Dr. Adnan Sozen received his PhD in Mechanical Engineering from the Institute of Science and Technology, Department of Mechanical Engineering, Gazi University. Currently, he is an Associate Professor in the Energy Systems Engineering Technology Faculty, Gazi University, Turkey. His research interests include Renewable Energy Systems, Solar Energy Applications, GES Feasibility, Nanofluidics, nano-coolers, Heating/Cooling Systems, Heat Recovery Systems, Françis type Turbine Design, HEPP projects, Energy Management Performance Evaluation, Energy and Environmental Effectiveness, Fluid mechanics, Thermodynamics, Heat transfer, Optimization Techniques, Artificial Intelligence Techniques, Data Envelopment Analysis, Nuclear Power Plants, and Absorption Cooling/Heating Systems. He has contributed more than 100 publications in different scientific journals. Besides, he is the Associate Editor of the Journal of Environmental Science and Engineering Technology and the Editor in Chief of Journal of Polytechnic and Current Alternative Energy.