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

Tom Kendall wrote:

This was a huge problem for Edward Teller and the folks who came up with the
hydrogen bomb:  How to get enough hydrogen into a small enough space, that
when it was compressed by a detonation shock wave (we won't say how), enough
of it would undergo fusion to make the giant fireball.

They solved it.  The method doesn't involve liquid hydrogen, or even highly
compressed gaseous hydrogen.  But it is a highly classified secret, and may
eventually hold the answer for fuel cells, etc.  Problem is, anybody who
discovers how will immediately have the government place their invention
under wraps and them under a gag order.

Maybe someday the human race will figure out how to make technological leaps
without endangering their own existence.  Until then, a "hydrogen economy"
doesn't look very promising.

Tom Kendall

A littler bio on Tom Kendall. Tom is a nuclear power plant engineer.

Paul Lamar
 
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