Eco-efficiency measurement for Hydrogen as an alternative public transportation fuel

摘要

This study aims to identify the environmental and economic aspects of hydrogen pathways as an alternative public transportation fuel using the concept of Eco-efficienc which is estimated using life cycle assessment (LCA) and life cycle costing (LCC) methodologies. The target H_2 pathways are made up of naphtha steam reforming (Naphtha SR), natural gas steam reforming (NG SR), and water electrolysis (WE). Additionally, conventional fuels (Diesel and CNG) are also included as target fuel pathways in order to identify which hydrogen pathway in particular the greatest eco-efficiency over the conventional fuels. Global warming (GW) impact is studied to examine the environmental aspect of each target fuels. And the life cycle costs of target fuels are computed and several key factors are examined to identify the economical feasibilities of target systems. Given that H_2 technologies and infrastructures have yet to be fully commercialized, the environmental and economical aspects of each pathway are analyzed in both their present status and a future scenario in 2015.