Thread: Hydrogen Trains
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Old 9th Jan 2019, 01:12
  #33 (permalink)  
Join Date: Jul 2013
Location: Everett, WA
Age: 64
Posts: 2,263
Originally Posted by cattletruck View Post
Ammonia (NH3) is an emerging source of hydrogen and contains more energy than liquid hydrogen for an equivalent volume.

Hydrogen can either be combusted the normal way in existing internal combustion engines or it can be used to generate electricity using hydrogen fuel-cell technology.
But you still have the issue of where do you obtain the hydrogen to make the ammonia? Currently, most ammonia is made using natural gas as the hydrogen source since it's far and away the cheapest was to obtain the H2.
Currently the only truly renewable source of the base hydrogen is electrolysis. ( and that's assuming you use electricity from a renewable source). But it's still horribly inefficient to do so. Much better to just use the electricity directly (e.g. batteries). We'll never have a true hydrogen economy until someone solves the problem of creating the hydrogen in a renewable manner.
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