As shown in the figure, air with a volumetric flow rate of 15,000 ft3/min enters an air-handling unit at 80°F, 1 atm. The air-handling unit delivers air at 45°F, 1 atm to a duct system with three branches consisting of two 26-in-diameter ducts and one 50-in. duct. The velocity in each 26-in. duct is 13 ft/s. Assume steady state operation and ideal gas behavior for the air. Determine the mass flow rate of air entering the air-handling unit, in lb/s, the volumetric flow rate in each 26-in. duct, in ft3/min, and the velocity in the 50-in. duct, in ft/s. 2 T₂ T3 T4 = 45°F D₂ = D3 = 26 in. V₂ = V3 D4 = 50 in. Duct system Air-handling unit 3 1- P₁ P₂ P3 P4 = 1 atm T₁ = 80°F (AV)₁ = 15,000 ft³/min
As shown in the figure, air with a volumetric flow rate of 15,000 ft3/min enters an air-handling unit at 80°F, 1 atm. The air-handling unit delivers air at 45°F, 1 atm to a duct system with three branches consisting of two 26-in-diameter ducts and one 50-in. duct. The velocity in each 26-in. duct is 13 ft/s. Assume steady state operation and ideal gas behavior for the air. Determine the mass flow rate of air entering the air-handling unit, in lb/s, the volumetric flow rate in each 26-in. duct, in ft3/min, and the velocity in the 50-in. duct, in ft/s. 2 T₂ T3 T4 = 45°F D₂ = D3 = 26 in. V₂ = V3 D4 = 50 in. Duct system Air-handling unit 3 1- P₁ P₂ P3 P4 = 1 atm T₁ = 80°F (AV)₁ = 15,000 ft³/min
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Transcribed Image Text:As shown in the figure, air with a volumetric flow rate of 15,000 ft³/min enters an air-handling unit at 80°F, 1 atm. The air-handling unit
delivers air at 45°F, 1 atm to a duct system with three branches consisting of two 26-in.-diameter ducts and one 50-in. duct. The
velocity in each 26-in. duct is 13 ft/s. Assume steady state operation and ideal gas behavior for the air. Determine the mass flow rate of
air entering the air-handling unit, in lb/s, the volumetric flow rate in each 26-in. duct, in ft3/min, and the velocity in the 50-in. duct, in
ft/s.
T₂ T3 T4 = 45°F
D₂ = D3 = 26 in.
V₂ =V3
4
D₁ = 50 in.
Duct
system
'1
I
Air-handling unit
1+ P₁=P2=P3 = P4 = 1 atm
T₁ = 80°F
(AV)₁ = 15,000 ft³/min
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