Hoseyn Sayyaadi received his BSc in Mechanical Engineering (Thermofluids) in 1994 from Sharif University of Technology (Tehran-Iran), MSc in Mechanical Engineering-Energy Conversion in 1997from Iran University of Technology (Tehran-Iran) and PhD in Mechanical Engineering in 2003 from the University of Tokyo (Tokyo-Japan). He has been Faculty of Mechanical Engineering Department – Energy Division in K.N. Toosi University of Technology since 2005. His current position is Associate Professor of Mechanical Engineering and the head of the Energy Optimization Research Laboratory. His main research field is modelling and optimization of energy systems.