Question: A microprocessor chip (10 mm 10 mm square) is to be cooled by an impinging circular air jet that is directed on the chip

A microprocessor chip (10 mm × 10 mm square) is to be cooled by an impinging circular air jet that is directed on the chip surface by a 5-mm diameter nozzle, placed at a distance of 10 mm. The electrical activity in the microcircuits of the chip render a uniform surface heat flux condition. For safe operation of the microprocessor, the chip-surface temperature should not exceed 90°C. If air at 20°C flows through the nozzle with a velocity of 10 m/s, and the maximum heat dissipated by the chip is 1.25 W, is this jet-impingement cooling system able to maintain the entire chip surface at a safe operating temperature?

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