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BGB <cr88192@gmail.com> writes:In a lot of the gas stations I have seen, it doesn't seem like 5 minutes, often more like half a minute.On 6/4/2024 2:21 PM, Scott Lurndal wrote:Many orders of magnitude? 5 minutes (petrol) vs. 20 minutesBGB <cr88192@gmail.com> writes:>On 6/3/2024 3:23 PM, Tim Rentsch wrote:>scott@slp53.sl.home (Scott Lurndal) writes:>
>
[ ... (internal-combustion) engines, ... ]
>It's pretty clear that the ICE is becoming a dinosaur.>
Kind of makes it full circle, doesn't it? ;)
Though, annoyingly, there isn't a great alternative in some use cases:
Batteries: Lower energy density and require charging (slow);
Both of which are an order of magnitude better than just a
decade ago - and both energy density and charge time are
a subject of intense research (both in the automotive
and aircraft industries). I fully expect that energy density
per kilogram will be more than doubled in the next decade.
>
Still pretty far tough to catch up with Ethanol or Gasoline, where it is
also many orders of magnitude faster to refill a fuel tank than to
charge a battery, ...
(supercharger to 80%)? And you can expect the latter to decrease
with time while the former has actually increased in the past few
decades (it used to be faster before self-service pumps were
developed).
>Actually, here's where we're going on charge time:
IIRC, there aren't many battery technologies that can manage a charge
rate much over 1C to 3C (so, getting a recharge time much under ~ 20
minutes or so is unlikely).
https://www.fastcompany.com/91016543/scientists-just-invented-an-ev-battery-that-can-fully-charge-in-5-minutes
>Come now, it's more like 5 minutes rather than 25 seconds (that is
>
>
Vs, say, refilling something like a car in ~ 25 seconds or so at a fuel
pump (but, could potentially be made faster if needed). Though, there
are likely to be limits here short of redesigning the mechanical interface.
almost a gallon a second). Not likely to find those types of speeds
in a self-serve gas station - just for safety sake if nothing else).
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