In order to maximize the energy efficiency of buildings, it is important to utilize the energy of solar radiation as much as possible using modern technologies that can be installed into envelope of buildings. In this thesis, we present the results of researches of semi-transparent BIPV glazed facade structure. The developed facade element enables production of electric energy, an energy efficient natural ventilation and the design of the element also enables a reduction of heat loss of the opaque envelope wall. The first part of the thesis presents the theoretical principles of solar cells and the transfer of heat in buildings. It is followed by the presentation of the performed in-situ experiments and the analysis of results. We presented the used energy efficiency indicators of the developed BIPV facade structure and showed the results of the analysis we did. The results of measurements and analysis showed that the daily efficiency of BIPV structure is between 8% and 9.5% when the solar radiation is above 1500 Wh/day. Between 30% and 70% of the daily solar radiation is transformed to heat which pre-heats air in the ventilation gap.
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