Quote:
Originally Posted by Old Tele man
...something to remember: energy density (BTU per unit) is not the same as octane number (knock resistance).
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Certainly... And a fuel-cell doesn't care what octane number the fuel has (or cetane #, or any other value related to combustion). It is true however that yes, the energy density of methanol (and to a lesser degree ethanol) is pretty damn low (at somewhat less than half of diesel) ~ the saving grace here though is the overall efficiency that could be returned for the full driving-cycle using fuel-cells of this type; offering efficiencies that IC engines (of any type or complexity) can only dream of.