夏热冬冷地区外窗传热系数对建筑能耗的影响.pdfVIP

学兔兔 第30卷 第6期 重 庆 建 筑 大 学 学报 Vo1．30 NO．6 2008年12月 Journal of Chongqing Jianzhu University Dec．2008 夏热冬冷地区外窗传热系数对建筑能耗的影响 闫成文， 姚 健， 周 燕， 叶晶晶 (宁波大学建筑工程与环境学院，浙江宁波 315211) 摘要：使用清华大学开发的建筑能耗模拟软件DeST—h，对宁波地区一幢典型居住建筑的能耗随各向窗 户传热系数的变化规律进行了模拟分析。分析表明：各向外窗传热系数变化对采暖能耗有较大影响，对 空调能耗影响不大，通过降低传热系-fgc的方法很难减少夏季空调负荷；南向窗户传热系数对建筑能耗的 影响最大，北向次之，东、西向最小；南、北向外窗传热系数从 4．7降到 3．2节能投资性价比最高。并且 分析了外窗传热系数降低引起空调能耗增加的原因。研究结果对夏热冬冷地区其他城市也具有参考 意义。 关键词：外窗传热系数；DeST—h；建筑能耗；夏热冬冷地区 中图分类号：TU111．19 5．2 文献标识码：A 文章编号：1006—7329(2008)06—0120—04 Effects of Heat Transfer Coefficient of External Window on Residential Buildings in Subtropical Areas YAN Cheng—wen，YAO Jian，ZHOU Yan，YE Jing—jing (Faculty of Architectural，Civil Engineering and Environment，Ningbo University，Ningbo 315211，P．R．China) Abstract：Using Designers Simulation Toolkit DeST—h developed by Tsinghua University，research was carried out on the energy consumption of a typical residential building in Ningbo，P．R．China，with a focus on the heat transfer coefficient of external windows facing every direction．Results show that variation of the heat transfer coefficient of external windows in al1 directions has a substantial effect on energy consumption for heating but little effect on energy consumption for cooling．It is difficult to decrease cooling energy consumption by decreasing the heat transfer coefficient of external windows in summer．The heat transfer coefficient of external windows facing south has a significant effect on building energy consumption，but the windows facing north have less effect，and those facing east and west have the least impact．Decreasing the