摘要
为满足建筑节能65%的设计要求,对现有加气混凝土砌块进行优化调整,开发出一种超轻质加气混凝土砌块。利用ANSYS软件对超轻质加气混凝土砌块自保温体系典型热桥进行二维稳态传热分析,研究不同保温情况下典型热桥的热桥影响区域及该区域内的热损显著程度,并根据热桥影响区域对热桥节点进行优化,即将热桥局部保温层向两侧墙体延伸200 mm。对比分析后得出,优化后的热桥节点能解决墙柱接触部位的漏热问题,降低热桥部位的耗热能力,在一定情况下可将热桥局部保温层厚度减薄10 mm左右,该热桥构造方式能有效阻断热桥。
In order to meet energy-saving 65% requirement, an ultra-light aerated concrete block is developed by means of optimization and improvement to the existed aerated concrete block. The topic thermal bridge in self-insulation system of ultra-light aerated concrete is studied by ANSYS with two-dimensional steady state model. The influencing zone of the thermal bridge is researched in different insulation conditions. Moreover, the significance level about the heat consumption of the influencing zone is analyzed.For this reason, a improved thermal bridge joint is proposed, which refers to the structure that the external insulating layer of the column is extended to both sides 200 mm. The results show that the improved thermal bridge structure can realize the insulation layer thickness reduction about 10 mm under a certain condition,and can also eliminate the heat loss from the junction of wall and column. The heat loss can be blocked effectively by the thermal bridge joint.
出处
《建筑节能》
CAS
2014年第12期18-21,共4页
BUILDING ENERGY EFFICIENCY
基金
国家科技支撑计划项目(2011BAJ03B03)
武汉市科技计划项目(2014070504020242)
武汉理工大学自主创新研究基金项目(145206006)
关键词
超轻质加气混凝土砌块
自保温体系
热桥柱
热桥影响区域
构造优化
Ultra-light aerated concrete block
self-insulation system
thermal bridge column
influ-encing zone of thermal bridge
structure optimization
