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Politics : Just the Facts, Ma'am: A Compendium of Liberal Fiction
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To: DavesM who wrote (33249)4/23/2005 3:54:31 PM
From: Lazarus_Long   of 90947
 
Here's the problem:

Storing enough hydrogen onboard a vehicle to achieve a driving range of greater than 300 miles is a significant challenge. On a weight basis, hydrogen has nearly three times the energy content of gasoline (120 MJ/kg for hydrogen versus 44 MJ/kg for gasoline). However, on a volume basis the situation is reversed (8 MJ/liter for liquid hydrogen versus 32 MJ/liter for gasoline). On-board hydrogen storage in the range of 5-13 kg H2 is required to encompass the full platform of light-duty vehicles.
eere.energy.gov

And the reason for that large fuel tank.
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