摘要
以拉萨地区城镇居住建筑为例,以冬至日不同朝向室外综合温度作为室外计算温度,分析了不同节能构造围护结构在稳态条件下的传湿情况。结果表明:拉萨地区围护结构南向不出现冷凝,北向易出现冷凝,并且该地区围护结构适合采用外保温构造和夹芯保温构造,不宜采用内保温构造;围护结构应采取非平衡防冷凝构造设计。因此,该文的结果不仅可使西藏地区居住建筑围护结构传湿分析更加准确,同时也为该地区围护结构的防冷凝构造设计提供了理论依据。
It is greatly different between sol-air temperature and outdoor air temperature in Tibet altiplano where solar radiation is strong. Taking energy efficiency city residential building in Lassa region as an example, moisture transfer in envelope of different configurations was analyzed adopting different direction sol-air temperature in midwinter day as calculating temperature. The results show that there is no dew-formation in south envelope and dew-formation often occurs in north envelope. In this region, building envelope should adopt external thermal insulation and Sandwich insulation except internal thermal insulation. Optimum no-uniformity configuration design of building envelope for preventing dew-formation was suggested in this study. Therefore, these not only enable more accurate calculation of moisture transfer in building envelope in Tibet ahiplano, but also provide better information for optimum configuration design of building envelope for prevention of dew-formation in similar region.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2011年第2期175-179,共5页
Acta Energiae Solaris Sinica
基金
国家自然科学基金重点项目(50638040)
关键词
西藏高原
拉萨地区
围护结构
室外综合温度
传湿
非平衡墙体构造
Tibet altiplano
Lassa region
building envelope
sol-air temperature
moisture transfer
no-uniformity configuration
