As shown in the figure, air with a volumetric flow rate of 14,000 ft/min enters an air-handling unit at 30°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 16 ft/s. Assume steady state operation and ideal gas behavior for the air Step 1 M₁ = 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 ft/min, and the velocity in the 50-in duct, in ft/s Your answer is correct. Hint Step 2 Determine the mass flow rate of air entering the air-handling unit, in lb/s. Ib/s. 17.1467 ₂=y=1₁851 4-1₂-26 in V₁-V, Your answer is incorrect Determine the volumetric flow rate in each 26-in. duct, in ft/min. (AV) (AV- 6002 61 D-50 ba systom ! ft/min. 1+A+1+A=A1 700F (AV), Attempts: 1 of 4 used
As shown in the figure, air with a volumetric flow rate of 14,000 ft/min enters an air-handling unit at 30°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 16 ft/s. Assume steady state operation and ideal gas behavior for the air Step 1 M₁ = 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 ft/min, and the velocity in the 50-in duct, in ft/s Your answer is correct. Hint Step 2 Determine the mass flow rate of air entering the air-handling unit, in lb/s. Ib/s. 17.1467 ₂=y=1₁851 4-1₂-26 in V₁-V, Your answer is incorrect Determine the volumetric flow rate in each 26-in. duct, in ft/min. (AV) (AV- 6002 61 D-50 ba systom ! ft/min. 1+A+1+A=A1 700F (AV), Attempts: 1 of 4 used
Refrigeration and Air Conditioning Technology (MindTap Course List)
8th Edition
ISBN:9781305578296
Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson
Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson
Chapter45: Domestic Refrigerators And Freezers
Section: Chapter Questions
Problem 8RQ: Frost accumulates on the evaporators of forced-draft refrigerators because A. they are generally...
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