A Comparison between PV and Dish Stirling Systems Towards Self-Sufficient Energy Building in Lebanon

The originality of this paper consists of analyzing and comparing the installation of and Photovoltaic Dish Stirling (DS) systems in buildings. The main goal is to maximize energy production using only the available building rooftop by introducing different solar technologies. For the case study, a typical building with four floors located in Lebanon is considered. The main goal is to propose a self-sufficient energy building that produces its own energy without the need to be connected to the grid or supplied by other external electricity sources. Three case studies are considered in which different solar technologies are installed on the rooftop: (i) PV system, (ii) Dish Stirling System, (iii) combination of (i), and (ii) to maximize the energy generation and the utilization factor of the rooftop. Results show that the PV system of 9. 3kW can only supply 12% of the total energy demand of the building during a day, while 68% is attained by using one Dish Stirling of a capacity of 25kWp. In the third case, the combination of both systems yields about 73% of the total energy demand of the building.