The moonroof of a car, while traveling at a speed of 60 km/h, experiences a total...

 

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The moonroof of a car, while traveling at a speed of 60 km/h, experiences a total rate of heat transfer equal to 18.75 W. This moonroof can be represented as a 1 m wide, 1 m long flat glass with a thermal conductivity of k = 0.4 W/m.K. The car's interior temperature is maintained at 27 °C, while the outside air temperature remains at 37 °C. It is assumed that the air flowing over the roof's outer surface is fully turbulent due to the intense vibrations during travel. Furthermore, the convective heat transfer coefficient on the interior side is 25 W/m2K. Air properties at 30 C: p = 1.164 kg/m3, u = 1872 x 10-5 Pa.s, a = 2.208 x10-5 m2/s, Pr = 0.73, k= 0.026 W/m.K. (use these properties in your calculation) calculate The thickness of the moonroof (flat glass) (15 points) The average temperatures on the outer and interior surface of the moonroof (10 points) The moonroof of a car, while traveling at a speed of 60 km/h, experiences a total rate of heat transfer equal to 18.75 W. This moonroof can be represented as a 1 m wide, 1 m long flat glass with a thermal conductivity of k = 0.4 W/m.K. The car's interior temperature is maintained at 27 °C, while the outside air temperature remains at 37 °C. It is assumed that the air flowing over the roof's outer surface is fully turbulent due to the intense vibrations during travel. Furthermore, the convective heat transfer coefficient on the interior side is 25 W/m2K. Air properties at 30 C: p = 1.164 kg/m3, u = 1872 x 10-5 Pa.s, a = 2.208 x10-5 m2/s, Pr = 0.73, k= 0.026 W/m.K. (use these properties in your calculation) calculate The thickness of the moonroof (flat glass) (15 points) The average temperatures on the outer and interior surface of the moonroof (10 points)