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Unformatted text preview: assume that there is no conduction from the grass to the dew or from the ground to the grass. Take the emissivity as unity for the water. (ANSWERS: 280.8 K) 3. It is not uncommon for the night sky temperature in desert regions to drop to 40ºC. If the ambient air temperature is 20ºC and the convection coefficient for still air condition is approximately 5 W/m 2 K, can a shallow pan of water freeze? The emissivity of water at 300 K is 0.96. (ANSWER: 268.5K) 4. Show that the view factor of the inclined parallel plates of equal width, w , and a common edge with angle α is ) 2 / sin( 1 12 − = F 1 w 2 w 5. Find F 12 and F 21 for the sphere lying on infinite plane. (ANSWER: 0.5 and 0) A 1 A 2...
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This note was uploaded on 07/30/2011 for the course ME 324 taught by Professor Nezihtopaloglu during the Spring '11 term at Yeditepe Üniversitesi.
 Spring '11
 nezihtopaloglu
 Heat Transfer

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