A solar energy collector on a rooftop is 6x6 meters and, Mechanical Engineering

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A solar energy collector on a rooftop is 6x6 meters and

A solar energy collector on a rooftop is 6x6 meters and mounted in a horizontal position. The incident solar energy flux is 630 W/m^2. If the surface of the collector is 65 C and surrounding air is stagnant at 10 C. What fraction of the incident energy is lost by convection to the surrounding air?

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Mechanical Engineering: A solar energy collector on a rooftop is 6x6 meters and

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