A solar panel mounted on a spacecraft has an area of1m2and
Chapter 12, Problem 12.141(choose chapter or problem)
A solar panel mounted on a spacecraft has an area of1m2and a solar-to-electrical power conversion effi-ciency of 12%. The side of the panel with the photo-voltaic array has an emissivity of 0.8 and a solarabsorptivity of 0.8. The back side of the panel has anemissivity of 0.7. The array is oriented normal tosolar irradiation of 1500 W/m2.(a) Determine the steady-state temperature of thepanel and the electrical power (W) produced forthe prescribed conditions.(b) If the panel were a thin plate without the solar cells,but with the same radiative properties, determinethe temperature of the plate for the prescribed con-ditions. Compare this result with that from part (a).Are they the same or different? Explain why.(c) Determine the temperature of the solar panel1500 s after the spacecraft is eclipsed by a planet.The thermal capacity of the panel per unit area is.9000 J/m2?K.
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