No, thermal convection can't go too fast.
It's downside is height limitation and heating the water up too much if over done.
Upside is simplicity..
Place a desk lamp close to one side of the container.

ode

At 11:05 AM 6/11/2007 -0500, you wrote:

I want to thank everyone who responded.  One person suggested that the
downside of thermal stirring is that the water actually moves too fast in
the jar which causes fuzzy deposits on the electrodes.  If that's true
then it seems a bubbler would move water even faster, thus causing more
deposits.  I hope Brooks will comment on whether he's seen this.

I'd also like to mention that I never stored a generator unless completely
dry and never set it upside down so that water could run into the motor -
these units are expensive and I'm meticulous about maintenance.  When the
problem initially showed up last year, I did reposition the plastic tube
covering the motor shaft which worked for a while - then it just burned
out completely.  A couple of experts have opined that corrosion is
inevitable when such a motor operates that close to water.

All the suggestions are very much appreciated - its hard being without
CS/EIS for very long.  There are now several options and I'm going to
focus on finding the best alternative stirring method - either heat,
magnetic or bubbler.



Deborah




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