1. School of Energy and Power Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China
2. City University of Hong Kong, Kowloon, Hong Kong 999077, China
3. Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education, Dalian University of Technology, Dalian 116024, China
4. Zhengzhou University of Light Industry, Zhengzhou 450002, China