What is the width of the new arch? It has rather wide angle iron, I hope you are not planning that much overlap (pan on the angle iron). The more overlap you have, the less heat transfer to the pans. Also, is that a brace across from side to side, factory built arches don't have a cross brace, at least my old 2x6 and my currant 3x8 don't.
As far as the lack of a ramp, you still want some ramp for better heat flow to the pans. That being said, when I added air over fire (AOF) I built my back wall up so I have an air tube around the fire box with nozzles every 6" , aimed down at an angle. My back wall now only has a 4" tall ramp and it works fine. I don't know if it would be good without the AOF under high pressure.
Last edited by maple flats; 09-25-2020 at 04:39 PM.
Dave Klish, I recently ordered a 2x6 wood fired evaporator from A&A Sheet Metal which I will be converting to oil fired
Now have solar, 2x6 finish pan, 5 bank 7x7 filter press, large water jacketed bottler, and tankless water heater.
Recently bought another Gingerich RO, this one was a 125, but a second membrane was added thus is a 250, like I had.
After running a 2x3, a 2x6, 3x8 tapping from 79 taps up to 1320 all woodfired, now I'm going to a 2x6 oil fired and a 200-425 taps.