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5. Given the following data:
Location: Miami, FL
Longitude: 80.28°
Latitude: 25.82°
Day: September 21 \(\sim 263\)
Time: 2:00 pm (solar time)
Horizontal Solar Radiation (on Sep 21, at 2:00 pm): 638 W/m²
Surface tilt: 40° from the horizontal
Surface orientation: Facing due south.
Calculate:
a) the day length,
b) the extraterrestrial radiation on a horizontal surface,
c) the zenith angle of the sun,
d) the incident angle of solar radiation for the given surface,
e) Rb (ie. the ratio of beam radiation on the given surface to that on a horizontal surface),
f) the diffuse radiation for the given surface,
g) the total radiation on the given surface assuming a ground reflectance of 0.3. (30 Points)