Computers and Technology, 12.03.2020 20:53 autumnplunkett09

Because of the large number of devices in today’s PC chips, finned heat sink are often used to maintain the chip at an acceptable operating temperature. Two fin designs are to be evaluated, both of which have base (unfinned) area dimensions of 53 mm x 57 mm. The fins are of square cross section and fabricated from an extruded aluminum alloy with a thermal conductivity of 175 W/m·K. Cooling air may be supplied at 25°C, and the maximum allowable chip temperature is 75°C. Other features of the design and operating conditions are tabulated. Determine which fin arrangement is superior. In your analysis calculate the heat rate, efficiency, and effectiveness of a single fin, as well as the total heat rate and overall efficiency of the array. Since real estate is important, compare the total heat rate per unit volume for the two designs.

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Because of the large number of devices in today’s PC chips, finned heat sink are often used to maint...