Electrolysis can be used for many purposes. You can use it to split particularly hard compounds, electroplate metals and form new compounds that without it would otherwise be impossible. These only name a few of it's possibilities. I am interested in only one.
As long as we choose the correct electrolyte that does not react during the process, we can split water molecules into Hydrogen and Oxygen. It is true, that the more power you apply to a cell, the more product you get.
Unfortunately, as we apply more power to our cell in an effort to get the most HHO possible, we run the risk of producing more heat. This heat generated is wasted energy, and can wreak havoc on your entire setup. It can melt down components and even boil the electrolyte, sending unwanted moisture and caustic condensate down the line. If you are using an electrolyzer in your automobile, this can mean disaster to the internal engine components. Potassium Hydroxide (KOH) condensate will dissolve an engine's aluminum internal components!
Many have tried to combat this issue by applying cooling alternatives to reduce the temperature of the electrolyte and electrolyzer. Regardless of how you try to keep the heat at bay, dumping too much power into your cell is not the answer. So with all this possibility of ruin and catastrophe, what can we do? Let me give you my opinion.
Many have become concerned with electrolyzer efficiencies. The more efficient the better, right? Well, yes...and no. It's like my High School Organic Chemistry teacher once told me when we were talking about the fuel economy of a gas powered automobile. Sure, we want a vehicle that is more efficient. It costs less, right? Not necessarily. It is more important what the price per mile is, rather than how far the automobile can travel on a gallon.
You are probably shaking your head right now, right? Let me explain. Isn't it amazing that in the midst of higher efficiency automobiles, the more expensive the price of fuel is? If you are driving a vehicle that gets 21 MPG and the price of fuel is $1.29 (1990's) per gallon, your price per mile for fuel is $ .061 cents per mile. If you are driving a vehicle that gets 42 MPG and the price of fuel is $2.58 (2009) per gallon, your price per mile is $ .0305 cents per mile. Yeah...think about it. But what does that have to do with you and your electrolyzer? Well, my point in all that was to say, keep it simple. Sure we want to make the most efficient electrolyzer, but an electrolyzer that produces 3LPM and has a super high efficiency still only produces 3LPM. It doesn't matter how elaborate the design is, the output of an electrolyzer is limited by the amount of surface area of its electrodes. An elaborate design won't necessarily get you ahead. When you are designing your electrolyzer setup, keep in mind what it is costing you, vs how much HHO you think you will need.
Back to Voltage vs Amperage. The more surface area an electrolyzer has, the more HHO it can produce using the same wattage. This is the main factor that determines how much HHO an electrolyzer can produce. For the most part, we have found that using higher voltage with lower amperage produces better results with less effort and less waste in the form of heat. It's like using a sprinkler pump hooked up to 110 volts, vs 220 volts. The pump wired for 220 volts doesn't work as hard to produce the same result. Why? because a 110 volt motor will require twice as much amperage as a 220 volt motor. The same principle applies to an electrolyzer. If we can produce the same amount of HHO using far less amperage then we are far better off. This means our electrolyzer is less likely to heat up and break down the electrolyte , or worse, start overheating and melting wires.