A horizontal poly crystalline solar panel module has to be investigated by natural cooling. For crystal silicon, the thermal coefficient approximately 0.0045/K is used. Investigate the effect of air velocity on the cooling performance of PV panels at 0-5 m/s air velocities, 25-40 ºC ambient temperatures, and 400-1000 W/ m2 solar radiation

Solution :

It is given that :

Thermal coefficient = 0.0045/K

Ambient temperature,

air velocity, v = 0-5 m/s

Solar radiation,

Model calculations :

Cell temperature ()

where wind speed / air speed

∴

      = 35.526 - 25

      = 10.526 K

Thermal coefficient = 0.0045 x 10.526

                                = 0.04737

Pv power =

                = 17.0526 W

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