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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![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 m'/s. Ignoring losses apart from friction, for which
a friction factor C,=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
kg/m.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fefc4cde9-56dc-4afa-9c45-879ca2c9f347%2F615b1fee-cc83-43fe-a097-fccc8bb6a34a%2Fnvrm9he_processed.png&w=3840&q=75)
Transcribed Image Text: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 m'/s. Ignoring losses apart from friction, for which
a friction factor C,=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
kg/m.
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