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Question 12 [5 Mark] A 10-cm-wide and 15-cm-high vertical hot surface in 25 °C air is to be cooled by a heat sink with equally spaced fins of rectangular profile. The fins are 1 mm thick and 15 cm long in the vertical direction and have a height of 25 mm from the base. Draw the neat figure of the setup and determine the optimum fin spacing and the rate of heat transfer by convection from the heat sink if the base temperature is 90 °C.

Question 12 [5 Mark] A 10-cm-wide and 15-cm-high vertical hot surface in 25 °C air is to be cooled by a heat sink with equally spaced fins of rectangular profile. The fins are 1 mm thick and 15 cm long in the vertical direction and have a height of 25 mm from the base. Draw the neat figure of the setup and determine the optimum fin spacing and the rate of heat transfer by convection from the heat sink if the base temperature is 90 °C.

Elements Of Electromagnetics
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 12 [5 Mark] A 10-cm-wide and 15-cm-high vertical hot surface in 25 °C air is to be cooled by a heat sink with equally spaced fins of rectangular profile. The fins are 1 mm thick and 15 cm long in the vertical direction and have a height of 25 mm from the base. Draw the neat figure of the setup and determine the optimum fin spacing and the rate of heat transfer by convection from the heat sink if the base temperature is 90 °C.
Transcribed Image Text:Question 12 [5 Mark] A 10-cm-wide and 15-cm-high vertical hot surface in 25 °C air is to be cooled by a heat sink with equally spaced fins of rectangular profile. The fins are 1 mm thick and 15 cm long in the vertical direction and have a height of 25 mm from the base. Draw the neat figure of the setup and determine the optimum fin spacing and the rate of heat transfer by convection from the heat sink if the base temperature is 90 °C.
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