1. School
of Energy, Soochow University, Suzhou, Jiangsu 215006, People’s Republic of China
2. General Electrical Company, Houston, Texas 77041, United States
3. School
of Resource and Geosciences, China University of Mining and Technology, Xuzhou, Jiangsu 211116, People’s Republic of China
4. Department of Mechanical Engineering, Texas A&M University, College Station, Texas 77843, United States