1. School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai 200093, People's Republic of China
2. Renewable Energy Research Group (RERG), The Hong Kong Polytechnic University, Kowloon, Hong Kong, China
3. State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059, People's Republic of China