Energy balance of hybrid systems consisting of wind and photovoltaic generators and solar thermal plane collector

Theoretical and experimental analysis is given of the hybrid systems made by different combinations of the water heating soIar collector, wind generator and photovoltaic solar panel. it is shown that in the PV/Thermal Hybrid System, the photovoltaic panel with area much smaller than that of the collector should be used, to provide a good coaling of the panel thus increasing the electric power generated, without an essential loss io the heating water capacity of the heat collector. The Wind/Thermal System could be ideal for thermic appIications: at windy weather the additional energy generated by wind unit will compensate the losses in hest production by solar heat collector. The system combining all three elements produces both electric and thermal energy; a small scale system of this kind may be useful far rural houses andor schools, an example of such applications is given.