Chongqing University, affiliation not provided to SSRN, University of Waterloo, Chongqing University, Chongqing University, affiliation not provided to SSRN, University of Waterloo, Chongqing University, Chongqing University, Chongqing University - MOE Key Laboratory of Low-grade Energy Utilization Technologies and Systems, Chongqing University - MOE Key Laboratory of Low-grade Energy Utilization Technologies and Systems and University of Waterloo