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- Newsgroups: sci.physics.fusion
- Path: sparky!uunet!munnari.oz.au!sgiblab!pacbell.com!tandem!zorch!fusion
- From: ub-gate.UB.com!fnald.fnal.gov!DROEGE
- Subject: Status #14 Cell 4A3
- Message-ID: <930126135724.208008fc@FNALD.FNAL.GOV>
- Sender: scott@zorch.SF-Bay.ORG (Scott Hazen Mueller)
- Reply-To: ub-gate.UB.com!fnald.fnal.gov!DROEGE
- Organization: Sci.physics.fusion/Mail Gateway
- Date: Wed, 27 Jan 1993 04:31:57 GMT
- Lines: 34
-
- Status #14 Cell 4A3
-
- "Anomalous Cold" kept increasing. When it got up to the 200 mw level I
- decided that it was time to do something about it. I opened up the
- calorimeter and while everything was live and continuing to operate, smeared
- my favorite black rubber gunk over the likely leak. No success. So I pulled
- the cell out of the spool piece and examined it.
-
- There were two holes burned through the side. Looks the like hot catalyst in
- one of the glass tubes got close enough to the side of the cell to burn a hole
- through it. It is possible that one of the catalyst pieces has jumped out of
- the glass tube and burned its way into the cell wall, but I cannot see clearly
- enough through the semi-opaque polypropylene to say for sure.
-
- So out came the 5 - minute epoxy. Not much inside the cell, but it is at
- least a fair patch.
-
- Now everything is sealed up and again the gas, catalyst temperature, cell
- temperature, and power measurements make sense. Because some liquid had been
- lost during the long period of operation with the leak, we added 4 cc of the
- boric acid mix. Accumulated -energy matched the electrolyte loss only to a
- factor of three. This indicates some vapor loss too. This addition should
- produce an electrolyte boron content of order 400 ppm. Since the addition
- there has been a steady accumulation of gas in the cell.
-
- There is now a small "anomalous heat", 60 mw or so. With the 35 mw one sigma
- claim, this is not significant, but the cell noise level has gone up to 30 mw
- from 15 mw. This does seem to be significant, as I have hundreds of hours
- earlier in this run where it was 15 +/-2 mw. There is a small increasing
- trend, but not possible yet to distinguish the trend from ambient temperature
- effects. We are roughly at hour 820 of this experiment.
-
- Tom Droege
-
-