Funding for this research was provided by:
National Natural Science Foundation of China (51805470)
the Fundamental Research Funds for the Central Universities (2018QNA4013)
the Open Foundation of Key Laboratory of Efficient Utilization of Low and Medium Grade Energy (Tianjin University), Ministry of Education of China (201704-403)
Article History
Received: 21 July 2018
Revised: 11 October 2018
First Online: 23 November 2018