Prices of the electricity we use to charge

Woosh

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Speak of the Hinkley, he made a vid of that too.. :)
By the time the EPR at hinckley goes into service, the problem with the rods made by framatome would have been sorted.
 
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MikelBikel

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I watched a yt video about how charging networks charge electric lorries for recharging in Germany. The cost is basic kwh, about 15 cents, plus grid charge which varies with demand and supply. There is a proposal to fit a smart meter in the lorry which will tell the driver when and where to charge.
"They have put boulders to block trucks from charging", so he has to drop the trailer and wriggle between rocks, doesn't sound very etruck-friendly! Hehe :)
 
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Woosh

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Different wrinkle, Hybrid truck, diesel and overhead power lines. No batteries!
Too expensive to implement and unreliable, I reckon.
 

soundwave

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fkn cosmic power o_O
 

Ghost1951

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In the summer, I produce 6 times as much electricity as I use, and get virtually nothing for it when I put it into the grid. If I could use it to make and store hydrogen, I'd have enough energy to heat my house in the winter, but there's no domestic process for that at the moment. I can make hydrogen, but I can't keep nor use it.
Have you thought about converting the surplus electricity to heat and storing that in insulated tanks?

You could run the spare power into an immersion heater tank or on a much bigger scale, there is interest in some quarters in making large insulated hot tanks containing very hot sand with heat exchangers etc.


We've probably all split hydrogen and oxygen from water at school or in a back yard experiment, but doing it with any efficiency and being able to store it would be a serious task, and on the scale we are talking about regarding spare power from your roof, probably futile financially. Storing surplus electricity as heat may be different.
 

nigelbb

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Yes - I omitted the transportation loss of the electricity grid, which are ball-park around 10% to 15% and the battery charging loss.

That said - the response I made was about using hydrogen generated from the grid in hydrogen powered ICE engines, and that is a grotesque waste of good electricity, given the inefficiencies of making the hydrogen by electrolysis and then burning it in an inefficient internal combustion engine. and don't forget - the electric power used in electrolysis is subject to exactly the same losses in transport and conversion.

It was certainly not the complete story to use the 80% efficiency of the electric motor, but even when you add - say 10% for transport and voltage conversion and 5% for battery charging losses, the electric motor efficiency, as a transport solution, you are still looking at around 55% to 65% efficiency rather than maybe 20% for the wonderful hydrogen economy - and that does not take account of transporting and storing the hydrogen to fill up stations. It is notorious for escaping almost any kind of containment.

The one place where ice / hydrogen power might be a viable option is in air transport. The power density of hydrogen is way also about three times that of kerosene for air travel, so you would score there - except, I'm guessing you'd need much much heavier tanks to hold it in.

IF we ever ended up with massive amounts of virtually free energy - say from large scale solar thermal made in the Sahara - the price of the electricity would mean that hydrogen generation even inefficiently made would be a goer, but we are nowhere near that now or in the near future.

One pretty exciting development in electric power transportation is the increasing use of HVDC lines with inverters to match the power to the grid. They have really very small losses by comparison to HVAC - especially in under sea cables where AC is pretty poor.
Using hydrogen to power ICE vehicles seems unlikely given the relatively poor energy density of compressed hydrogen. The fuel tank would need to be much stronger & 3x the size.

On the other hand using hydrogen to make synthetic fuel with CO2 from the atmosphere might have been an alternative strategy to use with the existing fuel distribution network. Alternatively hydrogen could be used in hydrogen fuel cells to power the electric motors.
 

Ghost1951

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Alternatively hydrogen could be used in hydrogen fuel cells to power the electric motors.
The ballpark efficiency calculation for fuel cells is that they are about 60% efficient at making electricity from the hydrogen you put through them.

So the rough calculation for a fuel cell goes like this:

  • Transport of electricity from wind farm to electrolyser 10% to 12% loss.
  • Electrolysis process 20% loss
  • Compression of hydrogen ? loss
  • Fuel cell conversion of hydrogen back to electricity 40% loss
  • Electric motor conversion to shaft power 20% loss.

