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Sustainability assessments of alternative powertrains are rarely clear-cut and often involve complex interplays between factors. These range from vehicle parameters and powertrain details, which manufacturers can broadly influence, to customer choices and usage patterns that are far harder to control and predict. We investigated some of the reasons for variations in assessments of vehicles, focusing...
Micro Combined Heat and Power (micro-CHP) generators combine the benefits of the high-efficiency cogeneration technology and microgeneration and is being promoted as a means of lowering greenhouse gas emissions by decentralizing the power network. Life Cycle Assessment of energy systems is becoming a part of decision making in the energy industry, helping manufacturers promote their low carbon devices,...
Waste and recycling resource management is one of the most important application areas of life cycle assessment. This article first points out the importance of using the life cycle assessment in waste and recycling resource decision making, and then analyses current life cycle studies in China of different types of recycling resources, such as scrap iron and steel, scrap nonferrous metals, plastics,...
Blast Furnace Gas (BFG) is an important kind of by-products in the integrated steelworks. Its recycling option considerably relates to the environmental performance of the integrated steelworks. In this study, a specific integrated steelworks in China is selected as the research object. The system expansion method and Weidema's procedure are referenced to resolve the allocation problem. In spite of...
Environmental assessment of photovoltaic systems is a rich field, with representations of many technologies, regions and methodologies. This paper discusses some of the factors that strongly affect the outcomes of studies, encourages detailed reporting of normalization parameters and scope, and discusses a cradle to grave framework for benchmarking life cycle assessments of photovoltaic systems.
Along with the rapid development of the computer industry environment, the contradiction between desktop computers and environments is increasingly prominent. The text analyze the whole life cycle of the desktop computer starting from the concept of sustainable development and the basic concept of life cycle. When finish the matrix of life cycle assessment method according to factors which make effect...
This paper uses economic value metrics to evaluate the retention of value of secondary materials and provides a framework for characterizing value throughout a material and product life-cycle. These economic value metrics are compared with analogous life cycle assessment metrics in order to determine the conditions under which economic value effectively represents environmental impact for EoL material...
Materials selection decisions exhibit great influence on the environmental performance of firms through their impact on processing technology, product form, and supply chain configuration. Consequently, materials dictate a product's environmental profile via the burden associated with extraction and refining, transformation from material to product, product performance characteristics during use,...
A dasiagreen scorecardpsila to identify research projects in the digital printing industry is described. The scorecard is intended to be cognizant of life cycle issues without being onerous to use, allows comparison of green dasiagoodnesspsila among scenarios, provides guidelines for use, and reduces subjectivity by requiring quantified input data. The green scorecard is neither a design tool, nor...
In this paper, we consider interactions between life cycle emissions and materials flows associated with lightweighting automobiles. The study begins by developing scenarios for lightweighting a specific compact sized vehicle based on a Ford Focus. Both aluminum and high strength steel are used, and specific levels of lightweighting are considered between 6% and 23% based on literature references...
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