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In the discussion thread: Cooking with Hydrogen, Indian Style [View all]

Response to procon (Reply #2)

Mon Mar 23, 2015, 03:05 PM

3. But you need electricity to make the Hydrogen.

The problem with all of the Hydrogen ideas is that it takes a significant amount of energy to isolate the hydrogen, usually electrical energy. Hydrogen is never just by itself and ready to use. Hydrogen is almost always just a temporary storage form for other energy sources.

In this case, they are keeping it simple. DC electricity is passed through water breaking down the bond in the water from H2O to H H O. They seem to not be trying to separate the hydrogen and oxygen which is a flammable (and possibly explosive mixture called Brown's gas) that they immediately re-burn which yields heat and H2O vapor.

Again you must have a source of electrical energy to make the HHO gas which is burned to yield the heat for cooking. And the energy in to make the gas will be greater than the energy delivered as heat for cooking.

It is usually more efficient to just turn the electrical energy into heat directly. I am having a hard time seeing the advantage of this one.

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