Heat Transfer for Mechanical EngineeringProblem 7/4A 70 mm x 70 mm plate is cooled by convection heat transfer to ambient airhaving To = 35°C and h = 75 W/m². °C. The temperature of the plate (Tb) is 90°C.In order to increase heat transfer, 49 conical fins are attached to the surface of thechip. The diameter (D) at the fin base 3 mm. The fin length (L) is 25 mm. Assumethat the thermal conductivity of the fin is 300 W/m. °C. Find the total heat transferfrom the plate to air.^^^^^^^TbTo, h

70 mm × 70 mm plateTemperature,T∞ = 35°Ch = 75 W/m2°CPlate Temperature, Tb = 90°CNumber of conical…

Answered: m x 70 mm plate is cooled by convection…

m x 70 mm plate is cooled by convection heat transfer to ambient air To = 35°C and h = 75 W/m² °C. The temperature of the plate (T) is 90°C

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

Heat Transfer for Mechanical Engineering
Problem 7/4
A 70 mm x 70 mm plate is cooled by convection heat transfer to ambient air
having To = 35°C and h = 75 W/m². °C. The temperature of the plate (Tb) is 90°C.
In order to increase heat transfer, 49 conical fins are attached to the surface of the
chip. The diameter (D) at the fin base 3 mm. The fin length (L) is 25 mm. Assume
that the thermal conductivity of the fin is 300 W/m. °C. Find the total heat transfer
from the plate to air.
^^^^^^^
Tb
To, h

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