Just wanted some thoughts on this. I have a water voltameter, it came from school and is really old, so old the wires have platinum coatings on the tips for the electrodes! It was a old Griffin and George model.
Anyway normally I use RO water with a single drop of 96% Sulphuric acid added to make it conduct better, the electrode go into separate burette type collectors with taps on the top. I will take some pics in the morning so you can see the set up.
These collectors and the water go into a large glass tube of around 2 ltr capacity, you wack 12V 2A through the electrodes and get one column of Hydrogen and one of oxygen (marvellous). The gases never come into contact with each other.
Now upscaling this, I dont want to use the normal electrodes. I got hold of some really hard, long graphite rods. These are around 3cm thick and 10" long.
I was going to cut them down and seal the copper wire so it didnt come into contact with the water, then just use the graphite ends up into the burettes to get the gas. Heat will be a problem, so 4ltr milk containers filled with saturated salt water and frozen, this gives me ice at around -17C (measured). Crush this and add tap water to make a very cold slurry, place the water tube in the cold slurry.
I have seen anti flash back devices made from copper tube, basically 1/4" tube into 1/2" then 1/4" again, the 1/2" tube was filled with stainless steel fine wool.
I have a method of filling a front wheel tractor tyre inner tube (small one), to a good psi for storing the oxygen (I dont need that often). The hydrogen I will use as its made, one use is for my Gas Chromatograph, the other is for use like an inert gas is on a methane reactor. hydrogen has some advantages over nitrogen for methane production.
Now the questions............
This isnt intended to run for long each time, Would it be better to lower the voltage? its around 24V out of the welder, I am hoping to use around 30A current (lowest setting on the welder). I should be able to make enough Hydrogen to do small GC runs, normally I use Nitrogen but for some apps hydrogen is alot more accurate. buying a cylinder of hydrogen is a nightmare and the rental each month makes it a no go.
Thoughts and suggestion??? And no this isnt for a normal make your car go faster rubbish! This is a serious question at an attempt to produce low pressure reasonable volume Hydrogen. Not too sure what I will use the Oxygen for yet, but it will be stored well away from the house . Yes I have an arduino hydrogen detector for leaks in the GC.
Anyway normally I use RO water with a single drop of 96% Sulphuric acid added to make it conduct better, the electrode go into separate burette type collectors with taps on the top. I will take some pics in the morning so you can see the set up.
These collectors and the water go into a large glass tube of around 2 ltr capacity, you wack 12V 2A through the electrodes and get one column of Hydrogen and one of oxygen (marvellous). The gases never come into contact with each other.
Now upscaling this, I dont want to use the normal electrodes. I got hold of some really hard, long graphite rods. These are around 3cm thick and 10" long.
I was going to cut them down and seal the copper wire so it didnt come into contact with the water, then just use the graphite ends up into the burettes to get the gas. Heat will be a problem, so 4ltr milk containers filled with saturated salt water and frozen, this gives me ice at around -17C (measured). Crush this and add tap water to make a very cold slurry, place the water tube in the cold slurry.
I have seen anti flash back devices made from copper tube, basically 1/4" tube into 1/2" then 1/4" again, the 1/2" tube was filled with stainless steel fine wool.
I have a method of filling a front wheel tractor tyre inner tube (small one), to a good psi for storing the oxygen (I dont need that often). The hydrogen I will use as its made, one use is for my Gas Chromatograph, the other is for use like an inert gas is on a methane reactor. hydrogen has some advantages over nitrogen for methane production.
Now the questions............
This isnt intended to run for long each time, Would it be better to lower the voltage? its around 24V out of the welder, I am hoping to use around 30A current (lowest setting on the welder). I should be able to make enough Hydrogen to do small GC runs, normally I use Nitrogen but for some apps hydrogen is alot more accurate. buying a cylinder of hydrogen is a nightmare and the rental each month makes it a no go.
Thoughts and suggestion??? And no this isnt for a normal make your car go faster rubbish! This is a serious question at an attempt to produce low pressure reasonable volume Hydrogen. Not too sure what I will use the Oxygen for yet, but it will be stored well away from the house . Yes I have an arduino hydrogen detector for leaks in the GC.