A photovoltaic panel of dimension 2 m X 4 m is installed on the roof of a home. The panel is irradiated with a solar flux of G_S = 700 W/m², oriented normal to the top panel surface. The absorptivity of the panel to the solar irradiation is α_s = 0.83, and the efficiency of conversion of the absorbed flux to electrical power is η = P/α_SG_SA = 0.553 – 0.001 K^–1 T_p, where T_p is the panel temperature expressed in kelvins and A is the solar panel area. Determine the electrical power generated for

(a) A still summer day, in which T_sur  = T_∞ = 35°C, h 10 W/m² · K, and 

(b) A breezy winter day, for which T_sur =  T_∞
= 15°C, h = 30 W/m² · K. The panel emissivity is ϵ = 0.90.

Transcribed Image Text:

Gs Air T... h B 188 Photovoltaic panel, I, T sur