A doctoral thesis at the College of Engineering at the University of Basrah discussing (experimental and numerical study to improve the performance of solar hybrid photovoltaic units)

The thesis presented by the student, Angham Fadel Abdel, dealt with the conversion of solar radiation, which is not completely converted into electricity

heat. When the temperature of the cell is high, the value of the current produced by the photovoltaic cell increases.

A slight, drastically reduced voltage, causes the maximum power generated to decrease. Therefore, technique

Cooling is desirable to keep the cell at operating temperature and it must maintain an average temperature cell is minimal.

The thesis concluded in the experimental study that the CPVCACD unit cools a PV panel with a closed air cavity, showing higher productivity than a PVCACD unit for a PV panel with a closed air cavity on all days of the experiment.

As for the theoretical study, the theoretical results show that there is no change in the productivity, the temperature of the photovoltaic backboard and the temperature of

Outgoing air temperature for the suggested filament thickness and also higher productivity with less air gap thickness for two units

PVCACD and CPVCACD0

While the temperature of the photovoltaic backplate decreases, the theoretical results were compared with the previous theoretical works and showed good agreement with a maximum error of not more than 1.5%.