Dr. Kiyoshi Saito is a distinguished Professor at Waseda University, Faculty of Science and Engineering, School of Fundamental Science and Engineering, specializing in Mechanical Engineering. He currently serves as President of the Japan Society of Refrigerating, Air-Conditioning Engineers (2023-present) and holds significant government advisory roles including Chairman of the Energy Saving Subcommittee at Japan's Ministry of Economy, Trade and Industry. His academic career spans over two decades at Waseda University, progressing from Research Associate (1996-1998) to Associate Professor (2002) and ultimately to Professor (2008-present), while also maintaining adjunct positions at the University of Indonesia (2014-present) and University of the Philippines (2011-present). Dr. Saito earned his Dr. Engineering degree from Waseda University in 1997, following his undergraduate studies in Mechanical Engineering at the same institution in 1992. His research focuses on thermal engineering, environmental engineering, energy saving technologies, decarbonization, and non-fossil energy conversion. His work bridges fundamental thermal science with practical applications in refrigeration, air conditioning, and heat pump systems, addressing critical challenges in energy efficiency and environmental sustainability. His recent publications demonstrate a strong emphasis on advanced thermal systems, with particular focus on two-phase flow phenomena, heat exchanger optimization, and innovative monitoring techniques using artificial intelligence. Dr. Saito's research integrates traditional thermal engineering principles with cutting-edge computational methods, including machine learning approaches for performance prediction and optimization of HVAC systems. His work on low-GWP refrigerants and next-generation heat exchanger designs reflects the industry's shift toward environmentally sustainable cooling technologies. Minister of Education, Culture, Sports, Science and Technology Award (2022) Multiple Waseda Research Awards (2020-2022) Japan Society of Mechanical Engineers Award (2013) Multiple Academic Awards from Japan Society of Refrigerating, Air-Conditioning Engineers Best Paper Awards from ERDT and SAREK (2010) Dr. Saito actively contributes to national energy policy through his committee memberships with Japan's Ministry of Economy, Trade and Industry, where he chairs several critical subcommittees focused on energy saving standards and new energy development. His laboratory at Waseda University maintains strong industry connections and collaborates internationally, particularly with Southeast Asian institutions, reflecting his adjunct professorships and research interests in tropical climate applications of thermal systems. His work continues to influence both academic research and industrial practice in the field of thermal engineering and sustainable energy systems.