摘要
目前我国建筑能耗较高,为了响应国家大力发展装配式建筑和超低能耗建筑的要求,以及实现2030年碳达峰、2060年碳中和的目标,提出将轻钢龙骨墙体应用于装配式近零能耗建筑中。然而,轻钢龙骨墙体自身存在多处热桥,如何降低热桥效应、提高墙体保温性能是将其应用到装配式近零能耗建筑中的一大难题。通过三维模拟分析法,研究了轻钢龙骨墙体各构件对装配式轻钢龙骨墙体平均传热系数的影响,并针对类似结构的墙体提出了避免高导热系数的材料与外界空气直接接触,对高导热系数材料进行保温包覆,减少大跨度构件,选用适当的保温材料敷设保温层等提高墙体隔热性能的可行性建议。针对示例墙体结构提出了满足近零能耗建筑目标的优化方案。
In current severe situation of high building energy consumption domestically,the lightweight steel frame wall utilized in prefabricated near-zero-energy buildings is proposed in order to achieve the goal of carbon peak before 2030 and carbon neutrality by 2060,in response to prefabricated buildings and ultra-low energy buildings development.However,there are many thermal bridges in the lightweight steel frame wall.How to reduce the thermal bridge effect and improve the insulation performance is a big challenge when it is applied to prefabricated near-zero energy buildings.Through method of three-dimensional simulation analysis,the influence of each component in the lightweight steel frame wall on the average heat transfer coefficient is expounded.And for the similar structure,it is proposed to avoid the direct contact between the materials with high thermal conductivity and the outside air.Thermal insulation coating of high thermal conductivity materials,elimination of long-span components,selection of appropriate thermal insulation materials,and other feasible proposals to improve the wall thermal performance are put forward.An optimized plan to meet the goal of a near-zero energy building is highlighted based on the analyzed wall structure.
作者
李文杰
袁琦
顾刘勇
谢超
LI Wen-jie;YUAN Qi;GU Liu-yong;XIE Chao(Tianjin University,Tianjin 300000,China;Zhongyifeng Construction Group Co.,Ltd.,Suzhou 215000,Jiangsu,China)
出处
《建筑节能（中英文）》
CAS
2022年第10期19-22,51,共5页
Building Energy Efficiency
基金
2020年苏州市建设系统科研项目计划:高品质绿色建筑适宜技术体系研究与示范。
关键词
装配式
近零能耗建筑
轻钢龙骨墙体
三维
传热系数
prefabricated
near-zero energy building
lightweight steel frame wall
3-D
heat transfer coefficient
