RE: The End Of Fossil Fuels.
November 19, 2019 at 10:34 am
(This post was last modified: November 19, 2019 at 10:54 am by Alex K.)
Hi @Boru
There are materials which burn at such high temperatures, but for Hydrogen, I *think* the limit is pretty much a couple thousand celsius because you necessarily have the burnt gas present which needs to be heated by the energy of the combustion
And if 1kg of hydrogen gives you 140 MJ, the max temperature you can achieve is whatever temperature 140 MJ can give you when heating that amount of matter (plus the oxygen)
And in this case, the water vapor will still give you the 18% extra because there's a lot of latent heat stored in steam.
What actually happens if you inject water into a 1000°C+ hot furnace is that the heat energy is used to split the water back into its constituents, i.e. exactly the opposite of combustion, with not more but less excess heat coming out (bc the energy is invested in making hydrogen). This can be used industrially to produce hydrogen. It's what happened by accident in Fukushima Daiichi NPP when water came in contact with the overheated core and led to hydrogen explosions. That's why German NPPs habe hydrogen absorbers. One can also do it on purpose, i.e. run a high temperature nuclear reactor for the express purpose of splitting water to make hydrogen fuel.
it's worse, he has it exactly backwards, see my last post
There are materials which burn at such high temperatures, but for Hydrogen, I *think* the limit is pretty much a couple thousand celsius because you necessarily have the burnt gas present which needs to be heated by the energy of the combustion
And if 1kg of hydrogen gives you 140 MJ, the max temperature you can achieve is whatever temperature 140 MJ can give you when heating that amount of matter (plus the oxygen)
And in this case, the water vapor will still give you the 18% extra because there's a lot of latent heat stored in steam.
What actually happens if you inject water into a 1000°C+ hot furnace is that the heat energy is used to split the water back into its constituents, i.e. exactly the opposite of combustion, with not more but less excess heat coming out (bc the energy is invested in making hydrogen). This can be used industrially to produce hydrogen. It's what happened by accident in Fukushima Daiichi NPP when water came in contact with the overheated core and led to hydrogen explosions. That's why German NPPs habe hydrogen absorbers. One can also do it on purpose, i.e. run a high temperature nuclear reactor for the express purpose of splitting water to make hydrogen fuel.
(November 19, 2019 at 10:33 am)Gawdzilla Sama Wrote: I think our genius is ignoring start-up energy and energy loss. Best way to make a perpetual engine, of course.
it's worse, he has it exactly backwards, see my last post
The fool hath said in his heart, There is a God. They are corrupt, they have done abominable works, there is none that doeth good.
Psalm 14, KJV revised edition
