Photovoltaic installation for a roofed car park in Egypt as an example of effective use of solar energy

Abstract

Abstract. Photovoltaic installations are becoming an increasingly important player in the global renewable energy production market. The biggest disadvantage of photovoltaic installations is their high price, and relatively low efficiency. Photovoltaic cells achieve a theoretical efficiency of 30%, but in real conditions this efficiency is much lower at roughly 15%. Photovoltaic installations are particularly recommended in locations where the amount of solar radiation is high and where photovoltaic installations will be able to work at full capacity for most of the year. The paper presents an analysis of the work of a photovoltaic installation built for a roofed car park located in eastern Cairo, the capital of Egypt. The installation is built for a car park located at the Schlumberger company. The installation is built of 1344 Hanwha Q.Power L-G325 silicon polycrystalline cell modules, each module has a power of 325 Wp, and the total area of the installation is 2,611 m 2 . Effective irradiance on collectors is 1922 kWh/m 2 . The array's nominal produced energy was 840 MWh/year, the amount of electricity injected into the grid was 587 MWh/year, which means that the calculated performance ratio was 0.62.

Performance analysis of a 48kWp grid-connected photovoltaic plant in the Sahelian climate conditions of Nouakchott, Mauritania

“…In the hot desert climate of Cairo, it can be observed that the grid-connected PV system using a-Si [26] performs better than p-Si [27] based PV system with respectively performance ratio 77.75 % and 62%. According that the PR takes into account the overall losses of a PV system, this lower performance in the case of [27] can be attributed to the high losses in this system.…”

“…In the hot desert climate of Cairo, it can be observed that the grid-connected PV system using a-Si [26] performs better than p-Si [27] based PV system with respectively performance ratio 77.75 % and 62%. According that the PR takes into account the overall losses of a PV system, this lower performance in the case of [27] can be attributed to the high losses in this system. The reported performance parameters of a 15 MWp PV power plant [4]based on amorphous silicon (a-Si) and micro-amorphous silicon (μa-Si) technologies show a final yield of 4.27 kWh/kWp and a performance ratio of 67.96 %,somewhat lower than the 4.56 kWh/kWp final yield and 77.66% performance ratio of the present study.…”

“…However, Africa and more specially its northern part has witnessed a widespread deployment of grid-connected solar photovoltaic systems in the last decade. Several studies[23][24][25][26][27][28][29][30][31][32][33][34][35][36]have focused on the performance analysis of PV solar plants in Northern Africa. Moreover, Bennouna et al[73] reported performances of three silicon-based PV module technologies in 20 sites of Morocco.…”

Transformation of Solar Energy to Electricity with Photovoltaic Systems, Reduction of Electrical Consumption and Installation of LED Lamps in the ITSAO

“…The photovoltaic parks have taken great importance as renewable energy generation systems in individual buildings integrating from the design of the building involving the architecture and installers of photovoltaic systems; thus, the photovoltaic industry is a technology that is already included in the architectural design process [8], [9] & [10].…”