Abstract
Photovoltaic energy has the potential to become one of the major energy sources used in the households in the tropical region of Africa, where the solar radiation intensity is abundant and almost constant over the year. Solar photovoltaic systems present many advantages when they are integrated in the building structure envelope and have a significant influence on the indoor air temperature of dwelling buildings due to the thermal resistance modification. In this paper, a simplified model of the photovoltaic system integrated on the roof of a residential building according to the building construction customs and materials has been designed and modelled. The heat transfer is studied in several situations: with and without a Building Integrated Photovoltaic (BIPV) system, for a building with and without false ceiling. The BIPV system, installed over an effective area of 35 m2 increases the building indoor air temperature of approximately 5°C which is corrected by the heat insulation optimization of the false ceiling made up with building local materials. The final indoor air temperature obtained are in good agreement with the ASHRAE standards and can therefore be applied in tropical regions.
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