placement of drop flue pan?
I've noticed manufacturers place flue pans at the rear.
Would it increase the rate of evaporation if the flue pan was at the front where the hottest flame is
to expose more pan surface area ...assuming your arch is well designed and has an airtight door?
My thinking is that it has been tried but since you see no manufacturers doing it, the experiment likely said to have the flue pan in back.
Part of that may be that you need the hotter part under the syrup pan or you may not achieve draw off temperature.
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.
I'm certain it's been tried. Since you need to get syrup to a hotter temperature to boil than raw sap, IMO it makes more sense to have the syrup pan at the front where you have the most heat.
4,600 Taps on vacuum
9,400 gallons storage
3 tower CDL RO
3.5'x14' Lapierre Force 5
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www.ennismaple.com
My system is a 48" continuous rear drop flue sap pan with a 1' front finish flat pan.I was wondering
if i use the 48" drop flue pan at the front and draw syrup from it and put the 1' flat pan at the
rear on fire for preheat, would my evaporation rate increase?
...there is one way to find out!
I understand what you are thinking of doing, will this have any affect with your arch and the way your firebox operates? You will need to be extra careful loading wood in the front if you have your drop flues in this area so you do not damage them when loading wood into the arch.
2004 - 2012 2x3 flat pan 25 to 60 taps
2012 2x3 new divided pan w/draw off 55 taps
2018 - didn't boil surgery - bought new evaporator
2019 new SML 2x4 raised flue high output evap. 65 taps
made 17 gal. syrup
2020 - only put out 53 taps - made 16.25 ga.l syrup
2021 - Didn't work out
2022 - 25 taps on bags / 8 taps on 3/16's line - late start
Yes this has been done but the problem lies in getting the syrup off the flat pan. the back is is hotter than the front of the arch. that is why the flue pan is in the back because with lower sugar content less chance of burning.
Blaisdell's Maple Farm
started on a 2x2 pan in 2000 and now
custom built oil fired 4x12 arch by me
Thor pans Desinged by Thad Blaisdell
4600 taps on a drop flue 8-4 split
My understanding is that it's important for the finishing sap to syrup make contact with the flat pan to get good caramelization of the sugar.
Sunrise 2X4 Hobby
Smoky Lake Hybrid Pan
2020
100 Taps
2019
40 Taps
That is only with high ro sap. That is why Sugar makers with 30% or higher use small flue pans with large flat pans so the syrup has time to carmelize. Glen Goodrich use to have a 6x16 evaporator with all flue pans on it with a 2x5 finisher (a big flat pan)next to the arch to finish the syrup on.
Blaisdell's Maple Farm
started on a 2x2 pan in 2000 and now
custom built oil fired 4x12 arch by me
Thor pans Desinged by Thad Blaisdell
4600 taps on a drop flue 8-4 split
That was before Glen had an ro, he was making 40 gallons an hour.
Blaisdell's Maple Farm
started on a 2x2 pan in 2000 and now
custom built oil fired 4x12 arch by me
Thor pans Desinged by Thad Blaisdell
4600 taps on a drop flue 8-4 split
the champion evaporator is flues first 1887 I think
2017 140 taps 30x8 12x16 shack 28.5 gal
2018 158 taps 30x8 12x16 shack with 8x8 kitchen 44 gal
2019 223 taps 30x8 12x16 shack with 8x8 kitchen 36 gal
2020 226 taps 30x8 12x16 shack with 8x8 kitchen 250 waterloo ro 63 gal
2021 230 taps 30x8 12x16 shack with 8x8 kitchen 250 waterloo ro 37 gal
2022 230 taps 30x8 12x16 shack with 8x8 kitchen 250 waterloo ro 55 gal
2023 235 taps 30x8 12x16 waterloo ro 50 gal
2024 54gal
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