摘要
研究多孔建筑材料的湿传递特性对于围护结构的热工性能分析和建筑能耗的预测具有重要意义。多孔建筑材料中湿传递主要分为水蒸气和液态水的传递,在相对湿度较高的建筑环境中液态水的传递占据主导地位。液态水扩散系数、液态水渗透系数、毛细管系数和毛细吸水系数是常用的液态水传递系数。对这4种液态水传递系数之间的理论关联和主要测试方法进行了较为全面的整理,并以毛细吸水系数为例指出了现有研究的不足和未来的发展方向。
The research on moisture transport in porous building materials is of great significance for the thermal analysis of building envelopes and for the prediction of building energy consumption.The moisture transport in porous building materials can be classified into the transport of water vapor and liquid water,and the liquid water transport has the dominant effect in building environments with high relative humidities.The widely-adopted liquid water transport coefficients include liquid water diffusion coefficient,liquid water permeability,capillary coefficient as well as capillary absorption coefficient.The theoretical relationship between these four kinds of liquid water transport coefficients,as well as their measurement methods are reviewed comprehensively.Taking the capillary absorption coefficient as an example,the deficiencies of the existing research activities and the perspectives for future studies are highlighted.
作者
王可
田帅奇
范利武
俞自涛
徐旭
葛坚
WANG Ke;TIAN Shuai-qi;FAN Li-wu;YU Zi-tao;XU Xu;GE Jian(Institute of Thermal Science and Power Systems,Zhejiang University,Hangzhou 310027,China;Institute of Building Technology,Zhejiang University,Hangzhou 310027,China;School of Mesurement and Testing Engineering,China Jiliang University,Hangzhou 310018,China)
出处
《建筑节能》
CAS
2019年第11期77-82,96,共7页
BUILDING ENERGY EFFICIENCY
基金
“十三五”国家重点研发计划子课题(2016YFC0700302-02)
国家自然科学基金(51378482).
关键词
多孔建筑材料
液态水
传递系数
测试方法
porous building materials
liquid water
transport coefficient
test method
