装配式节能墙体设计及热工性能研究
Design and Thermal Performance Study of Prefabricated Energy-saving Wall
柯文涛1
作者信息
- 1. 福建省五建建设集团有限公司,福建 泉州 362001
- 折叠
摘要
为提升建筑墙体的保温性能,文中提出了四种装配式节能墙体设计方案,针对不同设计方案的温度、传热系数及导热系数进行对比分析,并基于此,确定节能效果最佳的墙体设计方案.结果表明,随着时间的增加,热箱墙体表面温度略微下降;冷箱墙体表面温度先快速降低后稳定.室外层竹基材料厚度为3mm时,复合墙体传热系数为0.78 W/(m2·K),导热系数为0.19 W/(m2·K),热阻为1.89 m2·K/W,当厚度增加至10 mm时,复合墙体传热系数降低17.9%,导热系数降低15.6%,热阻增加53.9%.综合节能效果、经济和安装难度等因素,确定最佳的装配式竹板节能墙体厚度为7 mm.
Abstract
In order to improve the thermal insulation performance of building walls,four kinds of prefabricated energy-saving wall design schemes are proposed in this paper.The temperature,heat transfer coefficient and thermal conductivity of different design schemes are com-pared and analyzed,and based on this,the best energy-saving wall design scheme is determined.The results show that the surface tempera-ture of the hot box wall decreases slightly with the increase of time.The surface temperature of the cold box wall decreases rapidly and then sta-bilizes.When the thickness of outdoor bamboo base material is 3 mm,the heat transfer coefficient of the composite wall is 0.78 W/(m2·K),the thermal conductivity is 0.19 W/(m2·K),and the thermal resistance is 1.89 m2·K/W.When the thickness is increased to 10 mm,the heat transfer coefficient and thermal conductivity of the composite wall are reduced by 17.9%and 15.6%.Thermal resistance increased by 53.9%.Considering the factors such as energy-saving effect,economy and installation difficulty,the best thickness of prefabricated bamboo board energy-saving wall is determined to be 7 mm.
关键词
装配式结构/墙体设计/节能效果/热工性能/导热系数Key words
Prefabricated structure/Wall design/Energy saving effect/Thermal performance/Thermal conductivity引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据