• A piece of chromium steel of length 7.4cm (density= 8780kg/m³, k=50 W/m K) and specific heat capacity (C,=440 J/kg K) with mass 1.27 kg is rolled into a solid cylinder and heated to a temperature of 600 °C and quenched in oil at 36 °C. Show that the lumped capacitance system analysis is applicable and find the temperature of the cylinder after 4min. What is the total heat transfer during this period? You may take the convective heat transfer coefficient between the oil and cylinder at 280 W/m2K.

• A piece of chromium steel of length 7.4cm (density= 8780kg/m³, k=50 W/m K) and specific heat capacity (C,=440 J/kg K) with mass 1.27 kg is rolled into a solid cylinder and heated to a temperature of 600 °C and quenched in oil at 36 °C. Show that the lumped capacitance system analysis is applicable and find the temperature of the cylinder after 4min. What is the total heat transfer during this period? You may take the convective heat transfer coefficient between the oil and cylinder at 280 W/m2K.

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 3.12P

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