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A horizontal opaque flat plate, whose absorptivity at short wave lengths is 0.83, is well insulated on the edges and the
Posted: Tue May 24, 2022 10:38 am
by answerhappygod
- A Horizontal Opaque Flat Plate Whose Absorptivity At Short Wave Lengths Is 0 83 Is Well Insulated On The Edges And The 1 (32 KiB) Viewed 23 times
A horizontal opaque flat plate, whose absorptivity at short wave lengths is 0.83, is well insulated on the edges and the lower surface. The top surface experiences uniform solar irradiation at a rate of 920 W/m². The surface maintains a uniform temperature of 350 K while losing heat by convection to the surrounding air at 325 K with the convection heat transfer coefficient of 5.9 W/m²°C. Determine the emissivity of the plate at long wave lengths. The tolerance of your answer is 1%.