1. Key Laboratory of Efficient Utilization of Low and Medium Grade Energy, Tianjin University, Ministry of Education of China, Tianjin, China
2. Graduate School of Engineering, University of Fukui, Fukui, Japan
3. Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Fukuoka, Japan
4. Research and Development Department, Beijing Qingjian Energy Technology Co. LTD, Beijing, China