Answered: There is a flow of air that circulates…

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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Question

There is a flow of air that circulates over a flat plate that is used to store a food product at a temperature of 95 ° C throughout its surface. The air flows at a speed of 2.5 m/s and has a temperature of 25.0°C. The plate measures 600.0 mm · 300.00 mm.

As a task assigned by your plant operations manager, you are asked to answer the following questions:

i. Determine the heat loss from the plate if the air flows parallel to the 600.00-mm side.
ii. How would this heat loss be affected if the airflow is made parallel to the 300.0-mm side?

For this type of configuration, the coefficient of heat transfer by forced convection, h, can be obtained from the relation

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The previous correlation is valid for the laminar regime, that is: Re < 500000

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