Hybrid nanofluids multi performance optimizations for the cooling system coupling with hybrid photovoltaic thermal collectorsKhadija Chakar, Chouaib Ennawaoui, Mahmoud El Mouden and Abdelowahed HajjajiEur. Phys. J. Appl. Phys., 97 (2022) 70DOI: https://doi.org/10.1051/epjap/2022220117