2. (20) Consider a solar panel of 2m x 5m planar dimensions. One side of this panel is exposed to solar irradiation of G=2,000 W/m at that location with an absorptivity of a = 0.90; the back panel is exposed to deep darkness of the space. The efficiency of the panel to produce electric power is Remember that there is no air or any 20% which is defined as panel Ppower "/ (a. G. Area) type of convection where the panel is , hence the panel heat transfer is by radiation only! Note that while the panel facing the Sun absorbs solar energy, both front and the back surfaces have an emissivity of = 0.8 and radiate energy to deep space at 0K. a. Write the equation for the energy equilibrium of the panel in terms of Qabsorbed; Qlost by panel ; and the electrical power Ppanel drawn from the solar panel. b. What is the electrical power output of this panel? C. What is the steady-state temperature of the solar panel? . d. What is the steady-state temperature of the panel IF WE STOP drawing electrical power from it? Note that this problem is similar to a question in an earlier homework assignment, yet simpler because of absence of any convection . You can solve for the panel temperature easily.