QUESTION 1 a) A silicon chip is cooled by passing nanocoolant through microchannels etched in the back of the chip, as shown in Figure Q1. The channels are covered with a silicon cap. Consider a 11 mm and 11 mm square chip in which N = 50 rectangular microchannels, each of width W= 40 µm and height H = 160 µm have been etched. Nanocoolant enters the microchannels at a temperature T; = 290 K, and a total flow rate of 0.005 kg/s. The chip and cap are maintained at a uniform temperature of 340 K. Assuming that the flow in the channels is fully developed and all the heat generated by the circuits on the top surface of the chip is transferred to the nanocoolant, determine the rate of heat transfer through the rectangular microchannel. Assume nanocoolant as water properties at 25 °C.

QUESTION 1 a) A silicon chip is cooled by passing nanocoolant through microchannels etched in the back of the chip, as shown in Figure Q1. The channels are covered with a silicon cap. Consider a 11 mm and 11 mm square chip in which N = 50 rectangular microchannels, each of width W= 40 µm and height H = 160 µm have been etched. Nanocoolant enters the microchannels at a temperature T; = 290 K, and a total flow rate of 0.005 kg/s. The chip and cap are maintained at a uniform temperature of 340 K. Assuming that the flow in the channels is fully developed and all the heat generated by the circuits on the top surface of the chip is transferred to the nanocoolant, determine the rate of heat transfer through the rectangular microchannel. Assume nanocoolant as water properties at 25 °C.

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter8: Natural Convection

Section: Chapter Questions

Problem 8.48P

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