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The energy yield of a PV module decreases with rising cell temperatures. Since the cell temperature of a PV module is normally higher than the ambient temperature the loss due to the effect of temperature can be considerable. This work analyses possible methods to decrease the solar cell temperature. Two methods were studied theoretically and the more practical solution was implemented and tested in field conditions. The first idea was to cool the PV module with water flowing through a tube on the rear surface. The second idea was the application of aluminium fins on the PV modules...

I spent the first twenty six years of my life in Rome. I used to go for ice cream to a popular place near the Pantheon and I remem ber the excitement I felt, beyond the chocolate and whipped cream, when I entered this ancient Roman temple. After staring at the "shower" of light coming from the circular opening at the center of the dome, as strong as a spotlight, I remember being attracted almost hypnotically to the place below the opening. I remember counting the coffers carving the concave dome, com posed in five rows of circular arrays, and could feel the power and protection created by the...