Engineering, 17.08.2019 19:10 chloeconlon2014
The roof of a refrigerated truck compartment is of composite construction, consisting of a layer of foamed urethane insulation (t2 50 mm, ki 0.026 w/m k) sandwiched between aluminum alloy panels (t1 5 mm, kp 180 w/m k). the length and width of the roof are l 10 m and w 3.5 m, respectively, and the temperature of the inner surface is ts, i 10c. consider conditions for which the truck is moving at a speed of v 105 km/h, the air temperature is t 32c, and the solar irradiation is gs 750 w/m2 . turbulent flow may be assumed over the entire length of the roof. (a) for equivalent values of the solar absorptivity and the emissivity of the outer surface (s 0.5), estimate the average temperature ts, o of the outer surface. what is the corresponding heat load imposed on the refrigeration system
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The roof of a refrigerated truck compartment is of composite construction, consisting of a layer of...
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