>We are currently doing some studies on our copper baths. Recently I have
been given some conflicting information/guidelines regarding cathode to
anode surface area ratios and distances. Could someone please provide me
with their preferences/experience to the following questions.
>
>Q1. When calculating anode area, is only the surface facing the panels to
the calculated or
>       do you calculate the entire circumference?
>
>Q2.  How much anode area should you have facing the panel surface area. The
most recent
>       information I have been given indicates you should have at least an
equal or 1/1 ration.
>       This would result in having at least  7- 21/2" anodes on each 42"
bar or 3 anodes facing
>       each panel with one anode in the middle.
>
>Q3.  I have been told by some suppliers that you never want your anodes
shorter than your
>       panels yet I have recently been advised that my anodes should be
about 2 inches
>       shorter than my panels. I'm interested in getting feed back on this
matter.
>
>All responses will be appreciated.
>
>Ed Cosper


For reference, our logo is the surface distribution of current on a flat
panel from a point source.  This work was done by JPL about 12 years ago and
I snagged a graph and used it as our logo.  You can look at your anodes as
multiple point sources with the edges as the points.  This may help you
visualize what is happening on your panels.  A picture is worth a thousand
words.  I think the original article was in the Journal of Electrochemistry
between '83 and '86.

Logo is at www.remco.com or if you don't wish to see our gross commercial
pages, email me privately at [log in to unmask] and I will email a log.gif
attachment you can look at.  If you use netscape as your email system, tell
me as it doesn't read binhex.

Bob Mesick
Remco Engineering
Environmental Water and Wastewater Treatment Systems
Home: http://www.remco.com

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