A computer circuit board dissipates 0.1 KW from one side over an area 300 mm by 200 mm. A small turbo fan cools the computer with flow speed of 12 m / s. It is of utmost importance that the circuit...

Extracted text: A computer circuit board dissipates 0.1 KW from one side over an area 300 mm by 200 mm. A small turbo fan cools the computer with flow speed of 12 m / s. It is of utmost importance that the circuit board is kept within acceptable temperature range. Using the average Nusselt number relationship Nuav = (0.05Rez08 – 310) Pr3. You are required to calculate: (i) The surface temperature of the board for an air temperature of 30 °c. Assume: Ambient pressure of 1 bar, R = 287 J/ kg K, Cp = 1 kJ / kg K, k = 0.03 W / m K, and u = 2 x 10% kg/m s