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sjdoyon
11-16-2012, 09:35 PM
Visited one of my relatives sugarhouse in Quebec this week and was introduced to air injection into the back and front pans. Design appeared to be a basic copper piping into the back and front pan attached to a small air pump which releases fresh air into the sap/syrup.

I was told the concept of injecting air results in an increase in the production of light amber syrup and results in the use of less fuel to boil.

Anyone employing the air injection concept or have research/articles on it?
Thompson's Tree Farm
11-17-2012, 05:31 AM
I have air ijection or a "bubbler". Not sure about the increase in boiling rate as the injected air slightly cools the sap. It does make the production of "Fancy" syrup much easier.
DrTimPerkins
11-17-2012, 07:07 PM
Anyone employing the air injection concept or have research/articles on it?

http://www.uvm.edu/~pmrc/air_injection.pdf

The major effect is that you make lighter syrup. It does slightly cool the syrup, so evaporation rate is reduced a little (5% or so).
sjdoyon
11-18-2012, 12:10 PM
http://www.uvm.edu/~pmrc/air_injection.pdf

The major effect is that you make lighter syrup. It does slightly cool the syrup, so evaporation rate is reduced a little (5% or so).

Thank you Dr. Perkins, exactly what I was looking for.
bairdswift
11-18-2012, 12:37 PM
Anyone have any pics of this? Or a better description? What are you useing to make the air?
maple flats
11-18-2012, 05:30 PM
A blower is used for the air. I do not have one but did look at one a few years ago. It is extremely important that the air source is clean or is charcoal filtered. Anything in the air can contaminate the syrup. I felt it was too risky to try.
CBOYER
11-18-2012, 07:04 PM
Anyone have any pics of this? Or a better description? What are you useing to make the air?

http://maple.h2oinnovation.com/en/evaporators/accessories
802maple
12-03-2012, 01:23 PM
It does cool the sap, but with woodfired evaporators it increases the evaporation, because of the constant fake boil releasing steam just like a piggyback, or steamaway. I have witnessed this with a flowmeter several times. With a oilfired evaporator you will most likely not see any change because of the constant heat delivered by these units, but with woodfired arches and their ever changing heat you will.