| Topic: Towing with an EV - trip report
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Message posted by tdrees13/12/2021 at 11:12am
Outfit: Bailey Unicorn S3 Vigo + Polestar 2 Location: Northamptonshire
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Quote: Originally posted by iank01 on 12/12/2021
Perhaps with current technology it may be more expensive, however electric is not infinite as we reply on other countries to top up our electric supply.
This is very true, but it's the reason NOT to use hydrogen. Green Hydrogen is produced by using green electricity. The more hydrogen you need, the more electricity you need, but manufacture of hydrogen, and using it are not efficient. I.e. if you use the electricty directly in a battery, you can drive around 2 to 3 time as far for the same original energy.
Also if a network goes done like very recently, they do not have the manpower to restore the area within hours never mind days or weeks. A EV can probably supply a household for about 2 days, but then the EV cannot move and needs to wait until power is restored.
If used carefully, my EV has sufficient battery capacity to run my house for about 5 - 7 days. (running fridge / freezer / heating / lighting / charging phones). I would be entirely possible to run for say 4 days leaving me 20% (40 miles) to go and find a charger to recharge on, and bring that electricity back.
I was under the impression that a hydrogen fuel vehicle was a lot cleaner than any EV as it did not emit NOx fumes plus you do not have to mine and use child labour for the materials which will become very limited in the future and probably more expensive.
Hydrogen fuel cell vehicles do not emit NOx, but they need batteries and other materials in the fuel cell them selves. ICE engines that burn hydrogen DO emit NOx. It's a byproduct of the heat of the combustion process and inevitable if you burn stuff in air (80% nitrogen).
Using child labour in Cobalt artisanal mining in the DRC was stopped some years ago. Have a look at the recent BBC Panorama hatchet job on Tesla to see.http:// https://www.bbc.co.uk/programmes/m0011wn5
That is not to say that child labour definitely does not happen somewhere in the world for some mining (probably lithium), but it that is the case then we need to stop buying mobile phones and tablets and computers. The supply chain for minerals and metals is being cleaned up by companies such as Tesla, Volvo / Polestar, Kia / Hyundai as they see the PR face of their need to be ethical as well as green as being important.
IMHO hydrogen is the way forward even if at the current time it is more expensive to process as it is a lot cleaner plus being more environmentally friendly and does not have to be transported halfway across the world.
I agree Hydrogen is far cleaner than oil or gas, and offers an alternative energy storage and transport mechanism to electricity. But the pure expense of using it will make it a niche solution for places where batteries are not possible (like Aero, shipping, large scale plant equipment, manufacturing etc). For passenger cars, batteries are simply cheaper and more usable for the foreseeable future.