Quote:
Originally Posted by red-beard
Tell me about it. I had to design purge systems for coal gasification fuel systems for gas turbines in the 1990s. You can't purge with air, until after you've purged with something else! They used either CO2 or Nitrogen. My solution was to use methane.
The flammability limit on methane is 20 to 1 (air to methane) on the low end to about 4-5 to 1 on the high end.
Hydrogen is 20 to 1 on the low end and 1 to 20 on the high end! It burns in almost any condition. Very dangerous to attempt to use as a motor fuel!
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Zackly, the worst part about H2 is the LEL to HEL spread. That stuff will burn super rich or super lean, it just doan care.
We use up about 70 million scuffs of it a day here at 2000 psi and it makes me nervous.