"119 miles of range in 15 minutes" is also nowhere near as fast as an IC car "visiting the pump". It does not take 15 minutes to fill the tank on a normal car.
Short of physically swapping out batteries, charging an EC will never be as fast as pouring gasoline into a tank. Transferring that much energy that quickly over wires is ... I don't want to stand anywhere near it. Fillup time is not an are where EC should try to compete.
I never finished school, so correct anything I've got wrong here.
Diesel has a specific energy of 48MJ/kg and weighs 0.832kg/L.
48MJ converts to 13.33kWh. My diesel tank will take 70L from nearly empty. I've never timed it, but it's definitely substantially quicker than 10 minutes to fill.
So I'm transferring about 776kWh in to my diesel tank in <10 mins.
70 * 0.832 * 13.33 = 776.33kWh
So it would take a 1MW charger three quarters of an hour to transfer the same amount of energy. <gasp>
That's to say nothing of a caravan of trucks such as yours with full 70l tanks, barrelling down the freeway.
If three such vehicles pass a given point per second, that's like 144 MW of power, I think!
Comments
"119 miles of range in 15 minutes" is also nowhere near as fast as an IC car "visiting the pump". It does not take 15 minutes to fill the tank on a normal car.
Short of physically swapping out batteries, charging an EC will never be as fast as pouring gasoline into a tank. Transferring that much energy that quickly over wires is ... I don't want to stand anywhere near it. Fillup time is not an are where EC should try to compete.
I never finished school, so correct anything I've got wrong here.
Diesel has a specific energy of 48MJ/kg and weighs 0.832kg/L.
48MJ converts to 13.33kWh. My diesel tank will take 70L from nearly empty. I've never timed it, but it's definitely substantially quicker than 10 minutes to fill.
So I'm transferring about 776kWh in to my diesel tank in <10 mins.
70 * 0.832 * 13.33 = 776.33kWh
So it would take a 1MW charger three quarters of an hour to transfer the same amount of energy. <gasp>
Did I get any of that right?
Seems about correct by energy going into your tank, but not energy actually going to the road later. Divide your result for that by 4 or 5.
That's to say nothing of a caravan of trucks such as yours with full 70l tanks, barrelling down the freeway. If three such vehicles pass a given point per second, that's like 144 MW of power, I think!
The article was corrected to say 5 minutes. See also replies from timsher upthread.