflective coating on the west side of a building can reduce the total annual load of the building by 26.3 MJ/m2.The proposed performance evaluation index can characterize the heat transfer process and heat transfer characteris-tics of thermally controlled walls within one day,and then obtain the discounted heat transfer coefficient of the walls,which is important for guiding the actual building construction and reducing the total energy consump-tion of the whole building life cycle.关键词
辐射型反射涂层/数值模拟/动态特性/建筑节能/评价指标Key words
radiant reflective coatings/numerical simulation/dynamic characteristics/building energy effi-ciency/evaluation index分类
建筑与水利引用本文复制引用
胡轩宇,殷勇高,赵兴旺..基于辐射型反射涂层的热控制墙体性能分析[J].东南大学学报（自然科学版）,2024,54(2):465-474,10.基金项目
国家重点研发计划资助项目(2018YFC0705306). （2018YFC0705306）
