Question

Question#1 : A person wants to install a solar energy system in a given place, where at a certain time in the afternoon, the zenith angle is 30degree, the transmittance ofallgases is 70%, the water vapor absorption is 5% and the transmittance of aerosol is 90%. The solar power density a. 100 W/m2 b. 685.5 W/m c. 2050w/m2 d. None of these Question 2:A person wants to install a solar energy system in a given place, where at a certain time in the afternoon, the zenith angle is 30 degree, the transmittance of all gases is 70%, the water vapor absorption is 5%, and the transmittance of aerosol 15 90% The solar efficiency when the solar power density is 250.5 Wm2 is a. 0.1235 b. 0.1 c. 0.5066 d. None of these Question#3: An area A located next to the equator has the following parameter: The maximum solar power density occurs around noon, which is a. 1 KW/m 2 c. d. 0.5kWh㎡ None of these

Answer 1