Air at 1 atm and 27 C enters a rectangular duct that is 1 m long with a cross-sectional area that measures 4 mm x 16 mm as shown below. The mass flow rate of the air is 3 x 10* kg/s. A uniform heat flux of 600 W/m2 is imposed on all four sides of the duct surface. Evaluate air properties at the inlet temperature since the outlet temperature must be determined. 4 mm a. b. What is the outlet temperature of the air (K)? Ans. 379.8 K What is the temperature of the duct surface at the outlet (K)? (Hint:By taking advantage of the heat flux given the average temperature of the flow you can find)

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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Air at 1 atm and 27 C enters a rectangular duct that is 1 m long with a cross-sectional area that measures 4 mm x 16 mm as shown below. The mass flow rate of the air is 3 x 10* kg/s. A uniform heat flux of 600 W/m2 is imposed on all four sides of the duct surface. Evaluate air properties at the inlet temperature since the outlet temperature must be determined. 4 mm a. b. What is the outlet temperature of the air (K)? Ans. 379.8 K What is the temperature of the duct surface at the outlet (K)?

(Hint:By taking advantage of the heat flux given the average temperature of the flow you can find)

-L=1m-
Tmo
W=16mm
-H=D4 mm
Ts,o
오,"600W/ma
5,0
Transcribed Image Text:-L=1m- Tmo W=16mm -H=D4 mm Ts,o 오,"600W/ma 5,0
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