The roof of a refrigerated truck compartment is of com- posite construction, consisting of a layer of foamed urethane insulation (t = 50 mm, k; = 0.026 W/m·K) sandwiched between aluminum alloy panels (t¡ = 5 mm, k, = 180 W/m·K). The length and width of the roof are L = 10 m and W = 3.5 m, respectively, and the temper- ature of the inner surface is T = - 10°C. Consider con- ditions for which the truck is moving at a speed of V = 105 km/h, the air temperature is T, = 32°C, and the solar irradiation is G3=750 W/m². Turbulent flow may be assumed over the entire length of the roof.

The roof of a refrigerated truck compartment is of com- posite construction, consisting of a layer of foamed urethane insulation (t = 50 mm, k; = 0.026 W/m·K) sandwiched between aluminum alloy panels (t¡ = 5 mm, k, = 180 W/m·K). The length and width of the roof are L = 10 m and W = 3.5 m, respectively, and the temper- ature of the inner surface is T = - 10°C. Consider con- ditions for which the truck is moving at a speed of V = 105 km/h, the air temperature is T, = 32°C, and the solar irradiation is G3=750 W/m². Turbulent flow may be assumed over the entire length of the roof.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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