Dynamic life cycle assessment: framework and application to an institutional building

摘要: This paper uses a dynamic life cycle assessment (DLCA) approach and illustrates the potential importance of method using simplified case study an institutional building. Previous (LCA) studies have consistently found that energy consumption in use phase building is dominant most environmental impact categories. Due to long span buildings for changes usage patterns over time, shift toward DLCA has been suggested. We define as LCA which explicitly incorporates process modeling context temporal spatial variations surrounding industrial systems. A mathematical model used incorporate information from building, temporally explicit sources inventory data characterization factors, where available. The was evaluated historical projected future impacts existing with additional scenario development sensitivity uncertainty analysis impacts. Results showed overall varied greatly some categories when compared static results, generated perspective either building's initial construction or its recent renovation. From perspective, related criteria air pollutants were reduced by more than 50 % LCA, even though nonrenewable increased 15 %. Pollution controls major reason these reductions. In analysis, baseline decrease all LCA. outer bounds slightly higher strongly lower indicating general robustness decline across scenarios. These findings support increase relevance results. cases, decision making design operations may be affected considering interaction multiple steps results suggest during lifetime can influence greater degree material phases. Adapting usefulness assessing performance other complex systems built environment.