本文针对低温烟气有机朗肯循环系统，以R236ea、R245fa、R245ca和R601a等10种纯质以及上述纯质的4种二元混合工质M1—M4为研究对象，在特定的循环工况下采用炯分析方法来评价系统的热力学性能；考查了循环系统各个部件的媚损失分布。模拟结果表明，R236ea等五种纯工质和混合工质M2、M4综合性能比较好；混合工质的炯效率比其纯质组分要高；系统中蒸发器内拥损失最大，泵内的最小，且可以忽略不计；混合工质的使用降低了蒸发器内的堋损失。
This paper presents the analysis on the performance of organic rankine cycle （ORC） with a certain operating condition based on exergy analysis method by testing 10 pure component working fluids （R236ea, R245fa, R245ca, R601a, et al.） and 4 mixtures （M1, M2, Ma, M4）. The exergy loss distribution of each component was also studied. The results show： there is more excellent performance for R236ea, R245fa, R601a, R601, neo-pentane, M2, M4; exergy efficiencies of mixtures are higher than these of pure component working fluid; exergy loss in evaporator is the highest, and that in pump is the lowest, which can be neglected; because of the use of mixed working fluid, exergy loss in evaporator is reduced.
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