To maintain the optimum performance of a computer chip, its surface temperature should not exceed 70°C while it generates 35 W heat. You want to design a heat sink with some pin fins (i.e., fins with a rectangular profile and circular cross-section) that can achieve that. This means that the finned surface should be able to transfer 35 W heat with a base temperature of 70°C. How many fins with 2 cm length and 2 mm diameter will need? The orignal surface area of the base is 25 cm². For your initial calculations, you can assume an operating condition where the ambient air temperature is 30°C the convection coefficient of air is 20 W/m².K, and the fin has a thermal conductivity of 225 W/m.K. [Hint: Think how you can use the overall surface effectiveness in this problem.]

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A:

Q: Explain the Jog/shuttle mechanism.

A: The explanation about the Jog/shuttle is given as under.

Q: Define the term the radius of the pedestal?

A: The pedestal is basically a compression member used as a support for columns or other structures

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Q: QUESTION 4 A wire rope shown below is made with 1/8-inch diameter wires, and it has an outer…

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Q: What is nutation in gyroscopic motion?

A: Nutation: The nutation word is taken from a Latin word ‘nutatio’ which means swaying or nodding. It…

Q: What do you mean by a gyroscopic motion?

A: Gyroscopic motion: Angular velocity of a rotating body is a vector quantity, which can be change…

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A: Here in this question we have to complete the suggested relationship by choosing the appropriate…

Q: state 7 types of Engineer’s Hammers as follow:

A: 7 types of Engineer’s Hammers are: Ball peen hammer Sledge hammer: Cross peen hammer: Dead blow…

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A: In this problem, it is asking that which technician is correct.

Conduction and Convection

When energy travels from one object to another it is said to have undergone heat transfer. Heat transfer is nothing but the transfer of thermal energy or internal energy from one thing to another, like e.g., when a vessel with water, kept on top of a burner, heats up because of the flame underneath it.