Linnard?s hydrogen on demand system without electricity !

[ResinRat2]

Hi Chris,

Thanks for the little bit of basic electronics knowledge, I will play a bit with the parallel resistor setup.

My voltage has been steady at 0.89 - 0.91 volts and I measured the draw at only 1.48mA for the regeneration. This is consistant with my previous reactor experiments. The draw for the regeneration was always small at about 0.85 volt and around 4 - 5mA; so these numbers don't look out of line.

I would really like the regeneration voltage to be about 0.95 volts to encourage the oxygen to come off so I will need some type of resistor setup between the T/C and zinc. That is a great idea you thought up. So simple, when you think about it, but it never occured to me.

The gas is coming off at a good rate so far. I will keep you posted.

[ResinRat2]

Hi Chris,

I am not at home right now, but last night my apparatus started an odd behavior. My voltage is set at 0.90 volts for regeneration and the hydrogen is flowing off the tungsten/carbide electrode, but it is starting to pulse out the hydrogen gas. By that I mean there is a period of 30 seconds or so where the gas output slows down to a crawl and very few bubbles are produced, then it suddenly surges with hydrogen gas coming off at a fast rate, then it slows down again and repeats the cycle. It has been doing this all night (about eight hours) and was still doing it when I left for work this morning.

It could be that it is dying and on its last leg of hydrogen production. The surface of the zinc electrode looks like a mixture of zincated and non-zincated metal.

Well my voltage has been all over the map with this cell, and I tried quite a few different procedures. So my new cell will have a starting point of 0.95 volts constant regeneration from beginning until it stops. Then I will try different voltages and record everything I see.

[Tacmatricx]

Hi Dave,

I have two cells running right now, trying both configurations.

I have placed a 2.5Ohm resistor across both zinc tungsten junctions and this seems to be working well... I have my supply voltage set to 1.2V and the cell is running between 0.639V and 0.640V until it charges and then I expect it to jump to over 1V. I am seeing good gas production on the zinc electrode and the tungsten, while not producing as much gas as before is chugging away at approx 50% of what it was. Looks stable and will try to keep the voltage jst low enough so I am not getting any gas coming off the regeneration tungsten electrode.

Will let you know how it goes.

Chris

[ResinRat2]

Nice Chris,

Eyeball the gas rates as best you can. You want that 2:1 ratio of hydrogen coming off the tungsten to oxygen coming off the zinc.(I guess I just stated the obvious). I am glad to hear you are getting gas off the zinc. This is the key to the whole objective and it makes me glad that you are able to do this. If the gas doesn't come off the zinc at a good enough rate then you are just forming zincates.

Well my cell is at a crawl right now. I am going to start a new one like I stated. I couldn't get to it today because I was too busy. I am working long hours now, and I am going to a class at my local college during the day, so my day is getting longer. Probably by Thursday or Friday.

I am glad you are doing your experiments. This should be very interesting!

[Tacmatricx]

Hi Dave,

I have to say I'm really impressed by the little cell I have built running in an 18ml test tube. The zinc electrode is producing a good quantity of gas and I have tuned it to a point just below where the regeneration tungsten starts to produce bubbles. It's stable at around 0.98V @ 0.2mA at the moment and the zinc has formed a nice even coat without the usual irregularities.

Gas is coming off at a decent rate but not high enough to cloud the cell like the original shorted circuits now that I have the resistor in there.

Will keep you posted,

Chris