摘要
针对热湿地区建筑底层地表面普遍存在湿积累的现象,从土壤热湿迁移过程和室内热湿环境双效作用的角度对地表面结露现象进行分析,研究获得地面防潮与保温处理前后地表面的温湿度及湿流通量情况。结果表明,当室内空气相对湿度高于90%时,地表面极易发生冷凝。当在地面构造下部铺设防潮层时,可有效降低地表面相对湿度,但仍会发生结露,为避免结露现象,可在防水层与地面构造下部之间铺设厚度为140 mm的聚苯乙烯泡沫保温板。
For the wet accumulation phenomenon in the ground floor surface of the residential buildings in hot-humid area,this paper analyzes the phenomena of surface condensation by the soil heat and moisture transfers and indoor hygrothermal environment. The ground surface temperature,relative humidity and moisture flux were simulated with or without waterproof layer and insulation. The results show that:when the indoor relative humidity higher than 90%,the ground surface become more prone to condensation. The ground relative humidity is obviously reduced with the waterproof layer under the ground structure. In order to reduce the possibility of surface condensation,laying insulation layer between the waterproof layer and the ground structure,the ground temperature is obviously improved,and the thickness of 140 mm best with the use of polystyrene foam insulation board.
作者
王莹莹
康文俊
刘艳峰
张恒
王登甲
刘加平
Wang Yingying;Kang Wenjun;Liu Yanfeng;Zhang Heng;Wang Dengjia;Liu Jiaping(School of Environment and Municipal Engineering,Xi'an University of Architecture&Technology,Xi'an 710055,China)
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2020年第5期33-39,共7页
Acta Energiae Solaris Sinica
基金
国家自然科学基金(51508443,51590911)
国家重点研发计划(2016YFC0700400)。
关键词
建筑底层地面
水分控制
结露
保温
土壤热湿迁移
residential buildings ground floor surface
moisture control
condensation
thermal insulation
soil heat and moisture transfers
