This excel spreadsheet allows the user to determine how the amount and type of fan/inlet light traps affect the air moving capacity of the exhaust fans and therefore air speed in a light-controlled, tunnel ventilated pullet house. This version lists more currently used light traps
Number of fans
Air moving capacity (cfm) of the fan you want to examine @ static pressures from 0.00" to 0.25"
Type and amount of tunnel inlet light trap
Type and amount of tunnel fan light trap
Type and amount of evaporative cooing pad
Total static pressure tunnel fans will be working against
Estimated static pressure along length of the house