H2 ’s JT coefficient is negative as well.
jd
From: arocket-bounce@xxxxxxxxxxxxx [mailto:arocket-bounce@xxxxxxxxxxxxx] On ;
Behalf Of Stephen Van Sickle
Sent: vrijdag 14 oktober 2016 1:44
To: arocket@xxxxxxxxxxxxx
Subject: [AR] Re: SpaceX failure update
Helium has a negative Joule-Thompson coefficient at those temperatures, so it
actually warms when expanding.
Helium is weird.
On Thu, Oct 13, 2016 at 3:40 PM, Evan Daniel <evanbd@xxxxxxxxx> wrote:
Cold liquid oxygen, and the helium tank chills down a bit further from
the helium expanding into it? They were pressurizing the helium tank
at the same time.
On Thu, Oct 13, 2016 at 6:21 PM, Craig Fink <webegood@xxxxxxxxx> wrote:
On Thu, Oct 13, 2016 at 2:57 PM, Charlie Garcia <dragonrider.hhcc@xxxxxxxxx>
wrote:
Quote from Elon:
“We are close to figuring it out. It might have been formation of solid
oxygen in the carbon over-wrap of one of the bottles in the upper stage
tanks. If it was liquid it would have been squeezed out but under pressure
That brings up the question of how you get solid oxygen from a liquid was
just used to cool a warm tank....
https://commons.wikimedia.org/wiki/File:Phase_diagram_of_solid_oxygen.svg
5500 psi is 0.037 GPa, atm pressure is 1 x 10-4 GPa
That just doesn't sound right.
Where's the list for option 2?
--
Craig Fink
WeBeGood@xxxxxxxxx
