Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN: 9780190698614
Author: Sadiku, Matthew N. O.
Publisher: Oxford University Press
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Air at 25 ° C blows over the hot steel plate whose surface temperature is maintained at 250 ° C. The plates are 70 cm x 40 cm in dimensions and 2.5 cm thick. The convection heat transfer coefficient on the upper surface is 20 W / (m² ° C). The thermal conductivity of steel is 45 W / (m ° C). Calculate the hourly heat loss from the plate surface.

a. heat loss per hour = Answer
kJ.

b. If the reverse side surface temperature is maintained, determine the hourly heat loss occurring = Answer
kJ.

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