Energy Recovery from Engine Exhaust Using Magneto-Hydrodynamic (MHD)
Principle
"...we have fabricated a small device working on MHD
principle, to generate electricity using the engine exhaust
gas..."
https://www.ijert.org/research/energ...V2IS100381.pdf
Not much power but NB that the generator is built to be as quick and cheap as possible and very proof of concept. (India!
)
There's a LOT of room for easy improvement to the shown design and MHD generators are as efficient as 60%!
That's got the attention of governments with some pilot plants around I think and 1 or 2 full scale plants in Russia IIRC.
I also think they tested it in the wrong place and should have had it further back where the superheated steam in the exhaust had cooled to wet steam:
For some reason there's a charge separation during the formation of water droplets of different sizes that results in a LOT of volts!
Don't believe me; look at a lightning storm!
Also leaky steam in industry has been causing sparks and/or shocking people for so long there's safety regulation written around it.
In one case people steam-cleaning oil tanker tanks managed to cause a deadly explosion!
H2O+HCs+heat does=H2+CO and, in this case, probably CH4s and stuff to boot
So anyway: here's another idea not to experiment with and to talk to death instead.