Evaluate the total heat collected (qr) and the final storage temper- ature after 6 h operation for the following given parameters:
(a) F΄ (ατ) = 0.75 and FU₁ = 5.0W/m² °C;
(b) mfCf = 45 W/m² °C and m₂Cs = 0.32 MJ/m² °C;
(c) average solar intensity I(t) = 750 W/m²; and
(d) average ambient temperature = 10 °C and Tsi = 15 °C.