運輸分野における超長期エネルギー技術ロードマップ(<総説特集>超長期エネルギー技術ビジョンおよびロードマップ)

概要

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In the "Energy Technology Roadmap 2100", the key factors of the technology specifications for the transport sector are "energy-saving" and "fuel switching". There are two energy-saving concepts: saving energy for machine units (vehicles, ships, aircraft), and saving energy with the collaboration of total transport systems. In saving energy for machine units, important tasks are: i) improvement of efficiency of engines and drive systems and ii) weight reduction of body (vehicles bodies, hulls, and airframes). For fuel switching, i) synthetic fuels made of natural gas or coal (for reducing oil consumption); ii) biomass fuel that is carbon-neutral, and finally, iii) shifting to hydrogen and/or electricity that emits no CO_2, are required. Since fuel switching to hydrogen and/or electricity needs a change of engines and drive systems, the fuel switching and improvement of them should progress together. Comparing hydrogen and electricity, hydrogen has the advantage because of its excellent storage density and fueling speed. We assume hydrogen will be utilized for all except short-range automobile and railway. For applications for which use of hydrogen and electricity is difficult, for example aircraft and ocean vessels, we assume hydrocarbon fuel will still be used in 2100.
一般社団法人日本エネルギー学会の論文
2006-06-20