03-03-2014, 03:20 PM
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#1 (permalink)
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Ammonia as carbon-free fuel
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03-03-2014, 03:29 PM
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#2 (permalink)
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...beats walking...
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It's ironic you bring this up, because I recall reading a science-fiction story--many, many, years ago--about a planet where oxygen was "fuel" for spacecraft (and crew) because the planet's atmosphere was 'azine' (ammonia: NH3).
Last edited by gone-ot; 03-03-2014 at 04:07 PM..
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03-03-2014, 03:39 PM
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#3 (permalink)
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SDS nh3
FIRE AND EXPLOSION HAZARDS:
The minimum ignition energy for ammonia is very high. It is approximately 500 times greater than the energy
required for igniting hydrocarbons and 1000 to 10,000 times greater than that required for hydrogen.
Well we have got Proven hydrogen burners so what if its a long shot.
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03-03-2014, 03:54 PM
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#4 (permalink)
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Sounds like a diesel "spark plug" would be just the ticket.
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03-03-2014, 04:04 PM
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#5 (permalink)
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the sad part is
this came from a legal document...
----1000 to 10,000 -----times greater than that required for hydrogen.
That sure is a spread how can they list that?
Mabe it needs to be added to the horse shoes and hand grenades column??
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03-03-2014, 04:17 PM
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#6 (permalink)
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...beats walking...
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...by the numbers:
............Min......Auto
............Ign......Ign.
............Energy...Temp.
------------------------------
Hydrogen...0.016mJ...500-571ºC
Gasoline......30mJ...246-280ºC
Ammonia......680mJ...651ºC
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03-03-2014, 06:14 PM
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#7 (permalink)
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yeah, super-high static compression ratios(even in the diesel world) and compression ignition looks like the only possible way to get it burning reliably.
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03-03-2014, 10:15 PM
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#8 (permalink)
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...beats walking...
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...and, at those CR's the oxides-of-nitrogen would be horrendous.
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03-04-2014, 12:25 PM
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#9 (permalink)
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Making enough ammonia to meet agricultural and motor fuel with out natural gas is not going to happen for quite a long time.
I agree, the diesel spark plug would be the ticket (ammonia intake fumigation of a diesel engine).
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03-04-2014, 12:58 PM
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#10 (permalink)
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Ok so lets digress
Ammonia out.
Carbon based fuels running out.
Hydrogen usefull but not feasible.
Wind and solar is same but better just dont talk about the amount of carbon based fuels used to manufacture and maintain.
Geo thermal is very similar yet again different too in its quantifications.
Has anyone talked about the Vast Lakes of frozen Methane under the sea and also under polar caps?
It is supposed to be one of our end all situations as global warming causes melting and fracking even now it has been implied to be already started.
Why wait till later lets use it now and save carbon based fuels for thier own special purpose.
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