Dr. R. Reji Kumar is currently a Professor in the Department of Mechanical Engineering at SR University, Warangal, Telangana, India. He holds a Ph.D. in Advanced Materials from Universiti Malaysia Pahang Al-Sultan Abdullah (UMPSA), Malaysia. He received his Master’s degree in Thermal Engineering (2011) and Bachelor’s degree in Mechanical Engineering (2009) from Anna University, India.

Dr. Reji Kumar has over a decade of teaching and research experience at national and international institutions. He previously served as a Postdoctoral Research Fellow at the Institute of Sustainable Energy, Universiti Tenaga Nasional (UNITEN), Malaysia, and at the Higher Institution Centre of Excellence (HICoE), UM Power Energy Dedicated Advanced Centre (UMPEDAC), Universiti Malaya, Kuala Lumpur, Malaysia. His research interests include thermal energy storage, phase change materials (PCMs), nano-enhanced PCMs, photovoltaic-thermal (PVT) systems, solar desalination, thermoelectric generators, battery thermal management, and advanced heat transfer technologies. He has authored more than 105 research publications, with over 4000 citations and an h-index of 38. He has also been recognized among the Top 2% of scientists worldwide published by Stanford-Elsevier. His research contributions include participation in three projects funded by national and international agencies as Principal Investigator/Co-Principal Investigator. He has authored a book, reviewed manuscripts for numerous international journals, and served on editorial boards of international journals. In recognition of his expertise, he has been appointed as an Adjunct Professor at several international institutions. His achievements include national and international exhibition awards, best paper award, the Best Teacher Award, the Best Thesis Award, and the Graduated On Time Award. He is committed to advancing sustainable energy technologies through innovative research, international collaboration, and academic mentorship.