Re: Storing H2 at high pressure or cryogenically.
- From: Don Lancaster <don@xxxxxxxxxx>
- Date: Sun, 30 Dec 2007 08:14:26 -0700
Eeyore wrote:
I never was that brilliant at using the gas laws.
Any ideas (or calculations ideally!) how much energy would be needed to
compress stp hydrogen to the 350 or 700 bar figures mentioned here ?
http://www.prnewswire.com/cgi-bin/stories.pl?ACCT=104&STORY=/www/story/07-11-2002/0001761919&EDATE=
I know it depends on temperature rise too, but even assuming it could be
achieved isothermally ? with high efficiency pumps just how much energy
would it take to compress say 1kg or 100kg (1 tonne) of H2 to 350/700
bar ?
Given the phase change additional to LH2, I shudder to think about that
one.
Graham
The approximate intro textbook gas laws fail at higher pressures.
You store much less than you think as the pressure increases.
--
Many thanks,
Don Lancaster voice phone: (928)428-4073
Synergetics 3860 West First Street Box 809 Thatcher, AZ 85552
rss: http://www.tinaja.com/whtnu.xml email: don@xxxxxxxxxx
Please visit my GURU's LAIR web site at http://www.tinaja.com
.
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