Department of Mechanical Engineering, Wuhan Institute of Science and Technology, Wuhan 430073, China;
Department of Thermal Engineering, Tsinghua University, Beijing 100084, China;
Department of Thermal Engineering, Tsinghua University, Beijing 100084, China;
Department of Thermal Engineering, Tsinghua University, Beijing 100084, China;
pentafluoroethane (HFC-125); speed of sound; ideal-gas heat capacity at constant pressure; second Virial coefficient;