Grade Q1) On June 15 from 3:00 to 4:00 pm in Jerusalem, Palestine (at 31.7N latitude), a flat-plate collector (2\times5m) faces south, tilted 48 from horizontal received a solar radiation (G_{t}) of 1200 W/m^{2} on its surface at an ambient temperature of 17C. Given the following information, estimate: Overall heat loss coefficient =7.2~W/m^{2}\cdot^{\circ}C Water inlet temperature =32^{\circ}C Mass flow rate through the collector = 0.23 kg/s Tube inside convection heat transfer coefficient =255~W/m^{2}-K Single glazing cover with n=1.526 and kL=0.037 Absorber plate is selective with cn=0.94, thickness = 0.45 mm and \tau r=0.90 Heat removal factor = 0.85 a) The inclination angle (8) b) The incident angle (0)