A generic model of Exergy Assessment for the Environmental Impact of Building Lifecycle

A generic model of Exergy Assessment for the Environmental Impact of Building Lifecycle
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建筑生命周期环境影响的火用评估通用模型

DOI:
10.1016/j.enbuild.2010.03.018
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发表时间:
2010-09
影响因子:
6.7
通讯作者:
Yao, Runming
Yao, Runming
中科院分区:
工程技术2区
文献类型:
--
作者:
Liu, Meng;Li, Baizhan;Yao, Runming

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本文提出了一种适用于建筑物环境影响的(火用)评价的通用模型,并特别关注自然环境。三大环境影响:分别从含能火用、资源化学火用和污染物排放火用三个方面对能源消耗、资源消耗和污染物排放进行了分析。由此建立的建筑物环境影响(火用)评价通用模型包括两个子模型,一个是从建筑能源利用角度,另一个是从建筑材料使用角度。结合Odum等生态学家的理论,通过建筑物的火用足迹和环境影响来评价建筑物的环境可持续性。中国重庆的案例研究说明了这种方法的应用。从案例研究中发现,在50年的建筑生命周期中,能源消耗占总环境影响的70-80%,其中运营阶段占总环境影响的80%,建筑材料生产阶段占15%,其他阶段占5%。
A generic model of Exergy Assessment is proposed for the Environmental Impact of the Building Lifecycle, with a special focus on the natural environment. Three environmental impacts: energy consumption, resource consumption and pollutant discharge have been analyzed with reference to energy-embodied exergy, resource chemical exergy and abatement exergy, respectively. The generic model of Exergy Assessment of the Environmental Impact of the Building Lifecycle thus formulated contains two sub-models, one from the aspect of building energy utilization and the other from building materials use. Combined with theories by ecologists such as Odum, the paper evaluates a building's environmental sustainability through its exergy footprint and environmental impacts. A case study from Chongqing, China illustrates the application of this method. From the case study, it was found that energy consumption constitutes 70–80% of the total environmental impact during a 50-year building lifecycle, in which the operation phase accounts for 80% of the total environmental impact, the building material production phase 15% and 5% for the other phases.
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