Reassessment of fenestration characteristics for residential buildings in hot climates: energy and economic analysis  

作　　者：Ali ALAJMI Hosny ABOU-ZIYAN Hamad H.Al-MUTAIRI 

机构地区：[1]Mechanical Engineering Department,College of Technological Studies,PAAET,Kuwait [2]Mechanical Power Engineering Department,Faculty of Engineering,Helwan University,Cairo,Egypt

出　　处：《Frontiers in Energy》2022年第4期629-650,共22页能源前沿（英文版）

基　　金：funded by the Public Authority for Applied Education and Training(PAAET)under project number TS-08-14.

摘　　要：This paper attempts to resolve the reported contradiction in the literature about the characteristics of high-performance/cost-effective fenestration of residential buildings,particularly in hot climates.The considered issues are the window glazing property(ten commercial glazing types),facade orientation(four main orientations),window-to-wall ratio(WWR)(0.2–0.8),and solar shading overhangs and side-fins(nine shading conditions).The results of the simulated runs reveal that the glazing quality has a superior effect over the other fenestration parameters and controls their effect on the energy consumption of residential buildings.Thus,using low-performance windows on buildings yields larger effects of WWR,facade orientation,and solar shading than high-performance windows.As the WWR increases from 0.2 to 0.8,the building energy consumption using the low-performance window increases 6.46 times than that using the highperformance window.The best facade orientation is changed from north to south according to the glazing properties.In addition,the solar shading need is correlated as a function of a window-glazing property and WWR.The cost analysis shows that the high-performance windows without solar shading are cost-effective as they have the largest net present cost compared to lowperformance windows with or without solar shading.Accordingly,replacing low-performance windows with high-performance ones,in an existing residential building,saves about 12.7 MWh of electricity and 11.05 tons of CO_(2) annually.

关 键 词：parametric analysis high-performance window window-to-wall ratio(WWR) facade orientation solar shading cost analysis 

分 类 号：TK01[动力工程及工程热物理]