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Aluminium plate painted flat black (solar absorptivity 0.98 and emissivity 0.97) Length of absorber plate is...

Aluminium plate painted flat black (solar absorptivity 0.98 and emissivity 0.97)

Length of absorber plate is 1.2 m, width of absorber plate w = 0.8 m, Ambient air temperature = 25°C, effective sky temperature = 10°C, solar radiation rate = 600 w/m2. Calculate the temperature of the absorber plate?

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Answer #1

10°C Solution Given :- Ks = 0.98 E = 0.97 = 283.15 K Tair : 25°c Tsky Gooto/m2 a: 5.67X10 wink A = Area of platea 1.2 x 0.8 0

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