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Climate Change

Lilbaz said:
Hydrogen is very explosive no doubt. But a hydrogen bomb is caused by fusion of hydrogen, you need an atomic bomb to set it off as only that has enough energy to start the fusion process.
We use hydrogen in cars, trucks, ships and planes already. We used it to get to the moon.

Charging vehichles in the city won't be that much of a problem. Every street is powered (lamp posts). We can and have introduced charging points.

Haven't suggested powering planes/ships with batteries.

We are already looking at sulphur batteries that don't require rare metals.

As for inefficiency the most efficent internal combustion engine cars on the market today have an efficiency of 40%. The rest is lost in heat and friction. An ev is between 85-90% efficient.
As for weight, yes batteries are heavy (which is being worked on) but the motor isn't. Far lighter than an engine. No gears etc...
Who cares about how much their car weighs? They care about the cost of running it. Ev's are cheaper to run and have far less maintenance costs as the motor only has 1 moving part.
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There is a German company putting in chargers into lamp posts. There are two near where I live. They are never used. And blocked by other people parking. I wanted to get an EV and use them, but the charging was slow and incredibly impractical if you could even access them. In reality, EVs are still impractical for longer journeys and for charging - sadly they are a step backward for convenience as things stand. Japan is big into Hydrogen, they backed it over batteries. But then Musk really changed things. The focus has shifted to batteries for cars at least. Others points well made and taken on board.
 
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SpurMeUp said:
There is a Germany company putting in chargers into lamp posts. There are two near where I live. They are never used. And blocked by other people parking. I wanted to get an EV and use them, but the charging was slow and incredibly impractical, if you could even access them. In reality EVs are still impractical for longer journeys and for charging - sadly they are a step backward for convenience as things stand. Japan is big into Hydrogen, they backed it over batteries. But then Musk really changed things. The focus has shifted to batteries for cars at least. Others points well made and taken on board.
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I'm not saying everything is in place now. There is work to do but it is being done.

You will probably see less cars in cities in the next decade. Some will ban them. Paris i believe already does it one sunday every month. London seems on it's way. With many roads closed and electric scooter ranks for rent (like the boris bike).
 
K.D.D.D.D.Soc said:
Much as I'm concern as most people nothing is going to change while China Russia and India are 3 of the 4 worst offenders.
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China invests the most in renewables of any country. India are 4th. Yes they are still reliant on coal but they are working on it. Both are building thorium reactors at the moment. If they work well (which they should), they plan to build a lot more.

China has just had a kick up the backside. The high cost of gas and coal has meant blackouts in 2/3 of the country. Not because they don't have any, but the government has a price cap, so rather than sell power at a loss the gas and coal power plants stopped producing. After evergrande this may cause an economic crash in china, a global recession and nobody getting presents at xmas (if they were made in a chinese factory).
 
Lilbaz said:
Depends on what type of power plants. We have peaker power plants that can be turned on and up to full power in 30 mins. That are used to cover intermittent dips. These can be converted (and i believe 1 at least is in the uk) to hydrogen.
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That sounds very promising.

Of course, with a nuclear-based power strategy we don't need to turn anything on and off.
 
scaramanga said:
That sounds very promising.

Of course, with a nuclear-based power strategy we don't need to turn anything on and off.
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Problem with nuclear is only edf are prepared to build them. We had 3 more plants planned to be built but the japenese companies pulled the plug. Problem is the costs of building them keep increasing and the delays are huge. Companies won't risk it.

Rolls royce as i said are planning to produce small modular reactors. These can be built in factories then shipped. Massively cut costs as each would be the same.

Thorium is safe but complex (more so than nuclear) we'll see how china and india get on.

Then we have fusion. We are planning to build the worlds first commercial fusion plant in the uk by 2040. We'll see how that and iter get on.
 
Lilbaz said:
Problem with nuclear is only edf are prepared to build them. We had 3 more plants planned to be built but the japenese companies pulled the plug. Problem is the costs of building them keep increasing and the delays are huge. Companies won't risk it.

Rolls royce as i said are planning to produce small modular reactors. These can be built in factories then shipped. Massively cut costs as each would be the same.

Thorium is safe but complex (more so than nuclear) we'll see how china and india get on.

Then we have fusion. We are planning to build the worlds first commercial fusion plant in the uk by 2040. We'll see how that and iter get on.
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I read about the fusion plant. It's been 10 years since I paid any serious attention to it, but at the time it was only cranks and con artists who were talking about them being realistic. If that's now a viable option it's incredible.

There are a few in the US building the smaller reactors too - I think that makes a lot of sense. We also don't have the waste issues that most countries have as we have Wales and the North in which to dump it all.
 
scaramanga said:
I read about the fusion plant. It's been 10 years since I paid any serious attention to it, but at the time it was only cranks and con artists who were talking about them being realistic. If that's now a viable option it's incredible.

There are a few in the US building the smaller reactors too - I think that makes a lot of sense. We also don't have the waste issues that most countries have as we have Wales and the North in which to dump it all.
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Still a long way to go on the fusion development. Iter has been in the works for a while now. Collaboration of 35 countries. Uk one boris announced in 2019. Planning stage.

https://www.nature.com/articles/d41586-019-03039-9

https://www.iter.org/proj/inafewlines

As for cranks and con artists i believe you're thinking of cold fusion. Fusion we can do, at the moment though we put in more energy than we get out. Apart from hydrogen bombs. Although we are very close to breaking even.
 
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I thought the proposed hydrogen use in vehicles was as a liquid, in the form of plug-in fuel cells? Elevating the flammable issue you get when its a gas
 
Gutter Boy said:
I thought the proposed hydrogen use in vehicles was as a liquid, in the form of plug-in fuel cells? Elevating the flammable issue you get when its a gas
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It will be a liquid. You will fill up like a petrol car. Hydrogen is only flammable when mixed with oxygen. It's why the byproduct that comes out of the exhaust is water.
 
glasgowspur said:
Is that not horribly inefficient?
And if you mean constantly producing with wind and solar, is the big problem with wind and solar not they don't constantly produce?
A cold still night for instance.
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Why does it need to be efficient? It's a infinite/renewable resource. No one worries about how much food supermarkets waste, its just important they always have enough food

Across a large enough geographical area there'll always be a baseline volume of wind (and don't forget solar is powered by light, not sun).
 
Lilbaz said:
It will be a liquid. You will fill up like a petrol car. Hydrogen is only flammable when mixed with oxygen.
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I thought it would more be a laptop-size cell that you plug in (and you exchange your empty ones at petrol stations, like calor gas canisters)?
 
You can own and run a hydrogen car now. But I think there is only 1 or 2 hydrogen stations? And only the Japanese making hydrogen cars.

It solves many of the EV issues. But at the moment it’s not as Green because it takes a lot of electricity to separate hydrogen atoms and then you have storage challenges because it is so explosive.


Sitting on my porcelain throne using glory-glory.co.uk mobile app
 
SpurMeUp said:
You can own and run a hydrogen car now. But I think there is only 1 or 2 hydrogen stations? And only the Japanese making hydrogen cars.

It solves many of the EV issues. But at the moment it’s not as Green because it takes a lot of electricity to separate hydrogen atoms and then you have storage challenges because it is so explosive.


Sitting on my porcelain throne using glory-glory.co.uk mobile app
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Also very expensive. I think it will be used more for trucks/buses. But we'll see. The price will come down as more hydrogen production comes on line. Nissan and toyota obviously think its a good bet.
 
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