If the equivalent length of a transition piece of ductwork is 10 feet and the main duct in series with it is 20 feet, what is the length used to estimate the total frictional loss?
The equivalent length of the transition piece of ductwork should be added to the length of the main duct to estimate the total frictional loss. Therefore, the length used to estimate the total frictional loss would be 30 feet (10 feet + 20 feet).
To estimate the total frictional loss, the equivalent length of the transition piece of ductwork needs to be added to the length of the main duct.
Given that the equivalent length of the transition piece is 10 feet and the length of the main duct is 20 feet, the total length used to estimate the frictional loss is:
10 feet (equivalent length of transition piece) + 20 feet (length of main duct) = 30 feet