Thank you, Bill, for making this crystal clear !
<< Annoyed by leaf blowers ? https://quietcleanseattle.org/ >>
-- Original Message --
From: "Bill Dube via EV"
To: ev@lists.evdl.org
Cc: "Bill Dube"
Sent: 10-Sep-21 19:04:37
Subject: [EVDL] Danger to public? (was: H2 tank expiration
This is probably what will occur.
Like filling your propane bottle. The attendant will check to see if it
is in date, and reject it if it has expired.
I can't see the dealership turning down the opportunity to "service"
your fuel cell car.
Bill D.
On 9/11/2021 10:48 AM, John Lussmyer via EV
"Fatigue" is the answer to your question.
When you repeatedly stress materials, minute flaws grow and result in
failures. Filling and emptying the pressure vessel results in a fatigue
cycle, and will eventually result in failure of a highly stressed part.
You can bend a coat hanger in half
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On Fri Sep 10 07:52:03 PDT 2021 ev@lists.evdl.org said:
>On 10 Sep 2021 at 13:28, Bill Dube via EV wrote:
>Is it mandatory, though? It seems to be nothing more than a label inside
>the fuel filler door with a date and a finger-wagging advisory, "Vehicles
>with expired hydrogen tanks must not be
What happens to Mirai tanks that have been refueled 300K to 500K
without a tank change? Do they pose a danger to the general driving
public?
Today, as an aside, I drove my Model 3 90 miles at 65 mph with the
equivalent of 3 adults in the car, AC running, and averaged over 5
miles per kwh. I was
Also, H2 is VERY good at escaping things. The atoms are so small.
So while this means it's hard to build a perfect containment system for
it, it also means that if you only have a very small leakit's hard
to build up in a normal (not passive house level of sealing) building,
as it can
On 10 Sep 2021 at 13:28, Bill Dube via EV wrote:
> This replacement cost is another "nail in the coffin" of H2 fuel cell
> vehicles. The cost of a battery replacement is less than the cost of
> _mandatory_ H2 cylinder replacement.
Is it mandatory, though? It seems to be nothing more than a
On 9/10/21 10:52 AM, EVDL Administrator via EV wrote:
On 10 Sep 2021 at 5:04, Peri Hartman via EV wrote:
Maybe the Mirai tank system is really tight. Otherwise, I'm really
curious: why haven't there been any reported H2 explosions ?
Could it be partly because they've sold only about 8,500 of
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On 10 Sep 2021 at 5:04, Peri Hartman via EV wrote:
> Maybe the Mirai tank system is really tight. Otherwise, I'm really
> curious: why haven't there been any reported H2 explosions ?
Could it be partly because they've sold only about 8,500 of them since 2015?
Low sales volume means fewer
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, I was reading a while back that the
> >>> _hydrogen is so light that it would float and disperse_ readily
> >>> generating the idea a HFCEV could be garaged. If I find the article I
> >>> will post it but th
On 9/10/21 7:31 AM, Bill Dube via EV wrote:
There is no doubt that the H2 systems, including the tank, are
thoroughly leak checked. H2 is straightforward to detect in minute
quantities.
However, the world is an imperfect place. Screws fall out. Leaks occur.
I am surprised that they omit
ell-ventilated space makes me want to find an
authoritative source. It may be the difference between a slow leak
and something faster.
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fference between a slow leak
and something faster.
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