John,
These items would need to be run continuously for say six hours, non stop for say three consecutive days. Methinks chemical reactions would a little off putting to be running for that length of time, plus maybe rather costly in the long run, and of course, I would have to supply reams of documentation as to what is actually happening in that chemical reaction.
That is why I am looking for the safest, cheapest and easiest methods possible, where they have to be safe for everyone, as they would be being displayed in public places. That is why I am trying to get low pressure gas accepted as a safe medium to use at certain venues, in a totally rigid setup using mini bunsens, in a contained cage, rather than methylated spirits in a moveable tank, for running engines like flame lickers and other types of Stirlings.
I want to get back onto the display circuit, but now things have all changed regarding safety and public display. As long as I can get my modelling insurance to cover it, then there should be no problems from the display organisers, and for the insurance to accept it, it has to be proved that no one should get hurt by having the safest means possible to achieve the goal.
John