The circular air movement in the chamber has made a difference in yellowing if looking at the tobacco as a whole. Not counting the black sea I have in there (it is not a Flue Cure Variety). In prior runs I would get a degree of variation due to leaf thickness, stalk position, and flue cure variety. With the air flow moving constantly in a motion up one side and down the other of the chamber while keeping heat steady (a 3 degree difference top and bottom to no difference) with 89 to 98% humidity has yellowed much the same. I consider this a break through all this season I have been trying to get a uniform cure with out selecting leaves that are the same (near impossible to do). Also for the first time my stems are turning white and not staying green.
The way I am running the chamber is proving to be a good set-up. Meaning a flue cure can be achieved with a simple heat device, proper air flow, and humidity control. I believe the Cozy Can can be improved if air flow is applied.
An appropriate box for chamber, a dry heat device, a few fans, and manual venting can get you there with a few controls. The humidity while yellowing will be high at start and due to the heat device will slowly drop as yellowing progresses. There is no need for venting when yellowing. But there should be a way for water that will build up on the floor of the chamber to weep out. Venting will need to be done when drying the lamina and stems, this can be accomplished with 2 vents one on top and the other on the bottom of the chamber (they should seal well). The vent on the top should have a fan to draw air out and the vent on the bottom needs only to open.
The Keys: Humidity, Temperature, and Air Flow.
