摘要
以4种不同建筑保温体系方案为研究对象,对框架结构建筑填充墙与柱子部位形成的热桥建立三维稳态传热模型。以马鞍山市冬季室内外气候参数为计算条件,利用CFD数值模拟4种不同保温方案下的建筑外墙的温度场分布、墙体内表面热流大小,重点分析热桥对外墙平均传热系数的影响。结果表明,建筑结构自保温一体化系统具有与外墙外保温相当的保温效果;且建筑结构自保温一体化系统明显改善了现阶段自保温墙体系统存在的热桥问题,该系统中热桥引起的传热系数增加比例最小,为29.35%。
Four different cases of building insulation systems were taken as the research objects. The physical model was established to describe the two dimensional steady heat transfer of building thermal bridges between filler wall and pillar in the framework structure building. The indoor and outdoor climate parameters in Ma＇anshan city were considered as the design conditions. The value of heat flux and the inner surface temperature of the wall under the four cases were simulated by CFD method. The influence on the average heat transfer coefficient of exterior wall by the thermal bridge was analyzed mainly. The results show that the effect of heat insulation of the self-insulation and building structure integration system is as good as that of external thermal insulation system; Furthermore, the self-insulation and building structure integration system can significantly solve the present thermal bridge problem of self-insulation wall, the percentage on heat transfer coefficient increase caused by thermal bridge is 29.35% in this system, which is the smallest.
出处
《安徽工业大学学报（自然科学版）》
CAS
2013年第3期266-269,307,共5页
Journal of Anhui University of Technology（Natural Science）
基金
安徽省住房城乡建设科学技术计划项目(2013YF-37)
安徽工业大学研究生创新基金项目(2012036)
关键词
自保温
热桥
热流
传热系数
一体化
self-insulation wall
thermal bridge
heat flow
heat transfer coefficient
integration
