On Tue, 17 Jul 2018 13:33:58 +0100
The Other Mike wrote:
On Tue, 17 Jul 2018 11:46:47 +0000 (UTC), wrote:
the sand, forget this idea of a two minute charge because thats how long it
takes for your hydrocarbon car to refuel to do 600 miles to the back end of
nowhere without stopping for urinating or whatever and realise the average
car
is, with absolute certainty, sat doing absolutely nothing but depreciating
for
many thousands of hours a year. Around half of that almost certainly at
home.
So what? Its the energy that it uses when it is moving thats the issue.
Really?
No wait, what am I thinking - its the energy they use when they're switched
off and not moving that really matters!
When I last commuted to work by car it was a round trip of about 40 miles, say
2 gallons of diesel which is approx 300 million joules of energy.
20mpg from a diesel 'car'? I could nearly get that from a UNIMOG
This involved heavy traffic and is a real world mpg, not what you might have
been suckered into believing in the EU test figures.
Now I don't know about you, but I suspect an extra 240 * 30 = 7.2KW load
multiplied by however many houses have electric cars multiplied by 7 hours
will be quite a bit extra for the local substation to cope with.
How about using real world kWh/distance travelled published for all
commercially
available electric cars rather than 'guessing'?
Guessing? Sorry, was that pre-school maths too complex for you?
Plus get this idea out of your head that everyone today drives around with a
near full tank of hydrocarbon fuel and/or they all need to do x hundred miles a
day and they need to emulate anything even remotely resembling your declared
'charging' regime
There are enough people who do high mileages for whom an electric car
currently is not viable. Sure, for the old lady who only goes to the
supermarket once a week or the guy who drives 2 miles to work and back - win.
27kWh spread across 100 hours per week 'at home', or just 270W when on charge
Recharge with 270W? LOL , yeah ok, if you hardly went anywhere you could
trickle charge on that
Here's some facts for you - a nissan leaf has a 40kwh battery. So to do a full
recharge with 270W assuming no losses would take:
40,000 / 270 / 24 = 6 *DAYS*
Feel free to point out where I've made an error in that. Or do you think a
6 day recharge time is reasonable?