Djamel Belatrache holds a PhD in Renewable Energies from the University of Adrar, Algeria, as well as a Master’s Degree and a Bachelor’s Degree in Mechanical Engineering from the University of Kasdi Merbah Ouargla, Algeria. He is currently an Associate Professor in the Department of Renewable Energies at the University of Kasdi Merbah Ouargla and a member of the VPRS Laboratory. Prior to his academic career, he gained professional experience in the petroleum and drilling industry, working in mechanical engineering and workover operations. This industrial background has contributed to his interdisciplinary expertise at the intersection of mechanical engineering, energy systems, and renewable energy technologies. His research focuses on renewable energy technologies, energy efficiency, solar energy systems, photovoltaic performance, solar thermal applications, heat transfer, thermal management, passive cooling, thermal insulation, natural ventilation, geothermal energy, and solar cookers. His work also addresses the performance, optimization, and integration of renewable energy systems in buildings and industrial applications, with particular emphasis on hot, arid, and semi-arid environments. His research activities include experimental investigation, numerical modelling, performance assessment, and optimization of renewable energy and energy-efficient systems.