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weggl Project Page 4

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This Project was last updated on: May 10, 2008 01:40am v7.01

WARNING! Many, if not all of the projects described within these pages, contain dangerous and potentially fatal consequences if you do not exercise proper precautions and follow standard safety procedures. The owner of this site takes no responsibility for injury sustained by anyone attempting to duplicate or utilize any of the information on this site. The information here is strictly for Educational Purposes! -USE AT YOUR OWN RISK!

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Project Description:
Hey Boys,
I may have come up with something here. This unit has 15mm of epoxy above the plates and has a manual float valve water feed. There does not appear to be any current leakage, if there is any it is minimal.
I had run the unit and let the electrolyte level drop to below the top of the plates, the current was 10 amps I then added water to 1/2” over the top of the epoxy and had no current variation except for a fall of about3/4 amp after a minute, due I believe to a drop in temperature. This recovered in about 3 min to 10 amps as the temp rose.

I intend to use the water fill tank as the bubbler, which means that sodium hydroxide vapour will congerate in the bubbler which in turn will re-circulate to the cell reducing the need to top up electrolyte. The tank will have a blow off section.

Will do some yield test tomorrow after I get the top cover installed.
Will post results tomorrow.

Warren.

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This will be the system I am going to use on my next cell.
The last cell I made used this system but instead of Sika Tank I used shoo goo and the bolted together system.
The shoo goo worked ok but there is more allowance for plate expansion with Sika Tank.
Sika Tank is the only product I can find that is completely resistant to super strength caustic solutions.
The effect of having the plates extend beyond the gaskets by 1/4’ and being filled with Sika creates the same principal as Bob’s milled out acrylic sheets but is much simpler and cheaper.
After the gaps are filled a 1/4’ thick layer of Sika Tank the next layer of Sika is trowelled on over the already applied Sika. I say however when applying the Sika that one must work in one direction only, by doing this air is expelled. Don’t go back and forth this will entrap air in the sealant. Once one section has been filled place the next lot on top of the section already done and pull this material onto the area to be done.
The plate area outside the gaskets (which will be 3mm rigid acrylic strips) must be primed with the appropriate Sika primer; this will ensure complete adhesion to the SS plate edges. After the Sika Tank has cured 1/4’ acrylic end plates are glued to the 2 sides and bottom of the 20mm acrylic plates. This provides a 1/2’ gap between the Sika and the outside end pates. This void is then filled with epoxy, poured in from one side allowed to run across the bottom and up the other side, this expels all air.
The self- tappers are screwed through the 20mm acrylic plates into the void that is to be filled with epoxy, this ensures the holding in place of the acrylic plates. This prevents bending of the pates as which happens with the bolt system.
Weggl

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This Website is Created and Maintained by chris--at--OUPower--dot--com (Fix the address for it to work!)
This Project was last updated on: May 10, 2008 01:40am v7.01

WARNING! Many, if not all of the projects described within these pages, contain dangerous and potentially fatal consequences if you do not exercise proper precautions and follow standard safety procedures. The owner of this site takes no responsibility for injury sustained by anyone attempting to duplicate or utilize any of the information on this site. The information here is strictly for Educational Purposes! -USE AT YOUR OWN RISK!

Click Here to go to my YouTube Channel!!

Click Here to go to our NEW Facebook Discussion Group! This is replacing the old Discussion Board!

Click Here to go to our ARCHIVED Discussion Boards.

Please consider donating to help support this website!