Brass cube "p 8530 kg/m, c = 380 J/kg.°C, k 110 W/m.°C, a = 33.9E-6 W/m.°C", side length=9 mm, are annealed by heating them first to 881°C in a furnace and then allowing them to cool slowly to 130°C in ambient air at 28°C. If the average heat transfer coefficient is 13.7 W/m .C, If 2642 balls are to be annealed per hour, what is the total rate of heat transfer (watts) fromn the balls to the ambient air?

Brass cube "p 8530 kg/m, c = 380 J/kg.°C, k 110 W/m.°C, a = 33.9E-6 W/m.°C", side length=9 mm, are annealed by heating them first to 881°C in a furnace and then allowing them to cool slowly to 130°C in ambient air at 28°C. If the average heat transfer coefficient is 13.7 W/m .C, If 2642 balls are to be annealed per hour, what is the total rate of heat transfer (watts) fromn the balls to the ambient air?

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter7: Forced Convection Inside Tubes And Ducts

Section: Chapter Questions

Problem 7.38P

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