Re: C23 thoughts and opinions

On 6/5/2024 8:29 AM, Scott Lurndal wrote:

BGB <cr88192@gmail.com> writes:

On 6/4/2024 2:21 PM, Scott Lurndal wrote:

BGB <cr88192@gmail.com> writes:

On 6/3/2024 3:23 PM, Tim Rentsch wrote:

scott@slp53.sl.home (Scott Lurndal) writes:
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[ ... (internal-combustion) engines, ... ]
>

It's pretty clear that the ICE is becoming a dinosaur.

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Kind of makes it full circle, doesn't it?  ;)

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Though, annoyingly, there isn't a great alternative in some use cases:
    Batteries: Lower energy density and require charging (slow);

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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.
>

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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, ...

 Many orders of magnitude?  5 minutes (petrol) vs. 20 minutes
(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).
 

>
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).

 Actually, here's where we're going on charge time:
 https://www.fastcompany.com/91016543/scientists-just-invented-an-ev-battery-that-can-fully-charge-in-5-minutes
 

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>
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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.

 Come now, it's more like 5 minutes rather than 25 seconds (that is
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).
 

In a lot of the gas stations I have seen, it doesn't seem like 5 minutes, often more like half a minute.
Granted, not sure the size of the gas tank in the car.
At a "standard" pump speed (~ 9 gal/min), this would imply 4 or 5 gallons or so (from around a half-tank), so maybe a 10 gallon tank?...
Looks it up: Yeah, the car in this case is a 10 gallon tank...
Something like 5 minutes would imply one is filling a roughly 45 gallon tank that was entirely empty (or 90 gallons at half-full).
I would assume a typical car doesn't have one quite so large...
When it still worked, the fuel-economy display was generally around 40 mpg or so.
...