That comes out at an overall efficiency of around 10%

Back of a fag packet jottings, but we still have a better prospect by using batteries - except for air travel.


Battery powered electric motor alternative:
  • Transport of electricity to charging station 10% to 12% loss
  • Charging the batteries 5% to 10% loss
  • Electric motor conversion of electricity to shaft power 20% loss

Overall ball park - fag packet efficiency 38% to 65%
 
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MikelBikel

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If battery cars were wonderfully efficient and economical, then gov wouldn't have to mandate them. They would naturally replace ICE, like ICE replaced horses. Neigh?
 

matthewslack

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And women would have naturally got the vote.
 

Ghost1951

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And women would have naturally got the vote.
I'm sure women ought to have always had the vote. They were pretty much treated as equals in Scandinavia from way back in the Viking Age. One thing that pi ss es me off a bit is teh way modern revisionist historians and the media tend to glamorise the Suffragettes - who were in my opinion a terrorist organisation. They were not the only women campaigning for the vote, which of course they ought always to have had. There were other women campaigning peacefully who had much more effect. The real blow for equality was not struck by the criminal Suffragette's with their bombs and arson attacks and smashing up property, but by the millions of hardworking, law abiding women who worked long hours in factories and offices and hospitals during the First World War.

An AI generated summary of violent acts by the Suffragettes:

The Women's Social and Political Union (WSPU) suffragettes were known for their militant actions, which included:
  • Bombings: Suffragettes bombed buildings, including churches, the Britannia Pier, and the home of David Lloyd George. They also sent letter bombs to politicians.

  • Arson: Suffragettes set fire to postboxes, burned public buildings, and attacked Church of England buildings.

  • Window smashing: Suffragettes smashed windows on private property and government buildings.

  • Destruction of art: Suffragettes attacked artworks and exhibits in museums and galleries, including an axe attack on a painting of The Duke of Wellington in the National Gallery.

Most men in Britain did not have the vote until pretty late on. It was only in 1867 that working men WHO HAD PROPERTY got the vote, and the property requirement for men was not abolished until 1918. My grandfather who was shot in the chest at the Battle of the Somme, but by some miracle survived, did not have the vote until two years after he was shot on July 1st 1916. Since he did not own or rent a property when he signed up to go to war, he could not vote. He also of course was under 21 at the time. Like millions of other young men, he was good enough to be used as machine gun fodder, but not good enough to have a say in who could represent the people where he lived.
 
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MikelBikel

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And women would have naturally got the vote.
And horses came about because feet were banned?
And ICE came about because horses were banned?
And metal came about because rocks were banned?
"We didn't leave the stone age coz we ran out of rocks"! Hehe :) merry Christmas
 

lenny

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flecc

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If battery cars were wonderfully efficient and economical, then gov wouldn't have to mandate them. They would naturally replace ICE, like ICE replaced horses. Neigh?
Neigh.

It's never been about efficiency and economy, it's only ever been about pollution produced by the vehicle.

I.C.E. vehicle exhausts pollute wherever they are.

EVs don't have an exhaust, their "exhaust" pollution is produced elsewhere where it hopefully can be dealt with.
.
 
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lenny

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Consultation launched over petrol car phase-out

"Last month, Ford said the UK government's mandate to produce and sell more electric vehicles (EVs) "just doesn't work" without demand. "

"Labour has said it intends to reinstate the 2030 target as part of its wider commitments to climate change policy, but it will consult on how the "direction of travel" for the policy will work. "


 

lenny

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"Britain’s youngest drivers face drastically higher premiums than their elders. A 17-year-old who has just passed their driving test faces paying £3,075 on average for their insurance, compared to £2,004 last year, according to Compare the Market, the comparison site. "

 

MikelBikel

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Musk won’t become president, Trump insists

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Merry Christmas yo ho ho :)
 

MikelBikel

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Ireland's Interconnector to France under construction. So we can pretend we are net zero and nuekleer free! Ha ha.
Happy Christmas yo ho ho :)