Ex1. A piece of chromium steel of length 7.4cm (density=8780kg/m; k = 50w/mK and specific heat cp = 440j/kgK) with mass 1.27kg 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 280w/m2k.

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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Ex1. A piece of chromium steel of length 7.4cm (density=8780kg/m³ ; k = 50w/mK and
specific heat cp = 440j/kgK) with mass 1.27kg 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
280w/m2k.
Transcribed Image Text:Ex1. A piece of chromium steel of length 7.4cm (density=8780kg/m³ ; k = 50w/mK and specific heat cp = 440j/kgK) with mass 1.27kg 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 280w/m2k.
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