Thanks for your reply, the idea of a fan for each tray or may be a fan for each column is a great one, the case is critical enough for this not to be overkill. Also, the paper is very useful, thank you.
I have a rectangular duct about 1 meter wide, 1 meter high and 6 meters long, the duct is filled with columns of trays arranged horizontally, air flow enters the duct through an 8" pipe and exit through another pipe of the same size, I'd like to know the best technique to achieve almost uniform...
