Hi Bill,
My plans are twofold. Plan 1, my primary goal, is for a stationary unit for emergency power in the 25 hp range. For this I chose line C of the imbert dimension chart. I used a 50% power factor here. These numbers worked well for me. My new hearth uses the line D dimensions for greater gas production thus being able to run higher hp engine. This unit works well also if you’ve seen my vids. Basically all I did was fabricate a new hearth cone to line D dimensions and bolt it back on the fire tube. Nozzles remained 1/4". To step up I’d have to use a larger firetube and larger shell also. I’m not going there yet.
Plan 2, I will be starting a new build this fall/winter trying to make a shorter more compact unit for mounting on a trailer for both home power and mobile use. My trailer is 6’ wide by 8’ long with a 42" tongue and the deck is 18" off the ground. This puts the top of my cooler 8’-1" off the ground and my burner unit 7’-5" off the ground. The cooler I can run horizontally to lower it considerably, not to mention simplifying the condensate collection and drain. The gasifier char collector I can shorten 6 or so inches and I may be able to shorten my firetube and shell also. I’ll be playing with this on paper soon.
Pepe
