Keep sap in the pan and have the flames hitting the bottom hard. You will get the best boil if the fire is far enough below the pan so the mid tip of the flame hits. Just like when you solder, heat the fitting with the tip of the flame, not the middle. The tip is where the most combustion of the wood gases has occured.
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.
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