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The looming challenges of global warming and peak oil have begun to spur the development of alternatives to our current petroleum based transportation system. However, before these alternatives are implemented on a significant scale, it is important to assess these technologies with a broad lens and ensure that they will not introduce more problems than they will solve. In this study, a life cycle...
This work uses hybrid life cycle assessment methods to determine the overall energy use of a commercial LED lamp. Life cycle inventory (LCI) data is built up using industry data for a GaN-based white LED lamp designed to replace conventional incandescent bulbs. Appropriate data are also taken from generic processes in the semiconductor manufacturing sector. By considering the entire life cycle of...
To achieve better fuel economy, automakers are seriously considering vehicle weight and size reduction. This is achieved by using lighter-weight materials like high-strength steel and aluminum, better vehicle design, and offering smaller vehicle models. To consider the effectiveness of these approaches, it is important to take into account the dynamic life-cycle energy and environmental impacts. For...
Corporations and institutions, including the electronics manufacturing and computer services sectors have become concerned with their impacts on climate change and are participating in carbon footprint assessment and climate management discussions. Existing carbon footprint protocols classify carbon footprint into tiered ldquoScopesrdquo: direct emissions as ldquoScope 1rdquo, emissions from direct...
The generation and distribution of electric power is enormously important in both economic and environmental terms. However, despite the obvious importance of electricity for life cycle assessment and policy analysis, accounting for the environmental emissions associated with electricity remains an uncertain task. In this analysis we examine the different methods available for electricity greenhouse...
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