Tackling uncertainty in life cycle assessments for the built environment: A review
Tackling uncertainty in life cycle assessments for the built environment: A review
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解决建筑环境生命周期评估中的不确定性：回顾
DOI：
10.1016/j.buildenv.2022.109941
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发表时间：
2023
影响因子：
7.4
通讯作者：
Marsh E
中科院分区：
文献类型：
--
作者：
Marsh E
建筑和建筑行业贡献了全球能源相关碳排放量的38%左右。LCA在产品和建筑物的环境评估中发挥着重要作用。在一些国家，现在要求将评估作为建筑项目规划文件的一部分。现有的建筑环境认证系统，如BREEAM和LEED，需要一种形式的碳评估。这增加了制造商制作环境产品声明（EPD）的需求，以支持建筑规模的评估和设计决策，同时也用于产品采购。LCA结果通常以确定性值表示，不确定性往往被忽略。这是特别危险的比较LCA的情况下，例如，其目的可以是减少碳排放量，通过选择一个产品或设计替代品具有较低的footfoot.This本文回顾了一般的LCA处理的不确定性的方法，并在具体的应用LCA的建筑产品和建筑物。建筑物是复杂的，在LCA中表示这一点，这是一个现实模型，可能具有挑战性。最大的影响节省是在设计的早期阶段实现的，在这个阶段，设计的不确定性和可变性很高。因此，解决和沟通不确定性在这里甚至更加重要。障碍，如获得不确定性信息的EPD和缺乏一致的不确定性程序，进行了讨论。未来的改进建议包括在EPD中报告不确定性信息和数据质量评估，可访问的数字化EPD信息以及在构建LCA软件时集成不确定性分析。正如以往的审查一样，建筑碳评估和传统的生命周期评估都表明，在透明度和报告假设和不确定性方面需要有很大的改进。这适用于EPD形式的两种产品，并在学术文献和行业报告中建立LCA结果。
AbstractThe building and construction sectors contribute around 38% of global energy-related carbon emissions. LCA plays an important role in environmental assessments of products and buildings. In some countries, assessments are now being required as part of the planning submissions for building projects. And existing building environment certifications systems, such as BREEAM and LEED, require a form of carbon assessment. This has increased the demand for manufacturers to produce environmental product declarations (EPDs) to support assessments and design decisions at building scale, whilst also being used for product procurement. LCA results are often presented as deterministic values and uncertainty is often ignored. This is particularly dangerous in the case of comparative LCA where, for example, the intention can be to reduce carbon emissions by selecting a product or design alternative with a lower footprint.This paper reviews the approaches for dealing with uncertainties in LCA in general, and in the specific application of LCA to construction products and buildings. Buildings are complex and representing this in an LCA, which is a model of reality, can be challenging. The largest impact savings are achieved during the early stages of design where uncertainty and variability in design are high. Therefore, addressing and communicating uncertainty here is even more critical. Barriers, such as access to uncertainty information in EPDs and the lack of a consistent uncertainty procedure, are discussed. Recommendations for future improvements include reporting of uncertainty information and data quality assessments in EPDs, accessible digitised EPD information and integration of uncertainty analysis in building LCA software. As in previous reviews, both building carbon assessments and traditional LCA, suggest, there needs to be a great improvement in the transparency and reporting of assumptions and uncertainties. This applies to both products, in the form of EPDs, and building LCA results in academic literature and industry reports.
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DOI：
--
发表时间：
2020
期刊：
影响因子：
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作者：
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DOI：
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发表时间：
2012
期刊：
影响因子：
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DOI：
--
发表时间：
2021
期刊：
The International Journal of Life Cycle Assessment
影响因子：
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作者：
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DOI：
--
发表时间：
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期刊：
The International Journal of Life Cycle Assessment
影响因子：
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作者：
Yuwei Qin;S. Cucurachi;S. Suh
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