期刊
JOURNAL OF GREEN BUILDING
卷 7, 期 3, 页码 151-170出版社
COLLEGE PUBLISHING
DOI: 10.3992/jgb.7.3.151
关键词
life cycle assessment; design priorities; modular building; green building priorities; energy efficiency; materials; renewable energy
类别
Within this work, life cycle assessment modeling is used to determine top design priorities and quantitatively inform sustainable design decision-making for a prefabricated modular building. A case-study life-cycle assessment was performed for a 5,000 ft(2) prefabricated commercial building constructed in San Francisco, California, and scenario analysis was run examining the life cycle environmental impacts of various energy and material design substitutions, and a structural design change. Results show that even for a highly energy-efficient modular building, the top design priority is still minimizing operational energy impacts, since this strongly dominates the building life cycle's environmental impacts. However, as an energy-efficient building approaches net zero energy, manufacturing-phase impacts are dominant, and a new set of design priorities emerges. Transportation and end-of-life disposal impacts were of low to negligible importance in both cases.
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