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Electrifying our History

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Oddjob:
AFAIK and this is only my understanding of it but Hydrogen replaces the fuel the engine uses as standard, whether it's compatible with Diesel engines I have no idea. They kept commenting on the only thing coming out of the exhaust is water not Co2 so that led me to suspect the engine is still in place.

Sesman:
Hydrogen fuel, hydrogen engine. But I’ve used hydrogen engines to produce electricity for Data Centres.

Rozabikes Tim:

--- Quote from: Oddjob on December 15, 2022, 05:51:12 PM ---AFAIK and this is only my understanding of it but Hydrogen replaces the fuel the engine uses as standard, whether it's compatible with Diesel engines I have no idea. They kept commenting on the only thing coming out of the exhaust is water not Co2 so that led me to suspect the engine is still in place.

--- End quote ---

2 forms. Hydrogen as a fuel in conventional internal combustion  engine  and then hydrogen cell making electricity for electric motor.

Arch stanton:
And how much electricity does it take to produce Hydrogen?
How inefficient is Hydrogen compared to Petrol & Diesel?

Multiman:
My understanding is
The cheapest way to produce hydrogen at the moment is by extracting from methane but you get left with co2. So not a great solution
You can make it by electrolysis from water but it takes a huge amount of electricity to do so which you could just put into a battery.
If you burn hydrogen in an internal combustion engine using air to provide the oxygen it still produces  nitrogen pollutants and other compounds of anything else in the combustion air
The only way to use hydrogen so you only produce water at the tailpipe is in a fuel cell. This generates electricity to drive electric propulsion.
So in short hydrogen is very expensive to make unless you have masses of excess electricity.
It’s one of the solutions but not cost effect at the moment.
I think there are two places in the uk you can fill up your hydrogen car right now.
We have two cars
One internal combustion
One battery leaf
We charge the leaf at home and it does on average 4miles/kWh
We use the leaf for over 90% of our journeys and the Tiguan for long ones or towing.
If we couldn’t charge at home I wouldn’t have bothered with the Leaf.
Just my 5 penny worths.

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