1. Department of Energy Engineering, Zhejiang University, Hangzhou, P.R. China
2. Department of Nuclear and Heat Power Engineering, Peter the Great Saint Petersburg Polytechnic University, Saint Petersburg, Russia
3. State Key Laboratory of Fluid Power and Mechatronic Systems, College of Mechanical Engineering, Zhejiang University, Hangzhou, P.R. China
4. Department of Mechanical and Industrial Engineering (M/C 251), University of Illinois at Chicago, USA