Linnard?s hydrogen on demand system without electricity !

[ResinRat2]

What causes the losses? Could it be just heat loss, or hydrogen leakage? Either way, by building the fuel cell internally in future designs both types of losses would be eliminated. Heat would just go back into the reaction to speed it up, and hydrogen would just be recaptured and used.

[Kritikal_Craig]

This concept, along with John Searl's design, are the two devices that I am most hopeful of. I'm trying to be as patient as possible, but I really want to know exactly how this is built.

[ResinRat2]

Sorry everyone,
I added water to the reactor last night, and by this morning (155 hours total elapsed time running) the reactor stopped working. The zinc electrodes are covered with zincates. This is a far cry from running indefinitely like I thought it would.

It's interesting, but I think what motofox just wrote was the key. The large fuel cell, even though it had a potential for a greater output, never did seem to run the fan as well as the smaller fuel cell. So I switched to the larger fuel cell for regeneration and the smaller one for the fan. Perhaps there was too great of loss of efficiency by the large fuel cell to fully regenerate the electrodes. Also, I did have fewer tungsten/carbide electrodes in the reactor this time than in previous occasions.

So I will need to examine my data, and decide if this is worth pursuing.

I feel like I am missing something simple. Something that I failed to do or did incorrectly. I will need to look back and see exactly what I did and try to figure out why this happened.

Very sorry everyone. There may still be potential here, but these initial results did not show it.

I wonder if having the platinum mesh contained inside the reactor solution itself would take care of that problem. Not sure. Need to think.

[TheNOP]

Maybe your expectations are too high regarding this.

What are the chances that the chimical reactions can be more then just balanced ?

If i red the patent corrently one of the reaction is exothermic.
And to quote Mr.Griffin, it is beleived to be in balance with the endothermic reaction.
Unless both reactions are endothermic, i can't see how any OU can flow in.

I am viewing this like a battery with special particularities, it produce hydrogen and/or oxygen.
A solar panel could be use to regenerate the zinc.

[ResinRat2]

If you have a mixture of endothermic and exothermic reactions, the overall reaction (which is the overall combination of all of the reactions) can be endothermic.There is nothing strange about that. I think my problem here is that I need more gas flow, which requires more tungsten/carbide electrodes. The goal is to increase the hydrogen output enough to activate enough electrical output from the large fuel cell to regenerate the zinc. The amount of zinc should not need to be increased at all.

To me this is just another experiment to help steer us in the right direction for the next step. The formation of the zincates (Zn(OH)₂) indicates to me that not enough current was output from the regeneration fuel cell to drive off the oxygen and replate the zinc.

Oxidation: 4OH^- --> 2H₂O + O₂ + 4e^-
                                                   
Reduction: 2Zn⁺² + 4e^- --> 2Zn (This is the re-plating or reduction of the zinc on the zinc electrode)

Adding the two equations together:

Zn⁺² + 4OH^- --> 2H₂O +2Zn +O₂ ( Driving off the oxygen and re-plating the zinc )

Instead it plated as a zincate. So the regeneration fuel cell needs higher output. That will come from higher hydrogen production.

Next step is to boost the hydrogen production by adding more tungsten/carbide electrodes. I will see what I can do about this.

One other thing I want to mention. I want to stay completely away from using solar cells. This thing shouldn't work only when the sun is shining. If that were the case then we might as well just use solar cells and forget this hydrogen unit completely.

I think you know what I mean.