We have tested quite a few HHO generators - whether commercial or home-built devices - all have the same big problem: OVERHEATING! Most can reach the boiling point within an hour of operation if the current is 10A or higher.
We have tried adding neutral plates, but it did not work well. At one time, I used seven (yes, 7) neutral plates and still the temperature reached to 80 degrees C in an hour in a cell made from a black PVC pipe. The commercial SL50 device we bought works better as it has a casing made of stainless steel which makes the heat dissipate better than PVC or any other non-metal materials. But still it becomes very hot. The temperature outside the casing is measured around 50 degrees C - we taped the temperature probe to the SS casing - the inside temperature must be at least 60 degrees.
Using square-wave or pulse to power the HHO cell does not work too well because the critical issue is that the cell is enclosed and heat does not get dissipated easily from the cell even though the power cuts by 50% or lower using pulse.
Anyway, after trying many things including testing various commercial devices, we have made one conclusion…
All the enclosed cells where the electrode assembly is submerged in electrolyte - let us call them “wet cells” - have this overheating problem. And the problem can go out of control as higher the temperature is, higher the current will become, which in return will drive temperature even higher. Making the casing with stainless steel can minimize the problem but will not eliminate it completely - and it is just too expensive to make the casing all with stainless steel. What is the solution then?
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About Site Admin: Trained as a chemist in the field of electrochemistry (Ph.D. in Physical Chemistry from the University of Calgary supervised by Dr. Viola Birss). So this new way of saving fuel with a cleaner engine exhaust by injecting H2/O2 mixture (HHO) from water electrolysis gets me excited. Currently working on testing various HHO generators and perfecting the electrode design for optimized H2/O2 production.
















