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Climate Change Debate

Keef

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Lots of people calling him out for being wrong and calling him a prick in the replies, so not all bad
 

Alan

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"Will you be dead of old age before we pay for your sins?"
 

Wilf Wolf

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I keep reading a lot about hydrogen cells being the answer. Does anyone know much about them? Obviously there is a big safety issue but using renewable electricity to produce hydrogen gas makes a lot of sense at face value.
 

AndyWolves

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I keep reading a lot about hydrogen cells being the answer. Does anyone know much about them? Obviously there is a big safety issue but using renewable electricity to produce hydrogen gas makes a lot of sense at face value.
Makes sense to me too, traditional fuels like petrol give you massive amounts of energy for not much space. I believe hydrogen cells are a more realistic bet than batteries for cars.....until the first hydrogen car blows up
 

Tredman

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Got to build up the network for transmission for Hydrogen, its very doable but takes time (and probably the switch off of methane).

I met the Hydrogen director for National Grid the other week - has some great plans, but that all they are..
 

Keef

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JCB are thinking it’s the future fuel for their machines, already got some smaller engines up and running, and sorting infrastructure for them as well, Harry’s garage/farm on YouTube did a video about it
 

visage

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Hydrogen is definitely one to watch. One issue right now is that its generally extracted from natural gas, so thats baaad.

But if we can perfect the technology to use clean energy to split water then that could be very good indeed. Imagine a filling station with a wind turbine on top making hydrogen from clean electricity and its water supply....
 

Alan

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Makes sense to me too, traditional fuels like petrol give you massive amounts of energy for not much space. I believe hydrogen cells are a more realistic bet than batteries for cars.....until the first hydrogen car blows up
Gallium nitride batteries are the future, IMV. Hydrogen is horrendously inefficient for vehicles for some reason IIRC.
 

Tredman

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Hydrogen is definitely one to watch. One issue right now is that its generally extracted from natural gas, so thats baaad.

But if we can perfect the technology to use clean energy to split water then that could be very good indeed. Imagine a filling station with a wind turbine on top making hydrogen from clean electricity and its water supply....
NI Water are about to do it, going to use excess renewables to split water - H2 for transport and O2 for wastewater treatment.
 

proslo

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Batteries aren't as dense in terms of power storage as petroleum fuels, but hydrogen can be, so there's more focus on it in areas where you still need a lot of engine power - industrial vehicles, shipping, aviation, etc.

It has a lot of downsides though, not least that it's so explosive, and right now we don't have a way of producing it at scale without using fossil fuels so it's only potentially green. But a lot of people like the idea of it because it means you don't have to actually adapt too much infrastructure versus batteries. Eg there's a government study underway atm to see if we might be able to use the existing gas grid to pump hydrogen to homes for heating instead, whereas the alternative, a mass switch to electric heat pumps, would bring with it a huge extra demand on the electrical grid, and require a huge investment in upgrading capacity there.

For a lot of applications it's going to be a race between what comes first - higher-density batteries that can match fossil fuels per cubic metre, or clean hydrogen production.
 

sycophantia

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I think Japan are going in hard with Hydrogen, unfortunately some of the Hydrogen they are using (or going to be using) is coming from Australia, where they're burning coal to produce it.
 

The Bear

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Ultimately fusion is the future. In a few hundred years we will hopefully have the technology to be e able to scale it down to commercial vehicles.
 
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AndyWolves

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Feels like we need to find a way of generating electricity in a much greener way whichever route becomes popular
 

Wilf Wolf

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I guess you can justify using fossil fuels to produce hydrogen in the short term if it gives long term benefits. You can’t develop the technology with a supply of fuel.
 

Papper

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On the fence.. wow.
A lot of the stuff the West is doing is just tinkering like getting rid of the ICE etc. Until the likes of Russia, USA, China, Australia, India, Brazil get on board wim fucked, I'm not holding my breath.

We're definately fucked. Do I believe those that devise global strategies have our best interests at heart then it's a big NO. Lot of changes occurring that will impact on lives for a very long time. I'm on the fence because I do not trust any of them.
 
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