One of None
The OP has this same thread on sailboat owners, I don't see that wax is going to be the fuel of choice for anyone but back packers. The type of burner/generator is about the same as needed to burn diesel. although in his case it would melt the wax, pressurize the liquid enough to be superheated into a gas when it enters the generator tube, hot plate, or other type super heating device. The residue is sure to be a problem.