ENERGY PERFORMANCE STUDIES OF A PVT-AIR HYBRID SYSTEM WITH CAES : INFLUENCE OF INPUT PARAMETERS ON THE COMPRESSION SYSTEM

Energetic

In order to find the most efficient electrical-thermal energy cogeneration storage system, air compression and expansion, with their heat and cold recovery respectively, are currently very important research topics. The use of compressed air storage seems to be a promising solution in this field of energy storage, as it is characterized by a remarkable stored energy density (kWh.m- ³) and high reliability (days of operation) with no environmental impact. The aim of this work is to predict the performance of a thermal photovoltaic panel coupled to a compressed-air energy storage system (PVT-CAES) which produces electrical and thermal energy simultaneously from solar energy. The power produced over time by PVT photovoltaic panels is characterized by its fluctuation due to the fact that the sun is an unpredictable and highly fluctuating source. The study therefore focuses on the construction of a numerical model capable of simulating a CAES system powered by a PVT panel and a system for cooling a photovoltaic panel by using fresh air at the outlet (MAC: Compressed Air Engine) of the CAES. An analysis of the influence of key system parameters (PVT-CAES) such as: global solar irradiation, compression system volume flow rate, number of compressor stages and maximum permissible pressure was also carried out.

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