A tube bank uses an aligned arrangement of 12-mm diameter tubes with ST = SL = 20 mm. There are 8 rows of tubes with 20 tubes in each row. The tubes are maintained at a surface temperature of 400K, while the flue gas at 30OK and a velocity of 5 m/s are in cross flow over the tubes. The properties of the flue gas approximated as those of air at 300K are kinematic viscosity v=15.89x10-6 m²/s, k=26.3×10-3 W/m-K, Pr=0.707, p=1.1614 kg/m³, cp=1007 J/kg-K. At 400K, Pr;=0.690. Determine 1) Average convention heat transfer coefficient; 2) Rate of heat transfer per unit length of the tubes in the bank.

A tube bank uses an aligned arrangement of 12-mm diameter tubes with ST = SL = 20 mm. There are 8 rows of tubes with 20 tubes in each row. The tubes are maintained at a surface temperature of 400K, while the flue gas at 30OK and a velocity of 5 m/s are in cross flow over the tubes. The properties of the flue gas approximated as those of air at 300K are kinematic viscosity v=15.89x10-6 m²/s, k=26.3×10-3 W/m-K, Pr=0.707, p=1.1614 kg/m³, cp=1007 J/kg-K. At 400K, Pr;=0.690. Determine 1) Average convention heat transfer coefficient; 2) Rate of heat transfer per unit length of the tubes in the bank.

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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