成都地区外窗传热系数及通风模式对建筑节能的影响.pdfVIP

学兔兔 新 建巍 全国中文核心期刊 成都地区夕 窗传热系数及遇风模式 对建筇节雒硇影响 李晓虹，苏华 (西华大学 能源与环境学院，四川 成都 610039) 摘要：运用DeST—h软件对成都地区某居住建筑室内温度和冷热负荷进行了模拟，研究了外窗热工性能以及通风模式对基础 室温、冷热负荷的影响。结果表明，夏季室内基础室温高于29℃的时间占全年不到5％，而冬季室温低于 16℃占全年30％左右，夏 季室内基础室温可容忍度明显优于冬季。降低外窗传热系数后，冬季热负荷降低；而对夏季冷负荷的影响还与通风效果直接相关， 通风不好的情况下冷负荷有可能增加。因此，加强保温有利于降低供热能耗：围护结构隔热性能提高时，还必须注意合理利用自然 通风，以降低空调制冷能耗。 关键词：外窗；传热系数；建筑节能；DeST～h 中图分类号：TU1l1．19 文献标识码：B 文章编号：1001—702X(2010)09—0083—03 Effects of heat transfer coefficient of external windows and ventilation mode on building energy saving in chengdu area LI Xiaohong，SU Hua (School of Energy and Environment，Xihua University，Chengdu 610039，Sichuan，China) Abstract：Using the software DeST-h，research was carried out on the simulated indoor room temperature，cooling and heating load of a residential building in Chengdu，with a focus on the effects of thermal performance of external windows and the ventilation mode on the basic temperature and cooling and heating load．Results indicate the percentage of time when the room temperature above 29 oC accounts for less than 5％ of the annual total，while the temperature lower than 16℃ accounts for 30％．The base room temperature in summer is better than winter．While reducing the heat transfer coefficient of external windows，the winter heating load decreases；while the summer cooling load is also influenced by ventilation mode．The summer cooling load may be increased under poor ventilation effect