A slab of aluminium 10 cm thick is originally at a temperature of 500°C. It is suddenly immersed in a liquid at 100°C resulting it a heat transfer coefficient of 1200. W/m2K. Determine the temperature at the center line and the surface 1 min after the immersion. Also the total thermal energy removal per unit area of slab during this period. The properties of aluminium for the given condition are, a = 8.4 x 10-5 m2/s, k =215 W/mK, p = 2700 kg/m3, C= 0.9 kJ/kgK.

A slab of aluminium 10 cm thick is originally at a temperature of 500°C. It is suddenly immersed in a liquid at 100°C resulting it a heat transfer coefficient of 1200. W/m2K. Determine the temperature at the center line and the surface 1 min after the immersion. Also the total thermal energy removal per unit area of slab during this period. The properties of aluminium for the given condition are, a = 8.4 x 10-5 m2/s, k =215 W/mK, p = 2700 kg/m3, C= 0.9 kJ/kgK.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Concept explainers

Conduction and Convection

When energy travels from one object to another it is said to have undergone heat transfer. Heat transfer is nothing but the transfer of thermal energy or internal energy from one thing to another, like e.g., when a vessel with water, kept on top of a burner, heats up because of the flame underneath it.

Question

A slab of aluminium 10 cm thick is originally at
a temperature of 500°C. It is suddenly immersed
in a liquid at 100°C resulting it a heåt transfer
coefficient of 1200. W/m2K. Determine the
temperature at the center line and the surface 1
min after the immersion. Also the total thermal
energy removal per unit area of slab during
this period. The properties of aluminium for the
given condition are,
a = 8.4 x 10-5 m?/s, k =215 W/mK, p = 2700 kg/m3,
C= 0.9.kJ/kgK.

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