As shown in the figure, air with a volumetric flow rate of 16,000 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. 7₂-73-1₁-45°F D₂-D₂-26 in. V₂=V3 D₁-50 in. Duct system Air-handling unit 1- P₁ = P₂ = P = P4 = 1 atm T₁=80°F (AV)₁ 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.

As shown in the figure, air with a volumetric flow rate of 16,000 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. 7₂-73-1₁-45°F D₂-D₂-26 in. V₂=V3 D₁-50 in. Duct system Air-handling unit 1- P₁ = P₂ = P = P4 = 1 atm T₁=80°F (AV)₁ 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.

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Description: As shown in the figure, air with a volumetric flow rate of 16,000 ft3/min enters an air-handling unit at 80°F, 1 atm. The air-handlingunit delivers air at 45°F, 1 atm to a duct system with three branches consisting of two 26-in.-diameter ducts and o

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ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

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The term fluid pressure is coined as, the measurement of the force per unit area of a given surface of a closed container. It is a branch of physics that helps to study the properties of fluid under various conditions of force.

Gauge Pressure

Pressure is the physical force acting per unit area on a body; the applied force is perpendicular to the surface of the object per unit area. The air around us at sea level exerts a pressure (atmospheric pressure) of about 14.7 psi but this doesn’t seem to bother anyone as the bodily fluids are constantly pushing outwards with the same force but if one swims down into the ocean a few feet below the surface one can notice the difference, there is increased pressure on the eardrum, this is due to an increase in hydrostatic pressure.

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Question

As shown in the figure, air with a volumetric flow rate of 16,000 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.
7₂-73-7₁-45°F
D₂-D₂-26 in.
V₂ = V3
D₁-50 in.
Duct
system
Air-handling unit
1- P₁ = P₂ = P₁ = P4 = 1 atm
T₁ = 80°F
(AV),
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.

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