Durmü KAYA graduated as a Mechanical Engineer from Y¿ld¿z Technical University. He received his M.S. at Kocaeli University and Ph.D. in Mechanical Engineering from Sakarya University. His research areas are thermal energy, energy efficiency, energy management, renewable energies, biogas, energy recovery from waste, clean energy technologies, energy and environment. He has contributed to many national and international projects as a Project Manager and a Researcher. He has a large number of published scientific papers in various respected journals. He is also the author of many academic books. Currently, he is a Professor at Kocaeli University Department of Energy Systems Engineering, and he is managing two national biogas and energy efficiency projects.

Fatma ÇANKA KILIÇ is a Professor Dr. at Kocaeli University, Technology Faculty, Department of Energy Systems Engineering, and She is a Chairman of Renewable Energy Department at Kocaeli University in Turkey. She graduated from Y¿ld¿z Technical University, Department of Mechanical Engineering. She received her M.S. at Kocaeli University. She has graduated with a Ph.D. in Mechanical Engineering from Sakarya University, and She completed her Ph.D. thesis at Clemson University, Department of Mechanical Engineering, Graduate School of Applied Sciences, in Energy Sciences in SC, USA. Her research areas are thermal energy, renewable energies, clean energy technologies, HVAC systems, energy management, energy efficiency, energy recovery from waste, energy and environment. Prof. Dr. Fatma ÇANKA KILIÇ has published a large number of academic papers in various prestigious national and international journals, scientific conference, congress and symposiums. She has also contributed to some important technical projects as a Researcher.

H. Hüseyin ÖZTÜRK is a Professor Dr. in the Department of Agricultural Machinery and Technologies at Çukurova University. His research interests include the utilization of renewable energy sources in agriculture, climate control in greenhouses, storage of solar thermal energy and energy management in agriculture. He is involved in many projects supported by international and national organizations. Prof. ÖZTÜRK has published large number of papers in various respected journals, international and national scientific congress, and symposiums. He is also the author of many books on the subjects he studied. Prof. ÖZTÜRK is married and has two daughters.