Sebastian Köln wrote:source
There have been several instances in the past where accidental hydrogen releases have ignited
spontaneously. Whilst these have been investigated, no satisfactory explanation has been produced,
but there have been suggestions that some form of electrostatic charging has been present, resulting in
an ignition. In view of the very low ignition energy of hydrogen, such ignitions are a distinct
possibility. Astbury and Hawksworth (2005) have undertaken a critical review of several incidents
with their postulated mechanisms, and has concluded that there is a distinct possibility that releases
which ignite spontaneously may be of an electrostatic origin.
If you can keep the oxygen out, hydrogen itself can be handled fairly safe – at least compared to a hydrogen-oxygen mixture!
A balloon filled with hydrogen, floating above the shed with the batteries via a tube would be relatively safe, even in the event that it burns.
Assuming your battery bank produces 20% hydrogen and you normally charge … 200W… so 40W in hydrogen. For a decent burn you want something like 2000W, ideally more like 4000W. That means 100h of charging for every hour of cooking.
Jordan Holland wrote: Have you calculated the ammount of HHO required to run your burner, and do you know if the burner will work with HHO? It takes a massive (to me) generator just to run a small torch, and I can't imagine one putting out enough gas to run a burner. Also, if I may ask, why use HHO at all? Not trying to be a downer or anything, but it should use less electricity and probably be safer to use an electric direct resistance element like an electric stove uses.