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EE 446/646 – Fall 2014 – Test 1 (Take Home Portion)
A. Use TMY3 data of Las Vegas, NV, to calculate the average daily solar energy – for each of
the 12 months - received by a fixed 1 m2 collector that faces south (Φc= 0) with a tilt Σ =
L = 36o. Use a reflectance of ρ = 0.25.
B. Repeat the above if the collector is mounted on a single-axis tracker (polar mount type).
C. Repeat the above if the collector is mounted on a two-axis tracker.
Plot your results on the same graph for comparison purposes.
Notations:

Direct Normal Irradiance (DNI) = IB

Diffuse Horizontal Irradiance (DHI) = IDH

Beam Horizontal Irradiance (BHI) = IBH

Global Horizontal Irradiance (GHI) = IBH + IDH