Given : A steel cylinder 0.35 m diameter and 0.70 m long at 20 ° C is heated in an oven maintained at 1050 ° C . The tem

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Given : A steel cylinder 0.35 m diameter and 0.70 m
long at 20 ° C is heated in an oven maintained at 1050 ° C . The
temperatures at the centre and surface of the cylinder after an
hour are to be determined . Take k = 34.9 W / mK.c = 0.7 kJ / kgk .
p = 7800 kg / m³ and h = 232.5 W / m²K . Assumptions : 1. Heat
conduction in the short cylinder has thermal symmetry about the
centreline . 2. The thermal properties of the cylinder and the heat
transfer coefficient are constant .