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6E - Life cycle management (MOP/207) Life Cycle Assessment of Steel Sheet Pressing Processes. Lee, Chang-Gun1, Lee, Sang-Yong2, Lee, Kun Mo3, 1 Centre for Environmental Strategy, University of Surrey, Guildford, Surrey GU2 7XH, U.K.2 Center for Ecodesign and LCA, Ajou University, Suwon, 442-749, Korea3 Center for Ecodesign and LCA, Ajou University, Suwon, 442-749, Korea ABSTRACT- A Life Cycle Inventory (LCI) and Assessment (LCA) on batch steel sheet pressing processes were carried out using LCA iT software, with the objective of identifying the principal "hot spots" or environmental weak points in the processes. Such batch presses deliver compressive loads in the range of 500 to 3500 tonnes. The functional unit was defined as the load delivered to one batch. LCI data on the pressing processes were obtained in the form of correlations relating energy and material inputs to pressing power and process output. The inflows and associated burdens were estimated on a cradle-to-gate basis. Inventory data were obtained from site-specific data in Korea, supplemented by non-Korean databases. Impact Assessment used the Korean eco-indicator method. The resulting database was constructed to provide users with a tool for consistent, transparent and reproducible system-wide analysis of pressing processes and to identify the environmental weak points of these processes. In addition, we obtained several correlation equations with respect to the principal inputs; electricity: Y= 3E-04 X + 2.88E-02, compressed air: Y= 1E-04 X + 1E-02, Mineral oil: Y = 7E-07 X - 4E-05, Lubricating oil: Y= 8E-09 X - 5E-07, (X: compressive load, Y: MJ/f.u or kg/f.u) Key words: Pressing process, Life Cycle Assessment (LCA), Korean Eco-indicator, Corelation equation |
