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Thread: AUF/AOF for barrel stove evaporator

  1. #11
    Join Date
    Oct 2014
    Location
    Middleburgh NY
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    26

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    Having trouble uploading these to the galleries, but anyway. This is my homemade AOF/AUF. 2x2 steel and 1/2" tubing feed the top and 2" pipe feeds the bottom via an old furnace fan. Haven't tested it yet.

    evaporator.jpgevaporator1.jpgevaporator2.jpg
    2014 6 Taps Block Arch and momas canning pot, 3 gallons YIKES
    2015 12 Taps 55 gallon drum arch 2 steam pans, 6 gallons
    2016 18 Taps 55 gallon drum arch 2 steam pans, 9 gallons
    2017 80 Taps Smoky Lake 2x33 divided flat pan and a 2x3 back pan on converted 275 gallon oil barrel with AUF.
    2018 90 Taps Smoky Lake 2x33 divided flat pan and a 2x3 back pan on converted 275 gallon oil barrel with AUF/AOF.

  2. #12
    Join Date
    Jan 2006
    Location
    Sugarhill NH
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    723

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    With a blower that size had better chain that arch down so it does not fly away:-)
    30x8 Leader revolution, wood fired blower, steamaway/hood. 903 taps all but 54 on pipeline and 3 vacuum systems. Hauling sap this year with a 99 F350 7.3 diesel dump and of course back up is the Honda 450 and trailer.

  3. #13
    Join Date
    Oct 2014
    Location
    Middleburgh NY
    Posts
    26

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    Ha Ha! I thought so too. I actually had holes drilled in the back of the wood box and found out I had to completely close in the box. The air out is not too bad. Still have not yet put a fire in it yet.
    2014 6 Taps Block Arch and momas canning pot, 3 gallons YIKES
    2015 12 Taps 55 gallon drum arch 2 steam pans, 6 gallons
    2016 18 Taps 55 gallon drum arch 2 steam pans, 9 gallons
    2017 80 Taps Smoky Lake 2x33 divided flat pan and a 2x3 back pan on converted 275 gallon oil barrel with AUF.
    2018 90 Taps Smoky Lake 2x33 divided flat pan and a 2x3 back pan on converted 275 gallon oil barrel with AUF/AOF.

  4. #14
    Join Date
    Mar 2006
    Location
    Eden Prairie, MN
    Posts
    1,510

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    red/one:

    That blower will work ok for AUF and with the relatively small duct will not overpower the fire. In fact, you may not get as much air under the grate as you hope. Try it and see.

    But it is the wrong kind of blower for AOF. For that you want a high pressure blower which has a totally different type of vanes, capable of generating at least 4" h20 pressure. That blower is a high volume/ low pressure blower, maybe 1" of h20. If that is what you have there, you will get slow jets of air that will only cool the bottom of your pans and will increase the overall velocity of the combustion gasses so that what heat you do have does not stay under your pans as long.

    To confirm this, put a tube manometer on one of the AOF nozzles and see what kind of pressure you get.
    John
    2x8 Smokylake drop flue with AOF/ AUF
    180 taps on sacks
    60 on 3/16 tubing with shurflo
    Eden Prairie, Minnesota

  5. #15
    Join Date
    Oct 2014
    Location
    Middleburgh NY
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    26

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    Ok sounds like alot of work for nothing but the blower was FREE so I am trying it. I dont know what a mano whatever is. All I know is the top tubes do not really push alot of air and I would rather not cool the pans... I know I need HPLCFM for the top and LPHCFM for the bottom but this is what I've got besides a little 1/50hp 3340RPM blower that I used for AUF last year. I'm trying to get more than 9gph out of this evaporator. Thats what I got last year. Should I try the little blower I have for the AOF? Not much time left...
    Thanks
    2014 6 Taps Block Arch and momas canning pot, 3 gallons YIKES
    2015 12 Taps 55 gallon drum arch 2 steam pans, 6 gallons
    2016 18 Taps 55 gallon drum arch 2 steam pans, 9 gallons
    2017 80 Taps Smoky Lake 2x33 divided flat pan and a 2x3 back pan on converted 275 gallon oil barrel with AUF.
    2018 90 Taps Smoky Lake 2x33 divided flat pan and a 2x3 back pan on converted 275 gallon oil barrel with AUF/AOF.

