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 = 3200 ft/min. Assume the ideal gas model for air with cp = 0.24 Btu/lb.°R and ignore kinetic and potential energy effects. 1 (AV)1 = 5000 ft³/min T, = 80°F Air, Cp = 0.24 Btu/lb°R p=1 atm 3 V3 = 400 f/min T3 = ? -Insulation ft/min (AV)2 T = 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
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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 = 3200 ft³/min. Assume the ideal gas
model for air with c, = 0.24 Btu/lb-°R and ignore kinetic and potential energy effects.
1 (AV)1 = 5000 ft²/min Air, C, = 0.24 Btu/I6°R
T, = 80°F
p=1 atm
V3 = 400 ft/min
Tz = ?
2
(AV)2
T2 = 40°F
-Insulation
ft/min
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:Current Attempt in Progress 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 = 3200 ft³/min. Assume the ideal gas model for air with c, = 0.24 Btu/lb-°R and ignore kinetic and potential energy effects. 1 (AV)1 = 5000 ft²/min Air, C, = 0.24 Btu/I6°R T, = 80°F p=1 atm V3 = 400 ft/min Tz = ? 2 (AV)2 T2 = 40°F -Insulation ft/min 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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