Fuel From Water Using Only An Arc Welder

Water, high currents, blinding balls of plasma, and a highly flammable gas that’s toxic enough to kill you in three minutes if you breathe enough of it. What’s not to love about this plasma-powered water gas generator?

In all seriousness, [NightHawkInLight] is playing with some dangerous stuff here, and he’s quite adamant about this one being firmly in the “Don’t try this at home” category. But it’s also fascinating stuff, since it uses nothing but a tank of water and an electric arc to produce useful amounts of fuel very quickly. It’s easy to jump to the conclusion that he’s talking about the electrolytic splitting of water into the hydrogen-oxygen mix HHO, but this is something else entirely.

Using a carbon electrode torch connected to his arc welder, a setup that’s similar to the one he used to make synthetic rubies, [NightHawkInLight] is able to strike an underwater arc inside a vessel that looks for all the world like a double-barreled bong. The plasma creates a mixture of carbon monoxide and hydrogen which accumulates very rapidly in the gasometer he built to collect the flammable products produced by a wood gasifier.

The water gas burns remarkably cleanly, but probably has limited practical uses. Unless you live somewhere where electricity costs practically nothing, it’ll be hard to break even on this. Still, it’s an interesting look at what’s possible when plasma and water mix.

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Building A Gasometer To Store Wood Gas And Other Bio-Fuels

Old solutions are often so elegant and effective that they keep coming back. The gasometer, or gas holder, is one such example. Now [NightHawkInLight] has built one for storing the wood gas he’s been experimenting with, and it’s pretty neat to watch it rise and fall as he first adds gas and then burns it off. The mechanism couldn’t be simpler.

How a gasometer works

For those who, like us, are hearing about this low tech for the first time, gasometers are a means of safely storing gas stemming from the 1700s when gas was king and electricity was little more than a gentleman scientist’s pursuit. In its simplest form, it consists of a container of water with another container filled with gas sitting upside down in the water. Gas pressure is controlled by the weight of the gas-filled container and the water provides a seal, preventing the gas from escaping. Adding gas simply raises the gas-filled container, and removing or using gas lowers it. Simple, safe, and elegant.

We’ll leave the details of how he┬ámade his gasometer to the video below, but suffice it to say that his use of a┬ádouble-walled gas pipe originally intended as a furnace chimney just adds more elegance to this whole hack.

[NightHawkInLight’s] cool projects have graced the pages of Hackaday before. For example, in the area of gas alone there’s his propane-powered plasma rifle, his transparent hybrid rocket engine, and his thermic lance which was hot enough to melt rocks.

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