Transcription of Introduction to Life Cycle Analysis (LCA)
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Introduction to Life Cycle Analysis (LCA)
2/19/14 1 Introduction to Life Cycle Assessment (LCA) T. G. Gutowski Department of Mechanical Engineering Massachusetts Institute of Technology 2/19/14 2 Outline general idea of LCA - quantitative method focused on energy and CO2 model LCA - small boundaries LCA -economy wide Steps - regional & world 2/19/14 3 The General Mining Manufacturing Use Phase End of Life 2/19/14 4 Mining Primary Mfg Distribution Use Disposition 0m 8m kipm kopm 0m 8m kipm kopm 0m 8m kipm kopm 0m 8m kipm kopm 0m 8m kipm kopm 0m 8m kipm kopm Recycle, Remanufacture, Reuse Life Cycle Stages (or Phases) 2/19/14 5 Two Steps Life Cycle Inventory (LCI) Resource Emissions and waste Assessment and Improvement + LCI = LCA Pathways, exposure, sensitivity Aggregation, weightings Comparisons 2/19/14 6 Introduction to Product Analysis What is the impact of a product?
Ashby 2013 p142 . 2/19/14 28 Use Phase Estimated energy for cooling: A-Rated Appliances- 0.12 kW/m3 (at 4ºC) and 0.15 kW/m3 (at -5°C) Ashby p 180 . 2/19/14 29 End of Life (EOL) •Recycle •Remanufacture •Reuse •Landfill •Incinerate . 2/19/14 30 4XLFN7LPH DQGD decompressor
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