A horizontal air duct system consists of a duct 0.3 m in diameter 30 m long which branches into two ducts, one being 0.15 m in diameter and 20 m long, the other being 0.2 m in diameter and 15 m long; both ducts exit to atmosphere. A fan delivers air into the 0.3 m diameter duct at the rate of 0.5 m³/s. Ignoring losses apart from friction, for which a friction factor C₁ = 0.01 may be assumed for each duct, find the pressure required at fan delivery. Neglect changes in density and assume that the density of the air, p 1 3 kg/m³.
A horizontal air duct system consists of a duct 0.3 m in diameter 30 m long which branches into two ducts, one being 0.15 m in diameter and 20 m long, the other being 0.2 m in diameter and 15 m long; both ducts exit to atmosphere. A fan delivers air into the 0.3 m diameter duct at the rate of 0.5 m³/s. Ignoring losses apart from friction, for which a friction factor C₁ = 0.01 may be assumed for each duct, find the pressure required at fan delivery. Neglect changes in density and assume that the density of the air, p 1 3 kg/m³.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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