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| Pete. |
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Pete.
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 Posted: 17:05 - 31 Jan 2019  Post subject: |
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My point is (was) nothing to do with houses or rent or even cost but Mpdarguer's assertion that leccy cars are useless outside of cities. My mate travels up and down the country in his electric car and he loves it. And it's not got anything to do with being 'green' either because he's a confirmed petrol head, aI was shocked to see he'd bought a Tesla.
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132.9mph off and walked away. Gear is good, gear is good, gear is very very good  |
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| bhinso |
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bhinso
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| M.C |
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M.C
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| G |
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G
The Voice of Reason
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| Posted: 18:51 - 31 Jan 2019 Post subject: |
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| bhinso wrote: | Bet the mpg on that would be good.
I remember at uni looking at water powered vehicles, something to do with electrolysis of the hydrogen, can't remember details.
Or alcohol powered. One for you... one for me (stolen from Simpsons  ) |
We looked into this before, a horse puts out more CO2 emmissiins than an average car. All workings were shown and clear.
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| Sister Sledge |
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Sister Sledge
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| Kawasaki Jimbo |
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Kawasaki Jimbo
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Posted: 20:16 - 31 Jan 2019  Post subject: |
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| bhinso wrote: | Bet the mpg on that would be good.
I remember at uni looking at water powered vehicles, something to do with electrolysis of the hydrogen, can't remember details. |
You can get toy cars powered by salt water on a magnesium plate, but the plate is rapidly consumed. It's a cool science experiment though. YouTube is full of conspiracy theories about an "inventor" of water-powered cars being killed to hide the secret. 
Like "pure" electric vehicles, alternative water or hydrogen technologies still rely primarily on power stations (60% fossil fuels, 15% nuclear, 15% wind/tide/solar, some foreign electricity imported onto the grid, 6% wood burning which is classed as 'biomass' and assumed to be sustainable!) to kick things off, making them nearly as polluting as ICE. Factor in the mining of fancy metals like lithium and we're no better off unless you only consider the environment in the immediate proximity of the vehicle; cities don't get as polluted.
| mpd72 wrote: | We looked into this before, a horse puts out more CO2 emissions than an average car. All workings were shown and clear. |
Maybe so but internal combustion engines are putting CO2 into the environment from reserves which have been locked away for millennia, during which the Earth had found a balance without it. Horses (and biofuels  ) consume carbon and recycle it back to the environment comparatively rapidly so it makes little difference. |
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| Pete. |
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Pete.
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| G |
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G
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| Kawasaki Jimbo |
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Kawasaki Jimbo
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| M.C |
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M.C
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| Kawasaki Jimbo |
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Kawasaki Jimbo
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| Posted: 23:09 - 31 Jan 2019 Post subject: |
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Stand down everyone. The Chinese  have discovered the largest North Sea gas reserve in a decade.
https://www.bbc.co.uk/news/uk-scotland-scotland-business-47041270
Edit: wrong thread perhaps, but it makes the point that fossil fuels aren't dead yet, even if it doesn't address the need or otherwise for electric transport. |
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| M.C |
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M.C
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| Posted: 23:14 - 31 Jan 2019 Post subject: |
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| Posted: 23:25 - 31 Jan 2019 Post subject: |
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| G wrote: | | Sister Sledge wrote: | I can imagine the impact on the grid when so many leccy vehicles call by and do a quick fast charge. It'll be like switching on dozens of steel rolling mills.
Electric vehicles do have some plus points but they also create many problems that will need a addressing. Spikes on the grid, public charging points, battery life, price.
I'm just pleased that I managed to enjoy using ICE vehicles during my life time. |
One of the positives of electric vehicles is in the future they can potentially smooth out spikes on the grid - they can be charged when power is cheap, from household solar etc. Then if the owner doesn't plan to use them soon, or plan to use a full charge, can sell that electricity back to the grid when there's a spike in usage. |
Most household solar installations harvest a lot less than people think. In full sun, in summer at midday, 1KW is good. A harvest of 8KwH a day is very good, so it would only take 2 weeks to charge an electric car. Great if you drive at night and charge it during the day.
