What is Balancing? Discuss its pencedure.
5 mark question ?
Answers
Explanation:
Effect of Branch Balancing Dampers
Balancing procedures rely on the static pressure gradients remaining uniform along the duct when flow rates are either reduced or increased. When a damper is in a partially closed position, the pressure distribution along the duct, downstream of the damper, has the same general characteristics as that of an orifice plate—that is, there will be static depression followed by pressure recovery. If the first offtake on a supply branch duct is too close to the balancing damper, then the proportional balance of the downstream outlets will be affected when that damper is closed. To avoid this problem, the first offtake on a branch duct should be a minimum of two to three duct diameters downstream of the branch damper.