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Environmental and energy life cycle analyses of passenger vehicle systems using fossil fuel-derived hydrogen |
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| Affiliation: | 1. Institute of Advanced Sciences (Center for Creation of Symbiosis Society with Risk), Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama, 240-8501, Japan;2. Socio-economic Research Center, Central Research Institute of Electric Power Industry, 1-6-1 Ohtemachi, Chiyoda-ku, Tokyo, 100-8126, Japan;3. Graduate School of Economics, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan;4. Faculty of Economics, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan |
| Abstract: | Hydrogen energy utilization is expected due to its environmental and energy efficiencies. However, many issues remain to be solved in the social implementation of hydrogen energy through water electrolysis. This analyzes and compares the energy consumption and GHG emissions of fossil fuel-derived hydrogen and gasoline energy systems over their entire life cycle. The results demonstrate that for similar vehicle weights, the hydrogen energy system consumes 1.8 MJ/km less energy and emits 0.15 kg-CO 2 eq./km fewer GHG emissions than those of the gasoline energy system. Hydrogen derived from fossil fuels may contribute to future energy systems due to its stable energy supply and economic efficiency. Lowering the power source carbon content also improved the environmental and energy efficiencies of hydrogen energy derived from fossil fuels. |
| Keywords: | Hydrogen energy system Life cycle analysis Input-output tables Fuel cell vehicles Gray hydrogen Greenhouse gas emissions |
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