Whats your average evaporation rate?

[mapleman3]

3 X 8 raised flue, 14" stack, blower, hood and preheater, about 100gph all day , Wood fired with stack temps hovering in the 1400deg range...

[Mark-NH]

Dr. Tim,

Wow, I was really shocked and impressed with efficiency increase of the SAW. Thanks for providing this data. It is great to have an objective resource and I love that you have become an active member.

[ennismaple]

515-550 gph

5 x 14 thunderbolt plus piggyback.

Nice!!! That thing's a Porsche!!!

I've been told to expect 245 USG/hr with our 3.5x14 Force 5 equipped with pre-heater and hood. I'll know for sure by mid April.

[PerryW]

90-100 gph with a 3x10 (3x7 raised flue pan w/ 7" flues).

Wood fired, no hood, no preheater, no blower but always nice dry wood.

[Jeff E]

3x12, with 3x8 drop flue pan, hoods. Wood fired. Average around 100-110 gph.

The real efficiency is matching this with an RO with a concentrate output to match the evaporation rate. My CDL 600 will average 450+ gallons per hour input, 100-110+ output. So my effective rate is 450 GPH.

My RO is usually done about 2 hours before I am done evaporating, so
I think if I add a preheater and up my evaporator capacity by 10%, I will save myself an hour a day. Maybe next year...

[Amber Gold]

I have 2.5x8 raised flue w/ blower and 14" stack. Last year my best was 65 gph with dry/wet/partially green wood. Expecting to see about 70-75 burning dry wood this year. If I add the air bubbler, I might see 80 gph.

Dr. Perkins. That's a great study. Thanks for posting the results.

[Homestead Maple]

Oil fired 3x8 King evaporator with Steamaway. FP + BP = 80 - 85 gph. With FP + BP + Steamaway, evaporation rate is 135 - 145 gals. of sap depending on how clean the Steamaway is and other factors.

[C.Wilcox]

Steam pans, concrete blocks, dry cedar firewood, and a total disregard for my eyebrows gets me a whopping 3-4 gph....excluding syrup production of course.

By my calculations that means I'd only have to add another 340 or so pans to reach Howden86's 515 gph.

[Haynes Forest Products]

3X10 WaterLoo Small oil fired preheater on the best of conditions 120 GPH

[Beans Maple]

3.5 X 10 D&G with 7' raised flue back pans, cross flow fronts, hood, preheater, stack damper, oil fired with "big" nozzles....145 g/hr. Added a CDL steam pan this year so we'll see in about 40 day what the good girl does now.