摘要
近零能耗节能标准是建筑节能标准2016—2030新三步走设想最后一步,该文针对《近零能耗建筑标准》在重庆农村地区的可实施性问题进行探讨,选取典型民居利用DeST-H软件模拟,以模拟所得的制冷年耗冷量作为衡量标准,在标准给出的“外墙”“屋顶”和“外窗”热工性能技术指标范围内,分析三者节能效果,以及朝向和楼层与建筑能耗的关系,并探讨了达到能耗要求后室内热环境和经济性。最后得出了以下结论:在夏热冬冷地区,改善外墙传热系数是进一步节能最有效的方式;加强二层房间外墙热工性能相比一层节能效果更好;对比典型农居综合改善三者热工性能静态回收期需6~7年;建筑围护结构热工性能较好时,改善外窗传热和朝向对冷负荷影响不大。
The nearly zero energy consumption energy-saving standard is the last step in the new three-step assumption of building energy-saving standard from 2016 to 2030,In this paper we select typical rural residence to simulate with DeST-h software,and discuss the implementability of technical standard for nearly zero energy building in rural areas of Chongqing.According to the simulated annual cooling consumption,we analyze the energy-saving effects of the exterior wall,roof and exterior,as well as the relationship between orientation,floor and building energy consumption.In addition,the indoor thermal environment and economy after meeting the energy consumption requirements are discussed.The following conclusions are drawn:firstly,improving the heat transfer coefficient of exterior wall is the most effective way to further save energy.Secondly,improving the thermal performance of the exterior wall of the room on the second floor is better than that on the first floor.In addition,compared with the comprehensive improvement of typical rural houses,the static recovery period of thermal performance of the three needs 6~7 years.Finally,when the thermal performance of the building envelope is good,improving the heat transfer and orientation of the outer window has little effect on the cooling load.
作者
王叶涵
张海滨
杨向婷
孙佳奇
Wang Yehan;Zhang Haibin;Yang Xiangting;Sun Jiaqi
出处
《华中建筑》
2023年第5期71-75,共5页
Huazhong Architecture
基金
中央高校基本科研业务费资助(编号:YS2020YFD110025)。
关键词
夏热冬冷地区
近零能耗建筑
制冷年耗冷量
围护结构
保温材料经济性
Hot summer and cold winter zone
Nearly zero energy building
Annual cooling consumption of refrigeration
Building envelope
Economy of thermal insulation materials
