As more and more components are placed on a single integrated circuit (chip), the amount of heat that is dissipated continues to increase. However, this increase is limited by the maximum allowable chip operating temperature. Consider a 15 mm x 15 mm square chip. In order to improve the heat dissipation, a five by five aray of copper pin fins are to be joined to the outer surface of the chip. The fins have a diameter of 1.5 mm and a length of 15 mm. Cooling air can be supplied at To = 25°C, and the maximum allowable chip base temperature is To = 75°C. The convective heat transfer coefficient is h = 250 W/m²-K, and the copper has a thermal conductivity of k = 401 W/m-K. Consider two cases: Case A: Convecting Tip, and Case B: Adiabatic Tip And for each calculate the following at steady state: (a) Heat transfer rate from a single fin. (b) Efficiency of a single fin. (c) Total heat transfer rate of the array.
As more and more components are placed on a single integrated circuit (chip), the amount of heat that is dissipated continues to increase. However, this increase is limited by the maximum allowable chip operating temperature. Consider a 15 mm x 15 mm square chip. In order to improve the heat dissipation, a five by five aray of copper pin fins are to be joined to the outer surface of the chip. The fins have a diameter of 1.5 mm and a length of 15 mm. Cooling air can be supplied at To = 25°C, and the maximum allowable chip base temperature is To = 75°C. The convective heat transfer coefficient is h = 250 W/m²-K, and the copper has a thermal conductivity of k = 401 W/m-K. Consider two cases: Case A: Convecting Tip, and Case B: Adiabatic Tip And for each calculate the following at steady state: (a) Heat transfer rate from a single fin. (b) Efficiency of a single fin. (c) Total heat transfer rate of the array.
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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