8 Plate series cell (Kumaran)

[kumaran]

Hi,

I did few test yesterday with good and bad results. The electrolyzer went through conditioning process for three days. Poured out the conditioning electrolyte and rinse throughly with distill water. Later fill distill water into electrolyzer and leave it overnight.

On next day, I've prepare new batch of electrolyte for testing. KOH 280 gram and distill water 720 gram (28% KOH & 72% distill water). Power supply on. Got 13.4V across load to pass through 10A.

I find the gas output was good. I just fix safety bubbler with football needle to do torch test. Light up nicely with 2" torch length. Then power off the electrolyzer. Huge loud just shattered the bubbler into pieces ().

Was very dissapointed when it exploded but thank god nothing has happent to the electrolyzer. Also I place the electrolyzer inside big plastic container for safety purpose. In case the electrolyzer explode, the plastic casing may minimize the impact by blocking flying sharp pieces. ().

Then I move on to check the gas production rate. This time my friend came to help me. We recorded 1 min and 35 seconds to fill up 1.5L softdrink bottle. Almost 1LPM at 2.36Wh/L efficiency. Not bad uhh? We measured twice and the figures are the same. I told my friend about the bubbler explosion and he was excited about it. But I don't have other bubbler to repeat explosion.

The 1.5L bottle we use to measure gas output, outputting gas vapour (white mist). My friend asked me to torch the mist and see what happens. I told him, it is just electrolyte vapour with no gas in it. He asked me why not try to light it up. To prove my theory, I agreed and we placed the bottle far from testing area. The mist kept flowing out slowly from bottle cap. Both of us standing nearby with no protection at all. Torch the vapour, another huge loud . This explosion really stunted both of us. The explosion didn't damage the bottle as the top is still open and had enough space to push the flame out. It disputes my theory and I've learned new things.

I tought the gas is lighter to escape from bottle top but its not. Hydroxy gas is still havier gas compared to H2. From this experiment, I hope everybody learns about the danger. I strongly recommend torch test to check bubbler functions. In my test the bubbler failed to pop off and exploded. Just think what will happen when this unit goes into car without proper testing. Now, my task is to make proper safety bubbler. Any suggestions guys?

[MarkinAustralia]

Thanks for sharing the data and the experience. having a loud bang and a scare is a common initiation. My children feared I was trying to blow them up with my experiments.
That raises some good questions about the bubble...I really liked your design.
Mark

[MarkinAustralia]

Hi Kevin,
Yes I would like to lend a hand to Bob as well for a day or two. i will let you know when I am comming
Mark

[kumaran]

[Chris]

[ElectroGasMan]

[ElectroGasMan]

[kumaran]

[nickle989]

[kumaran]

[Beshires1]

[kumaran]

[Beshires1]

[Rich SAS]

[kumaran]