摘要
窗墙比的大小决定了通过外窗进入房间内的可见光、太阳辐射量以及温差传热量的多少,影响着室内自然采光效果及得热量大小,从而影响照明能耗和采暖空调能耗。以广州地区办公建筑为研究对象,采用EnergyPlus软件模拟对比了不同工况下以建筑能耗最低为目标时的最优窗墙比。结果表明,在照明智能控制前提下,窗墙比和建筑能耗的关系相对复杂,要综合考虑房间朝向、进深以及外窗光热性能的影响。对于北向和东向房间,增大窗墙比,有利于降低建筑能耗,建议尽量开大窗;但对于南向和西向房间,不能一味地开大窗,提出了不同房间进深以及外窗性能组合下对应的最佳窗墙比,方便设计师在建筑设计阶段进行组合搭配。
The size of the window-to-wall ratio(WWR) determines the amount of visible light, solar radiation, and heat transfer through the external windows into the indoor space, which affects the natural lighting and heating/cooling loads, and thus the lighting and HVAC energy consumption. This paper focuses on office buildings in Guangzhou and uses EnergyPlus software to simulate and compare the WWR for achieving the lowest building energy consumption under different scenarios. The results show that the relationship between WWR and building energy consumption is relatively complex when considering lighting control, and it is necessary to consider the effects of room orientation, depth, and the thermal properties of external windows. For north and east-facing rooms, increasing the WWR is beneficial for reducing building energy consumption, and it is recommended to maximize the window size. However, for south and west-facing rooms, it is not advisable to blindly increase the WWR. This paper provides the optimal WWR for different room depths and external window performances, facilitating designers to make combinations and arrangements during the building design stages.
作者
张进
陈思思
郑林涛
赵立华
ZHANG Jin;CHEN Sisi;ZHENGLintao;ZHAO Lihua(Guangzhou Pearl River Foreign Investment Architectural Designing Institute Co.,Ltd.,Guangzhou 510062,China;State Key Laboratory of Subtropical Building and Urban Science,School of Architecture,South China University of Technology,Guangzhou 510640,China;Guangzhou Institute of Energy Research,Chinese Academy of Sciences,Guangzhou 510640,China)
出处
《建筑节能（中英文）》
CAS
2023年第12期15-20,共6页
Building Energy Efficiency
基金
国家重点研发计划资助项目:“近零能耗高层办公建筑自适应围护结构关键技术研究”(2019YFE0124500)。
关键词
窗墙比
外窗光热性能
办公建筑
照明智能控制
window-wall ratio
optical and thermal performance of external window
office building
lighting control
