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- Newsgroups: sci.physics.fusion
- Path: sparky!uunet!haven.umd.edu!darwin.sura.net!spool.mu.edu!agate!rsoft!mindlink!a752
- From: Bruce_Dunn@mindlink.bc.ca (Bruce Dunn)
- Subject: Re: Missing Oxygen
- Organization: MIND LINK! - British Columbia, Canada
- Date: Sat, 7 Nov 1992 19:07:18 GMT
- Message-ID: <17239@mindlink.bc.ca>
- Sender: news@deep.rsoft.bc.ca (Usenet)
- Lines: 35
-
- \ Tom writes:
-
- This leaves us with no good way to measure the cathode loading. I think
- the resistance is not well known - or even meaningful at high loadings.
- Expansion of the cathode is hard to do, and depends on the shape of the
- cathode. I cannot imagine how to weigh the cathode while it is under
- electrolysis. I have all along assumed that a cell can not be turned off
- and the cathode removed and weighed. It it is, then at least sometimes
- a lot of gas is lost. So what to do????
-
-
- How about this:
-
- 1) While the cell is running, flush the head space of the cell with helium.
- This removes oxygen and prevents the recombiner from eating evolved
- deuterium/hydrogen.
-
- 2) Turn off the helium flush and the cell power at the same time.
-
- 3) Sit back and watch the gas volume expand as deuterium/hydrogen comes out
- of the cathode. When the volume has stopped increasing, it is probably safe
- to remove the cathode. For added protection, you might wish to gently heat
- the cathode in situ.
-
- 4) Remove and weight the cathode to measure anything that is good and stuck
- in the structure.
-
- 5) Loading is determined by the gas evolved by the cathode plus the mass gain
- of the cathode.
-
-
-
-
- --
- Bruce Dunn Vancouver, Canada Bruce_Dunn@mindlink.bc.ca
-