  6. #16
    Join Date
    Oct 2014
    Location
    Middleburgh NY
    Posts
    26

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    Update: Small blower I have is crap. What is the best blower for AOF. That wont break the bank, very limited budget left.
    2014 6 Taps Block Arch and momas canning pot, 3 gallons YIKES
    2015 12 Taps 55 gallon drum arch 2 steam pans, 6 gallons
    2016 18 Taps 55 gallon drum arch 2 steam pans, 9 gallons
    2017 80 Taps Smoky Lake 2x33 divided flat pan and a 2x3 back pan on converted 275 gallon oil barrel with AUF.
    2018 90 Taps Smoky Lake 2x33 divided flat pan and a 2x3 back pan on converted 275 gallon oil barrel with AUF/AOF.

  7. #17
    Join Date
    Mar 2006
    Location
    Eden Prairie, MN
    Posts
    1,510

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    Free is good! But AOF done wrong can actually reduce your performance. Don’t ask how I know. I think the best blowers for AOF are those made for kids bouncy houses. Nice and cheap. Made to run for long periods. And high output pressure. I replaced my Dayton industrial radial vane blower with one and it is much better.

    You can make a manometer with a piece of clear tubing and some water to check your blower pressure.
    Last edited by RileySugarbush; 01-17-2018 at 05:24 PM.
    John
    2x8 Smokylake drop flue with AOF/ AUF
    180 taps on sacks
    60 on 3/16 tubing with shurflo
    Eden Prairie, Minnesota

  8. #18
    Join Date
    Oct 2014
    Location
    Middleburgh NY
    Posts
    26

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    Just pulled the trigger on a bounce house blower. Tuesday arrival. Stay tuned...
    2014 6 Taps Block Arch and momas canning pot, 3 gallons YIKES
    2015 12 Taps 55 gallon drum arch 2 steam pans, 6 gallons
    2016 18 Taps 55 gallon drum arch 2 steam pans, 9 gallons
    2017 80 Taps Smoky Lake 2x33 divided flat pan and a 2x3 back pan on converted 275 gallon oil barrel with AUF.
    2018 90 Taps Smoky Lake 2x33 divided flat pan and a 2x3 back pan on converted 275 gallon oil barrel with AUF/AOF.

  9. #19
    Join Date
    Mar 2006
    Location
    Eden Prairie, MN
    Posts
    1,510

    Default

    That's great. I think you will like it. What model did you order? My 1HP Koala puts out a pressure of 8" of h20, which results in jet velocities of about 80 mph. The size your nozzles to get the amount of air you want. The key is to only regulate the AOF flow at the nozzles and no where else. You can block the flow for firing, but otherwise you want big pipes from blower to nozzles. I have an Excel spreadsheet for calculating jet velocity and CFM for AOF if you are interested.
    John
    2x8 Smokylake drop flue with AOF/ AUF
    180 taps on sacks
    60 on 3/16 tubing with shurflo
    Eden Prairie, Minnesota

  10. #20
    Join Date
    Dec 2007
    Location
    Minot,Maine
    Posts
    168

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    I am interested John!
    2013 135 Taps 35 on Gravity, 100 on Buckets 11 Gallons Made
    2014 310 Taps 75 on Sureflo 4048, 235 on Buckets, 16'x16' Sugarshack, 5" Filter Press, 2x6 Smoky Lake Hybrid Pan (SOLD) 23 Gallons made
    2015 315 Taps, 17 on Sureflo 4008, 62 on Sureflo 4048, 236 on Buckets 31.25 Gallons Made
    2016 New Northwoods Stainless Finisher and Steamhood
    2017 325 Taps 34 Gallons Made
    2018 150 Taps New Northwoods Stainless 2x6 Raised Flue w/ Air Tight Arch 40+ Gallons Made

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