This time of year my 2 x 100w array on my campervan roof harvests a max of 80wh a day.
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| Riejufixing |
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Riejufixing
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| G |
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G
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| Posted: 23:43 - 31 Jan 2019 Post subject: |
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Right this second we're at around 7GW Nuclear and 6GW Wind - I was expecting the gap to be a good bit bigger than that!
And under 1GW coal. |
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| Kawasaki Jimbo |
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Kawasaki Jimbo
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| Posted: 00:26 - 01 Feb 2019 Post subject: |
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| G wrote: |
Right this second we're at around 7GW Nuclear and 6GW Wind - I was expecting the gap to be a good bit bigger than that!
And under 1GW coal. |
We're at low-moderate demand so they've switched coal off until tomorrow. UK nuclear is close to maximum capacity to give us 20% and it looks like we're buying 2GW from France. Or are we sending them 2GW? Surprisingly, wind is at 50% capacity (how!?) to give us 18% of our current needs. Gas is at half capacity but still supplying almost 50% of our needs. Coal is switched off until demand rises tomorrow. I'll try and check the status at midday tomorrow for comparison. |
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| Sister Sledge |
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Sister Sledge
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| Posted: 11:16 - 01 Feb 2019 Post subject: |
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| Pete. wrote: |
He's in Nottingham today actually, From Kent. Dunno what the hell a heater has to do with it. |
Because providing heat from a battery source is incredibly inefficient, as many of us who build our own campervans know. Without mains hook up, the only option is fossil fuels. Not only that but temperature seriously affects battery capacity. Why do you think Tesla state their range at 20 degrees C? How often is it that warm in the UK?
| Quote: | That's nothing compared to all-electric cars. In 2014, the AAA Automotive Research Center in Southern California published the results of its study that tested how the driving range of three all-electric vehicles (EVs) varied with temperature. At a steady 20 degrees F, the all-electric vehicles travelled a shocking 57% shorter distance on a single charge than they did at 75 degrees F. On average, an EV's batteries transported drivers 105 miles at 75 degrees F, but only 43 miles at 20 degrees F.
Part of the reason for these nasty numbers is because batteries simply don't run as efficiently in the cold. But another big problem could be the way you're warming the car's cabin. Cabin heaters zap large amounts of energy from the batteries. |
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| Polarbear |
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Polarbear
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| linuxyeti |
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linuxyeti
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| Posted: 13:41 - 01 Feb 2019 Post subject: |
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| Polarbear wrote: | When they have some sort of induction charging that works as the car drives along a road it will be feasible. Scalextric without the slots!
But again, the infrastructure costs would be horrendous. |
It's already been shown to be feasible for the majority of road users, it seems like there are lot's of luddites on here afraid of an electric future, where they won't be able to take that sniff of petrol or diesel fumes, oh, and of course, won't be able to make that 'lovely loud' exhaust noise.. I'm sure you could record the sound on yee old casette player and play it loud !! A bit like the kid at school, who strapped a cassette player to his bike, and it played the knight rider theme tune at full whack !!
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| Wonko The Sane |
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Wonko The Sane
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| Monkeywrenche... |
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Monkeywrenche...
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| Posted: 14:49 - 01 Feb 2019 Post subject: |
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It's been shown that the infrastucture couldn't support a mass migration to electric vehicles as well. It's not as simple as the majority only needing to drive within the vehicles (claimed) range, the issues occur when you can't and what happens when all these cars get plugged in overnight.
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Old Thread Alert!
The last post was made 5 years, 78 days ago. Instead of replying here, would creating a new thread be more useful? |
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It would take a shitload of money but it does sound like a solution. Apparently the government have removed the subsidy.
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