1987-11-08

Comparison of Ultimate Fuels - Hydrogen and Methane 871167

The gaseous fuels, hydrogen and methane, are fuels that will likely be in adequate supply when crude oil sourced liquid fuels are scarce. These gases may he used directly in engines, which may need modification or could be used as feed stocks for liquid fuel synthesis. The energy efficiency of using methane and hydrogen in dedicated engines is compared with liquid fuelled engines. Hydrogen gives 6 3% improved efficiency and Methane 39% in city driving and Methane gives slightly improved power but Hydrogen fuel causes a 25% power loss compared with petrol. The storage of Methane in compressed or liquid form and Hydrogen in metal hydrides are compared. The overall efficiency of these gaseous fuel systems are compared, and fuel synthesis is included.

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