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A long cylinder 11 cm in diameter is initially at a uniform temperature of 427 C...

A long cylinder 11 cm in diameter is initially at a uniform temperature of 427 C and has a density of 7250 kg/m3, thermal conductivity of  16.7 W/m-K, and a specific heat of 540 J/kg-K. The cylinder is suddenly plunged into water with a temperature of 27 C, giving a convective heat transfer coefficient of 380 W/m2-K.

a) Determine the surface and centerline temperatures of the cylinder 12 minutes after immersion.

b) Calculate the heat transferred from the cylinder during this time interval.

Engineering   Mechanical-Engineering   
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