Life cycle greenhouse gas emissions and energy analysis of prefabricated reusable building modules
Life cycle greenhouse gas emissions and energy analysis of prefabricated reusable building modules
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DOI：
10.1016/j.enbuild.2011.11.049
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发表时间：
2012-04-01
影响因子：
6.7
通讯作者：
Mendis, P.
中科院分区：
文献类型：
--
作者：
Aye, Lu;Ngo, T.;Mendis, P.
预制是一种被认为可以改善建筑环境性能的策略。但是，对于预制的潜在环境效益，特别是由于减少废物和提高材料使用效率所带来的具体能源节约，缺乏详细的科学研究或案例研究。本文旨在量化模块化预制钢和木材多住宅建筑的蕴含能量，以确定这种建筑形式是否比传统的混凝土施工方法提供更好的环境性能。此外，本文还评估了材料可重复使用的潜在好处，减少了填埋场所需的空间和额外的资源需求。一个8层，3943米(2)的多住宅建筑被调查。研究发现，与传统的混凝土结构相比，钢结构预制系统可减少高达78%的材料消耗。然而，与混凝土建筑相比，预制钢结构建筑的蕴含能量显著增加（约为50%）。结果表明，在预制钢结构建筑中，材料的再利用具有巨大的潜力，节省了81%的隐含能源和51%的材料质量。这种建筑形式有可能对改善建筑行业的环境可持续性作出重大贡献。爱思唯尔B.V.版权所有
Prefabrication is one strategy considered to provide improved environmental performance for building construction. However, there is an absence of detailed scientific research or case studies dealing with the potential environmental benefits of prefabrication, particularly the embodied energy savings resulting from waste reduction and the improved efficiency of material usage. This paper aims to quantify the embodied energy of modular prefabricated steel and timber multi-residential buildings in order to determine whether this form of construction provides improved environmental performance over conventional concrete construction methods. Furthermore this paper assesses the potential benefits of reusability of materials, reducing the space required for landfill and need for additional resource requirements.An eight-storey, 3943 m(2) multi-residential building was investigated. It was found that a steel-structured prefabricated system resulted in reduced material consumption of up to 78% by mass compared to conventional concrete construction. However, the prefabricated steel building resulted in a significant increase (similar to 50%) in embodied energy compared to the concrete building. It was shown that there was significant potential for the reuse of materials in the prefabricated steel building, representing up to an 81% saving in embodied energy and 51% materials saving by mass. This form of construction has the potential to contribute significantly towards improved environmental sustainability in the construction industry. Crown Copyright (C) 2011 Published by Elsevier B.V. All rights reserved.