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Thread: For those that have made an oil tank evaporator...

  1. #1
    Join Date
    Apr 2013
    Speyside, Ontario

    Default For those that have made an oil tank evaporator...

    Anything you would do differently? Anything you would have added or something you didn't need?

    I'm planning on building one and I was going to go with the style of leaving the back section the full height of the tank. Something similar to this one:

    But I was wondering if a fully flat top would be better so I could put preheating pans on that area around the chimney. Something similar to this:

    Any downsides to the second type?
    2015 - 8 buckets, 332L sap, 8.5L syrup - Barrel evaporator, 2 steam pans
    2016 - 8 buckets, 432L sap
    2017 - 10 bags, 470L sap, 9L syrup
    2018 - 20 bags, 1050L sap, 17.6L syrup
    2019 - 20 bags, 970L sap, 22.2L syrup
    2020 - 17 bags, 813L sap, 17L syrup

  2. #2
    Join Date
    Apr 2019
    Nashville, MI


    I have always liked the looks of the first one. I don't believe there would be a downside to either of them. My first one was more like the second model and we used metal coffee cans to pre heat sap. the only difference was they had the stack coming out the back of the evaporator instead of the top.
    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 gal syrup
    2021 - going for 50 bags and 50 on tubing

  3. #3
    Join Date
    Mar 2017
    Saratoga, NY


    I built mine like the first. I think it is a bit more efficient in terms of air flow than the second design. I would go out the back and do more of a hood if I needed a different style.

    My one comment on the first one pictured is that pre heater is not in a great spot as there will be heat on the side of that pan which will potentially leave scorch marks on the side of it and will not let you run it empty.

    I don't find preheating sap to be that important. Better off trickling it in at any temp and it will be fine.

    2017- 17 taps, 3 gallons, stove-top insanity
    2018- 36 taps, 10 gallons, Oil tank evaporator
    2019- 24 taps, 7 gallons
    2020- 27 taps, 5.75 gallons
    2021- 42 taps, 8 gallons

    Oil Tank Evaporator build

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