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The figure shows data for a portion of the ducting in a ventilation system operating at steady state. The ducts are well insulated and the pressure is very nearly 1 atm throughout. The volumetric flow rate entering at state 2 is AV2 = 2000 ft/min. Assume the ideal gas model for air with c, =0.24 Btu/lb-°R and ignore kinetic and potential energy effects. (AV): = 5000 ft³/min Air, co = 0.24 Btu/lb'R T, = 80°F p=1atm 3 V3= 400 ftimin T=? -Insulation n'imin (AV)2 T2 = 40°F Determine the temperature of the air at the exit in °F and the rate of entrony production within the ducts in Btu/min-°R

The figure shows data for a portion of the ducting in a ventilation system operating at steady state. The ducts are well insulated and the pressure is very nearly 1 atm throughout. The volumetric flow rate entering at state 2 is AV2 = 2000 ft/min. Assume the ideal gas model for air with c, =0.24 Btu/lb-°R and ignore kinetic and potential energy effects. (AV): = 5000 ft³/min Air, co = 0.24 Btu/lb'R T, = 80°F p=1atm 3 V3= 400 ftimin T=? -Insulation n'imin (AV)2 T2 = 40°F Determine the temperature of the air at the exit in °F and the rate of entrony production within the ducts in Btu/min-°R

Structural Analysis
Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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The figure shows data for a portion of the ducting in a ventilation system operating at steady state. The ducts are well insulated and the pressure is very nearly 1 atm throughout. The volumetric flow rate entering at state 2 is AV2 = 2000 ft/min. Assume the ideal gas model for air with c, = 0.24 Btu/lb-°R and ignore kinetic and potential energy effects. (AV)1 = 5000 ft/min Air, Cg = 0.24 Btu/lb*R T = 80°F p=1 atm 3 V3= 400 f/min T3 = ? 2 (AV)2 Tz = 40°F LInsulation t'/min %3D Determine the temperature of the air at the exit, in °F, and the rate of entropy production within the ducts, in Btu/min-°R.
Transcribed Image Text:The figure shows data for a portion of the ducting in a ventilation system operating at steady state. The ducts are well insulated and the pressure is very nearly 1 atm throughout. The volumetric flow rate entering at state 2 is AV2 = 2000 ft/min. Assume the ideal gas model for air with c, = 0.24 Btu/lb-°R and ignore kinetic and potential energy effects. (AV)1 = 5000 ft/min Air, Cg = 0.24 Btu/lb*R T = 80°F p=1 atm 3 V3= 400 f/min T3 = ? 2 (AV)2 Tz = 40°F LInsulation t'/min %3D Determine the temperature of the air at the exit, in °F, and the rate of entropy production within the ducts, in Btu/min-°R.
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