Exergy as a Measure of Resource Use in Life Cycle Assessment and Other Sustainability Assessment Tools
Exergy as a Measure of Resource Use in Life Cycle Assessment and Other Sustainability Assessment Tools
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火用作为生命周期评估和其他可持续性评估工具中资源使用的衡量标准
DOI：
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发表时间：
2016
期刊：
影响因子：
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通讯作者：
M. Brandão
中科院分区：
文献类型：
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作者：
Göran Finnveden;Y. Arushanyan;M. Brandão
在生命周期评价和其他可持续性评价方法中，基于火用利用的热力学方法已被建议作为资源利用的度量。这是一个相关的方法，因为它可以捕获能源，以及金属矿石和其他具有相同单位化学火用的材料。本文的目的是说明使用的热力学方法的案例研究，并与其他方法的结果进行比较，从而有助于讨论如何衡量资源的使用。这两个案例研究分别是含铁废物的回收和笔记本电脑的生产和使用。结果表明，不同的方法产生显着不同的结果时，应用于案例研究，这表明需要进一步讨论评估资源使用的方法。该研究也证明了热力学方法的可行性。它确定了能源和金属的重要性。我们认为，热力学方法是从一个坚实的科学基础，并产生相关的决策结果。有效能方法捕获了其他方法认为重要的大多数资源。此外，矿石的组成被证明对结果有影响。还可以进一步发展热力学方法，以评估更广泛的生物和非生物资源，包括土地和水。
A thermodynamic approach based on exergy use has been suggested as a measure for the use of resources in Life Cycle Assessment and other sustainability assessment methods. It is a relevant approach since it can capture energy resources, as well as metal ores and other materials that have a chemical exergy expressed in the same units. The aim of this paper is to illustrate the use of the thermodynamic approach in case studies and to compare the results with other approaches, and thus contribute to the discussion of how to measure resource use. The two case studies are the recycling of ferrous waste and the production and use of a laptop. The results show that the different methods produce strikingly different results when applied to case studies, which indicates the need to further discuss methods for assessing resource use. The study also demonstrates the feasibility of the thermodynamic approach. It identifies the importance of both energy resources, as well as metals. We argue that the thermodynamic approach is developed from a solid scientific basis and produces results that are relevant for decision-making. The exergy approach captures most resources that are considered important by other methods. Furthermore, the composition of the ores is shown to have an influence on the results. The thermodynamic approach could also be further developed for assessing a broader range of biotic and abiotic resources, including land and water.