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A comparative life cycle assessment of three high-performance glazing systems for office buildings in a hot desert climate zone
Clean Technologies and Environmental Policy ( IF 4.3 ) Pub Date : 2020-07-06 , DOI: 10.1007/s10098-020-01891-2
Youssef O. Elkhayat , Mona G. Ibrahim , Koji Tokimatsu , Ahmed AbdelMonteleb M. Ali

Abstract

In hot desert climates, the office buildings with high-performance glazing systems (HPGSs) provide better indoor thermal and visual comfort to the occupants due to the advanced coatings which prevent the undesired heat gain and daylight. However, these systems save energy in the use phase; it could consume more energy in the pre-use and post-use phases. Furthermore, the use of advanced materials may have negative impacts on the environment. Therefore, this paper selected the comparative life cycle assessment method as an environmental measuring tool to compare the energy consumption and the environmental impacts of three HPGSs with that of the conventional clear double-glazing system. The results show that the photovoltaic glazing system (PVGS) has the lowest energy consumption and the lowest environmental impacts, followed by the electrochromic glazing system (ECGS) and the low-E glazing system. In the use phase, both PVGS and ECGS achieved the highest energy savings, 87% and 25%, respectively. The use phase has a major contribution to the energy consumption and environmental impacts, while the pre-use and post-use phases have insignificant contributions in this study. The results could support decision-makers in choosing the most environmentally friendly HPGS for their projects.

Graphic abstract



中文翻译:

在炎热的沙漠气候区中用于办公大楼的三种高性能玻璃系统的比较寿命周期评估

摘要

在炎热的沙漠气候中,具有高性能玻璃系统(HPGS)的办公大楼由于采用了先进的涂料,可防止居住者的不希望的热量获取和日光照射,从而为居住者提供更好的室内热和视觉舒适度。但是,这些系统在使用阶段可以节省能源。在使用前和使用后阶段可能会消耗更多的能量。此外,使用高级材料可能会对环境造成负面影响。因此,本文选择比较生命周期评估方法作为环境测量工具,以比较三种HPGS与常规透明双层玻璃系统的能耗和环境影响。结果表明,光伏玻璃窗系统(PVGS)具有最低的能耗和最低的环境影响,其次是电致变色玻璃系统(ECGS)和低辐射玻璃系统。在使用阶段,PVGS和ECGS均实现了最高节能,分别为87%和25%。使用阶段对能源消耗和环境影响有重大贡献,而使用前和使用后阶段对这项研究的贡献不大。结果可以支持决策者为其项目选择最环保的HPGS。

图形摘要

更新日期:2020-07-06
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