工质物性是影响热力循环系统性能的主要因素，选取环保性和热力学性能 俱佳

工质物性是影响热力循环系统性能的主要因素，选取环保性和热力学性能 俱佳的工质是目前热力循环的主要研究方向之一。针对不同温度热源，选取对应的工质与工质对，以发电循环系统的热力性能与经济性为目标函数，优化热力循环参数。

The physical properties of working medium are the main factors affecting the performance of thermodynamic cycle system. Selecting working medium with good environmental protection and thermodynamic performance is one of the main research directions of thermodynamic cycle at present. For different temperature heat sources, the corresponding working medium and working medium pair are selected, and the thermodynamic performance and economy of the power generation cycle system are taken as the objective function to optimize the thermodynamic cycle parameters.

Physical properties of working medium are the main factors that affect the performance of thermodynamic cycle system. Choosing working medium with good environmental protection and thermodynamic performance is one of the main research directions of thermodynamic cycle at present. According to different temperature heat sources, the corresponding working medium and working medium pair are selected, and the thermodynamic performance and economy of the power generation cycle system are taken as the objective functions to optimize the thermodynamic cycle parameters.