Re: restart lasts maybe a minute till next freeze
On 12/14/24 10:07, tomas@tuxteam.de wrote:
On Sat, Dec 14, 2024 at 09:23:33AM -0500, gene heskett wrote:
On 12/14/24 00:52, David Christensen wrote:
On 12/13/24 12:50, gene heskett wrote:
[...]
Screw seagate with a hot branding iron., they used the marketplace to test a
tech that wasn't ready for prime time and likely never will be. In my
employment history I learned a thing or two about helium as I probably
tested the pressure regulatores that gave John Glenn his first rides,
primarily that man has no material that will contain it, the molecule is so
small it walks right thru 2" of monel metal [...]
C'mon. You keep repeating this story. It's simply wrong.
Stellardyne labs in sandy eggo caught the exhausted helium from testing
atlas pressure regulators in a 50,000 gallon steel tank, then a 6 stage
cardox compressor pumped that back into a rack of monel bottles, about
15 of them 12 foot tall. tested with soapy water weekly for leakage. If
you looked closely when the tanks were wet, bubbles could be seen
forming on the outside of the tanks.
Our std night shift procedure was to pump the big tank down to under 2
or 3 psi, which put the bottles up around 7400 to 7800 psi at midnight.
The morning shift at 8AM had 5200 psi to play with till the truck got
there. Around a 2500 diff. Where did the rest of it go?
That, in those days helium was automatically owned by the government and
nominally $100k of it was supplied by 2 or 3 truckloads a week for
leakage makeup. But no leaks were found. Helium, once free, makes a bee
line for outer space, gone forever. What are we going to do when we run
out? Mine a star? Stars are the only other src of it, blowing it all
out in the death throe of a supernova. They make it in the heart of the
star as stage 1 of their life, which our star has been doing for around
5 billion years and will continue to do for another 5 billion.
It's harder to make a helium tight gasket, true. But quite possible.
This is physics, not magic.
you are correct, it is physics. Tell helium that.
Cheers
Cheers, Gene Heskett, CET.
--
"There are four boxes to be used in defense of liberty:
soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author, 1940)
If we desire respect for the law, we must first make the law respectable.
- Louis D. Brandeis
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