Sap Preheater Pic for Eberzin

[dadtkm]

Hi David , being able to remove when not in use is a good thing. My first pre heater was tubing wrapped around the stack and every time I started to run sap through it started with nasty green stuff that I had to catch so that it didn't get into the pan. Here's what I use. When the pan starts to boil I put the pre heater in place and remove it when I'm finished.IMG_20150313_175638_334.jpgIMG_20150313_182518_500.jpg

[Johnny Yooper]

2020 update on my copper coil preheater shown in the top of this thread - since that picture, I doubled the length of the copper coil, and continue to wrap it with aluminum flashing to minimize heat loss around the coil, did some experimenting with and without the blower running for air under fire....incoming sap temperature was ambient, so in the 40's; without running the AUF, sap exit temperature around 160 to 170F, but with the AUF and the rig really rocking the sap temperature increased to 194F, so I'm raising sap temperature by 150F just by using heat going up the stack, pretty satisfied with the results.

[Kchamp]

I have been thinking of doing this, what size cooper line did you use? any more pics?

[Johnny Yooper]

I have been thinking of doing this, what size cooper line did you use? any more pics?

I believe it's 1/2 inch trade size flexible copper tubing, but I'll verify when I get to the shack to take some pics, should have them on here in a day or two.