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Old January 17th, 2016, 04:12 PM
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Default New and improved barrel evaporator for 2016

Well here we are in another season. Sap is flowing in Central Virginia. I think my first boil will be next weekend. So I built a new barrel evaporator again this year. Some of the features I wanted include a system that's easy to transfer to a new barrel, since they don't last forever. I also wanted AUF, it's hard to get enough air in a barrel to have a raging fire without it. I added a pre-heat pan because last year every time I added cold sap my boil took forever to recover. I also made the base easy to transfer to a new barrel without bolts.
The last goal was a complete seal where the pans sat in the barrel top. So let me know what you think!
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New and improved barrel evaporator for 2016-img_1607.jpg   New and improved barrel evaporator for 2016-img_1600.jpg   New and improved barrel evaporator for 2016-img_1595.jpg   New and improved barrel evaporator for 2016-img_1605.jpg  
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Old January 17th, 2016, 05:03 PM
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Nice work looks well thought out and built. I see you went with the deep pans so you will want to keep your levels higher so you don't scorch the sides.

My first home built had deep sides and with the way it was built I had to much heat on the sides and it was burning the sides. I ended up putting in baffles to reduce the side heat. I think a good test boil is going to be fun and informative.

You mentioned that when you transfer sap into your flue pan it kills the boil. I would learn to modulate the amount that you add and try and keep it consistent. Do you have a port on the preheater with valve so you can get a nice slow trickle.

How do you transfer between pans?
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Old January 17th, 2016, 05:29 PM
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Well last year was my first time making syrup, so there is definitely a learning curve. I am considering adding a valve to the preheater. if not just ladle it over slowly. My main pans are not as deep as the preheat pan, but I did get some scorching on the sides last year. Last year I just had a barrel with cut outs to set the pans in. I enjoy the fabrication and all of the welding is TIG. Thanks for your helpful comments. Sam
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Old January 17th, 2016, 06:33 PM
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I would love to see pictures of your AUF setup
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Old January 17th, 2016, 06:50 PM
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Default AUF for barrel stove

It's basically a piece of 3" pipe with 3/8" holes drilled on 3 planes, and an industrial blower with a slide gate damper. The damper is hard to see in the pictures though.
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Old January 17th, 2016, 06:55 PM
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Default Damper

Here's a pic of the damper, just simple. I close it off when adding wood.
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Old January 17th, 2016, 07:11 PM
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Good job I love blast gates its a great way to instantly adjust or shut down the air.
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Old January 17th, 2016, 07:21 PM
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Nice and simple I love it!!

Let us know how it works out
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Old January 17th, 2016, 07:28 PM
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Where did you pickup the blower?
Expensive?


Mine is similar wouldn't mind adding some air




Best addon I have made so far was this pan




Really upped my boiling
It sounds like a V8 when it gets rolling LOL
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Old January 17th, 2016, 08:04 PM
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Looks like Hilburn Fuel Injection from the 50's ha ha. I ran the AUF last year and it did great. Funny, I found a picture of your arrangement when I was designing mine and stole shamelessly! That's why I like to share pictures and details, so somebody else doesn't have to reinvent the wheel! Your rig was an inspiration for sure.. thanks, Sam
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