屋面积雪层热惰性指标和厚度的线性相关  

LINEAR RELATIONSHIP BETWEEN SNOW LAYER THICKNES ON ROOF AND THERMAL INERTIA INDEX

作　　者：黄锰[1] 王亚东 季强 HANG Meng;WANG Yadong;JI Qiang(School of Architecture,Harbin Institute of Technology,key Laboratory of Cold Region Urban and Rural Human Settlement Environment Science and Technology,Ministry of Industry and Information Technology,Harbin 150006,China;Architecture Design and Research Institute of Harbin Institute of Technology,Harbin 150090,China)

机构地区：[1]哈尔滨工业大学建筑学院,寒地城乡人居环境科学与技术工业和信息化部重点实验室,哈尔滨150006 [2]哈尔滨工业大学建筑设计研究院,哈尔滨150090

出　　处：《低温建筑技术》2019年第12期1-3,共3页Low Temperature Architecture Technology

基　　金：国家重点研发计划:既有公共建筑围护结构综合性能提升关键技术研究与示范(2016YFC0700702)

摘　　要：热惰性指标影响建筑热舒适和能耗。雪的密度和导热率一直在变化,难以直接计算热惰性指标,需要研究计算积雪层热惰性指标的简便方法。本实验以屋面积雪层为研究对象,以积雪层厚度为研究变量,设置四组厚度积雪层,测试积雪层上表面温度和下表面温度,通过振幅的衰减倍数计算积雪层的热惰性指标D。试验结果表明,该屋面积雪层热惰性指标D和厚度d(m)之间有线性关系:D=11.56×d(R^2=0.98);使用积雪层厚度可以直接计算积雪层热惰性指标。Thermal inertia affects thermal comfort and energy consumptionof buildings.The density and thermal-conductivity of snow are constantly changing,and it is difficult to directly calculate the thermal inertia index.A simple method for calculating the thermal inertia index of snow layers needs to be studied.In this experiment,the snow layer of the house area is used as the research object,and the thickness of the snow layer is used as the research variable.Four groups of snow layers are set where the upper and lower surface temperatures of the snow layer are tested.The experimental results show that there is a linear relationship between the snow layer thermal inertia index D and the snow layer thickness d(m):D=11.56×d(R^2=0.98).In addition,the snow layer thermal inertia index can be directly calculated using the snow layer thickness.

关 键 词：积雪层 屋面 热惰性指标 厚度 

分 类 号：TU119.21[建筑科学—建筑理论]