Dave,

For numbers and comparisons of BTU valves of different fuels with hydrogen
check out this site.  No endorsements H-Ion's  method, but many thanks for
their information layout.

Doug in Japan

http://www.hionsolar.com/n-heq1.html

If I'm reading this table correctly, H2 would be good fuel source for
airplanes by >weight<.

1 lb. of hydrogen >> energy equivalent of 0.469 gallons of gasoline, or
2.81 lbs. of gasoline.

About 1/3 the weight for comparable energy.

Even in liquid form it takes more >volume< to store it.

1 gallon of liquid H2 >> energy equivalent of 0.279 gallons of gasoline.

Perry

Therein lies the rub. Finding enough room in an airplane is always
the limitation on range. One of the severe problems that arises when you convert
a piston engine to a high fuel burn turbo prop.

Paul Lamar
 
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