A steel disc (k = 56.7 W/m.K, p = 7854 kg/m³, c = 487 J/kg. K) 30 cm in diameter and 10 cm thick, initially at uniform temperature of 265 °C is immersed in liquid at -15 °C. The convective coefficients on ends and on cylindrical side are 340 and 1420 W/m².K, respectively. What is the temperature at (a) center of disc, and (b) surface at centre of one end (c) Calculate heat transfer after 5 min have elapsed.

A steel disc (k = 56.7 W/m.K, p = 7854 kg/m³, c = 487 J/kg. K) 30 cm in diameter and 10 cm thick, initially at uniform temperature of 265 °C is immersed in liquid at -15 °C. The convective coefficients on ends and on cylindrical side are 340 and 1420 W/m².K, respectively. What is the temperature at (a) center of disc, and (b) surface at centre of one end (c) Calculate heat transfer after 5 min have elapsed.

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.

Chapter3: Transient Heat Conduction

Section: Chapter Questions

Problem 3.33P

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