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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 ft³/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 ft³/min Air, Cp = 0.24 Btu/lb°R T, = 80°F p=1 atm 3 V3 = 400 ft/min T3 = ? -Insulation ft/min (AV)2 Tz = 40°F Determine the temperature of the air at the exit, in °F, and the rate of entropy 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 ft³/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 ft³/min Air, Cp = 0.24 Btu/lb°R T, = 80°F p=1 atm 3 V3 = 400 ft/min T3 = ? -Insulation ft/min (AV)2 Tz = 40°F Determine the temperature of the air at the exit, in °F, and the rate of entropy production within the ducts, in Btu/min-°R.

Elements Of Electromagnetics
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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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/I6•°R and ignore kinetic and potential energy effects. (AV)1 = 5000 ft³/min Air, Cp = 0.24 Btu/lb°R 1 T = 80°F p=1 atm 3 V3 = 400 ft/min T3 = ? Insulation ft/min (AV)2 T2 = 40°F 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/I6•°R and ignore kinetic and potential energy effects. (AV)1 = 5000 ft³/min Air, Cp = 0.24 Btu/lb°R 1 T = 80°F p=1 atm 3 V3 = 400 ft/min T3 = ? Insulation ft/min (AV)2 T2 = 40°F 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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