Morning Dan,
>> At 09:42 AM 2/19/2007, you wrote:
I was anxious to see your reply and comments because you always provide the
points I left out, and do a better job explaining the details.
This is an interesting applications. I think one of two other list members
are using multiple containers and processes other than Terry.
Actual concentration of *useable* silver may vary somewhat due to
variations in the cells and
the electrode geometry, stirring, and things like this.
True, the units should be as precision and identical as possible. This
is true of all aspects even the amount of starter solution. It should be
measured more precisely than if only one process is used.
I think we all agree that parallel is superior to series for a number of
reasons.
With two cells in series, the current will be equal in both cells.
Because this is an electrolysis circuit, the amount of silver released
is directly proportional to the amount of current going through the cell
(silver electrode). Therefore, the two cells will always be exactly
*equal* in concentration of released silver.
I have a little problem with that statement. You even mentioned that
the processes will vary a little.
Agreeing the current will be equal, ...... however the current value is not
what determines the work load going on in each cell.
As one becomes more conductive, the resistance will be lower, and the
wattage will vary with this proportion ( lower than the other unit with a
higher resistance ). If one becomes highly conductive, then a proportional
increase in wattage will result in the other unit.
I do believe they will vary a small amount, but likely too little to be
significant. One batch may be 12 ppm and the other 15 ppm.
The problem with series brewing is that the initial startup will be
slower, with approximately half of the voltage being available at
startup for each cell (two cell brew). If one cell is slower to start,
the other must track it since the current is equal in both cells and is
limited by the slower cell. It may take more than two times as long to
brew as a single cell.
You are almost saying, ( hinting at ) the point I am making.
We need to be very careful when teaching the beginners the theory. The
theory we are talking about applies not only to CS process, but all circuits.
We would not want them to think the current alone determines the wattage. (
Work Performed )
( This is true when only one load exists in the circuit )
As the resistance changes within the process, the wattage will change also
in proportion to the
square of the current times the resistance.
Since we agree the parallel setup will have less problems, this is a bit
trivia.
Brewing cells in parallel will result in all cells brewing in about the
same amount of time (assuming that the power supplies can regulate the
voltage, and provide enough current if it has current control). There
will be some variation in the final concentrations as some cells will
brew faster and some slower.
The simple solution would be to mix all batches together to form one
ppm concentration.
I look at everything as a theoretical design and a mechanical design.
One can have a perfect theoretical design and a less than perfect
mechanical design.
Or Vice Versa, a perfect mechanical design and flawed theoretical design.
I hope we get some facts of the process that Faith uses.
Wayne
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