This string has some good data, which could be rounded out with information in my Brown's Gas and HyZor Technology books. It started out with three questions:
1) Where can I find: BTU's / HP / watts per liter of HHO?
2) Exactly how does one check 'the output?'
3) How does one do 'a search' on this type of board?
My answers in reverse order:
3) Ask the forum administrator, I have no idea.
2) Is answered pretty well above. I'll add the comment that most people think that if a little Brown's Gas (aka BG or HHO) is good, a lot is better and that is very much NOT so. More on that elsewhere.
1) I'm wondering if you were asking how much energy there is in BG or how much energy it takes to make BG?
As for the former, I usually direct people to the normal hydrogen:oxygen charts:
Hydrogen = 280 BTU/F3 = 10 BTU/liter = 278.9 (Wh/L = 2.89) Btu/lb = 53,776
But in fact, BG contains energy that is not 'normal' and hasn't been quantified yet. For example, pertaining to these forums, it does an amazing job of increasing the combustion efficiency of carbon-fuels. I'll be posting some of those experiments on my website, hopefully this winter.
As for the latter, I measure the energy it takes to make the BG in watt-hours per liter of BG produced at STP. Traditional Faraday electrolyzers (what I call short-cell or single-cell) typically run about 5 watt-hours per liter. Our series-cell technology typically runs about 2 watt-hours per liter (though I claim 3 watt-hours per liter in my literature).
Getting all the efficiency you can out of your on-board electrolyzer is VITAL to optimizing your mileage gains. It typically takes about 7 watts of fuel (gasoline for example) to make 1 watt of BG. This is because ofd all the inefficiencies of the engine, belt drive, alternator and electrolyzer. So the BG needs to improve your combustion efficiency (increase the power output of your fuel) MORE than 7 watts or you will LOSE mileage. If, by reducing the inefficiencies, you can use 5 watts of fuel to get 1 watt of BG, then you can see how much easier it'd be to gain mileage.
My experiments, over 30 years, have developed several ways to optimize the efficiency of on-board electrolyzers, mostly covered in the books mentioned above. Here I'll round out the comments:
qsiguy Wrote:With all other parameters the same and you add cells in series you will need to increase the electrolyte concentration to get back up to the same amperage. If you only add cells and don't change something else the amps will drop.
I agree with the above statement, except that you should already be using the optimum electrolyte concentration, which is about 25% lye, by weight. I change the temperature. More below.
qsiguy Wrote:The resistance of the electrolyte is not constant in these generators as it changes with heat...
That's one of the keys many people are missing. Most people see this effect as a problem, because if uncontrolled it leads to amperage run-away.
I see it as an opportunity. Use a series-cell electrolyzer of at least 7 cells (can use 8 in some designs), then HEAT it to get the electrolyte resistance down and the amperage up. A lot of factors come together to make this method desireable. Some of the factors are:
1) For efficiency you must do everything you can to lower the resistance in the electrolyzer. Resistance = lack of efficency. Heat lowers cell resistance and thus lowers the voltage needed to push amps across the cell. Amperage makes BG.
2) Adding heat energy to the system, instead of electricity, means you are using energy the engine already wasted, (throwing it off as heat instead of mechanical energy).
3) You reduce the amount of electricity you need to get the same quantity of BG production, because you are pushing less amps across more cells and each cell is making BG. Thus you accomplish the reduction from 7 to 5 watts mentioned above.