湿缓冲效应及其对建筑能耗的影响  

Moisture buffer effect and its impact on building energy consumption

作　　者：吴智敏 秦孟昊[1] 张明杰[1] 陈智[1] 

机构地区：[1]南京大学建筑与城市规划学院,南京210093

出　　处：《中国科技论文》2018年第1期1-5,共5页China Sciencepaper

基　　金：国家自然科学基金资助项目(51578278);高等学校博士学科点专项科研基金资助项目(2013009111005)

摘　　要：为了更加准确地计算调湿材料的吸/放湿量,基于湿缓冲值的基本概念,提出了一种改进的吸/放湿量计算方法,通过引入相关修正系数,配合湿缓冲值可以计算不同湿度波动范围下的调湿材料的吸/放湿量;同时提出了一种可在各种湿度循环条件下进行湿缓冲值测量的双瓶法。并且通过数值模拟计算,分析了湿缓冲效应在典型气候条件下对建筑能耗的影响。结果表明:在半干旱气候和温带气候中,使用恰当的湿缓冲材料可以使建筑节能效率达到25%;并且随着湿缓冲值的增大,节能效率显著增加,在巴黎和马德里地区最高可达到30%以上。In order to more accurately calculate the moisture uptake/release amount by hygroscopic materials,a theoretical correction factor that can be used with the basic moisture buffer value（MBV）to calculate the moisture uptake/release amount by hygroscopic materials exposed to different types of humidity variations was introduced based on the basic concept of MBV.Meanwhile,a two-bottle method to measure the moisture buffer value of hygroscopic materials under various humidity cycling conditions was proposed.In addition,the impact of moisture buffering effect on building energy consumption under different climate conditions was evaluated by numerical simulations.The results showed that the potential energy saving rate could be up to 25%when the proper hygroscopic materials were used in the test building under temperate climate and semi-arid climate conditions.The potential energy saving rate increased with the increase of MBV,which could be up to 30%in Paris and Madrid.

关 键 词：湿缓冲效应 湿缓冲值 调湿材料 室内湿环境 建筑节能 

分 类 号：TU111.24[建筑科学—建筑理论] TU119.5