Chapter 1, Problem 1.67P

A photovoltaic panel of dimension $2\text{m}\times 4\text{m}$ isinstalled on the root of a home. The panel is irradiatedwith a solar flux of $G_s=700{\text{W/m}}^{\text{2}}$ , oriented normal Wthe top panel surface. The absorptivity of the panel to thesolar irradiation is ${\alpha }_s=0.83,$ and the efficiency of conversion of the absorbed flux to electrical power is $\eta =P/{\alpha }_s{G}_s\text{A}=0.553-0.001{\text{K}}^{\text{-1}}{T}_p$ where $T_P$ is thepanel temperature expressed in kelvins and A is the solarpanel area. Determine the electrical power generated for(a) a still summer day, in which $T_{sur}=T_{\infty }=35°C$ . $h=10{\text{W/m}}^{\text{2}}\cdot \text{K},$ and (b) a breezy winter day,for which $T_{sur}=T_{\infty }=-15°C,h=30{\text{W/m}}^{\text{2}}\cdot \text{K}$ . The panel emissivity is $\in =0.90$ .