Playing with several types of cells in the past year, sorry I havn't posted for a while.
Have made some observations while building and toying with these cells and then did some search's to see if others have the same problems of foaming.
I just hate adding in more chemicals to stop a reaction like foaming.
Electrolytes are bad enough as I have been using them now.
Just one drop of electrolyte left on my leg from a small splash and although I wiped it off it did not help. Bad stuff when left on your skin.
Anyways the foaming of cells has bothered me for a while.
I have made some theory.
This is just my point of view:
Foam is bad, its unfinished water splitting so to speak.
The water split not quite finished comes out in foam and here's why. (Or at least my version).
The feed water rushing back into the cell when the splitting action is happening is being forced or pushed out with the non-completed water split and out comes the foam.
The stuff thats has a sticking bubbly water appearance and not fully split. Its like partially split and still wants to stabilize itself together and wastes space in the cell.
One observed answer is: size of water feed hole back to the cell.
If the outlet hole is a certain size to allow good flow out of HHO gases the inlet fill hole to the cell should be smaller to allow the reaction of this water splitting to complete.
I have several cells I built within the last year and have experimented with inlet and outlet hole sizes and recently finally made this observation.
Although foam also can be created from low quality KOH NaOH electrolytes and or cell contaminations of chemicals or even epoxy's.
The reaction of water splitting leaving the cell has to be fully completed, and if water fill is forced in or has plenty of hole size the flow through the cell may be too fast not allowing the reaction to complete and flooding out the uncompleted water split creating the foam problems.
This is just an observation which may be helpfull for others with the same problem.
Sizing of the water fill should be considered, depending on output and cell size I have seen water fill as small as 1/16" (look at George Wiseman, Eagle Research Hyzor.)
Checking for answers to the problem I did see a valve being used to cut down the flow back to the cell.
The adjustment of water back to the cell should allow the cell to be near filled just before foam would leave the cell.
On cells that do not control water refill because the fill hole is already cut, you need to experiment with that hole size.
