Farmer Giles
The biggest tool in the box
On our 3rd Leaf, brilliant cars. Looking at swapping the 14 year old disco for a plug in hybrid in couple of years as most trips are less than 20 miles.
Woody2Shoes":xqzzd0yx said:If you had an ev you could use something like this to plan your journey
https://www.zap-map.com/live/
Rorschach":221hb45s said:it takes me longer to pee than it takes to refuel.
Trainee neophyte":1p8w279j said:The UK consumed 47.1 billion litres of petrol/diesel in 2018. If you say petrol and diesel both contain the same amount of energy - 10kWh/litre (it's close enough for fag-packet calculations, but they don't), then that would equate to 471 billion kWh of new electricity required annually, in the new, green economy. Given the inefficiency of battery storage, it will need to be more than that, but never mind. If you pretend that the energy will be delivered evenly, 24 hours per day, then you need an extra 1.2 billion kWh per day. Sounds like a lot. A billion kWh is, I think, one TerraWatt hour (10¹² Watts), and the average nuclear power station puts out, let's say, 1,000 MWh, or one GigaWatt. You need 1,000 GigaWatts to make a TerraWatt, so the UK will need one thousand nuclear reactors, or equivalent solar/wind/wave installations, all running 24/7. No problem.
The above is just me thinking out loud, and I may have lost track of zeros, so feel free to put me right on the maths.
Yojevol":1v93uvsh said:[
I think your calc needs an extra factor in it.
I agree up to 471billion KWh/year. Lets turn that into MW because that's how we measure power station output. So 471 x 10⁶MW/year. Converting this to generating capacity we must divide it by 365 x 24 hours/year which gives 54000MW. Our present generation of PWR power stations are rated at 1200MW. This means we need 45 new power stations or their equivalent. To that we've got to add on replacement of all existing fossil and nuclear capacity over the next 30 years. It's not impossible, but it's a very big ask.
This takes me back to my early days (1976) in the power station construction industry when I was studying this exact subject. We were contemplating PS construction rates of about 2 per year. As time went on the envisaged max capacity ebbed away to today's rate which is probably something like one every 5 years
So it's very difficult to forecast future needs because we just cannot see how society and the world is going to change. All we know is that something big is going to happen. Personally, I think we have missed the boat on being able to influence global warming. We've just got to try ant ameliorate it as best we can and live (or die) with the consequences.
There's a happy thought.
Brian
Droogs":10vy6fmk said:........THERE ARE MORE PUBLIC BEV CHARGE POINTS IN THE UK THAN THERE ARE PETROL STATIONS. /..... Keith
rgds
RogerS":2dteqdd2 said:Now all you have to do, Keith, is convince my SWMBO !
Style - none unless it's a Tesla
Performance - poor unless it's a Tesla
Handling - poor unless it's a Tesla
And she is a worrier. You'd push her into an early grave if she had to fret about charging points. Which she will. If it was just me then I'd probably buy an EV. If I had the funds. Which I don't.
It's all relative. The Leaf is 0-60 mph is around 7.5 seconds which is a respectable time. But even the slowest Model 3 is 5.3 seconds 0-60 - Tesla really don't have much competition there.Farmer Giles":199cotd0 said:We don't have the faster 60kw , just the 40kw Leaf and it is no slouch and handles fine too. Leaves most ICE cars for dead away from the lights. Inside it's very plush, outside a bit bland as all Nissan's are.
Lets say your ev has a 200 mile range, then it would take you 3 to 4 hours to use that. Do you not stop for a cup of tea (and/or a pee!) after than sort of period?Rorschach":251e8i96 said:Woody2Shoes":251e8i96 said:If you had an ev you could use something like this to plan your journey
https://www.zap-map.com/live/
Yes of course, but that involves a lot more planning for any trip. I can jump in my car right now and drive indefinitely without ever worrying about running out of fuel or where I am going to get it.
It's not just the range and finding a charge point that's the problem though, its the time to charge. Refilling my car takes about 5 minutes to give me 400 or so miles of range. Are there any electric cars that can do this? Best I have heard so far is 1 hour charge for 200miles range and that is not a common feature at all. Even in that best case scenario your journey times are increased by approx 30% due to charging. In a petrol/diesel vehicle your journey times are increased by a matter of minutes if you need to refuel, it takes me longer to pee than it takes to refuel.
The electronics in a car charger are pretty sophisticated and designed to ensure the safety of the user and the grid, for example many have their own earthing point.Trevanion":1kpkye0a said:We used to have a vehicle that ran on LPG, the range anxiety for that was real! :lol: You probably couldn’t use LPG for long runs anymore as it seems petrol stations are tearing out the tanks more and more now.
Out of curiosity because we’ve got thunder rumbling as I’m typing this and recently had a couple of thing a in the house explode, what happens if your car is connected to the grid when lightning strikes?
The leads are usually on the charger. Cars have different types of receptacle on them. Most recent ones have more than one basic difference being speed of transfer.loftyhermes":2vzjs4tn said:Just had a look on the zap map site and it seems that the charging systems use 3 different plugs. No one standard plug, does that mean that you need 3 leads to take advantage of all the charging points?
Not sure what your mrs considers to be style but Mercedes do an all electric crv which looks pretty good. Performance and handling are surprisingly good and as always you get what you pay for.RogerS":21tzzhgs said:Now all you have to do, Keith, is convince my SWMBO !
Style - none unless it's a Tesla
Performance - poor unless it's a Tesla
Handling - poor unless it's a Tesla
And she is a worrier. You'd push her into an early grave if she had to fret about charging points. Which she will. If it was just me then I'd probably buy an EV. If I had the funds. Which I don't.
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