In this study, the combined power and refrigeration cycles driven by low-grade thermal energy are evaluated. An organic Rankine cycle (ORC) and a vapor compression refrigeration cycle (VCRC) are linked for both power generation and cooling. Three different combined cycle configurations are considered in the analyses. These are a basic ORC–VCRC, a dual-fluid basic ORC–VCRC, and a dual-fluid ORC–VCRC with an internal heat exchanger (IHE) and liquid–vapor heat exchanger (LVHE). The effects of the combined cycle configuration design on overall coefficients of performance (COPs) and the exergy efficiency of the system are examined. The highest overall COPs and exergy efficiency values at the operating conditions are obtained for the dual-fluid ORC–VCRC with IHE–LVHE as 0.72 and 19.5%, respectively. A comprehensive energy and exergy analysis is also performed for the dual-fluid ORC–VCRC with IHE–LVHE. The selection of the optimum fluid pair for ORC–VCRC is also investigated in the study. Thirty different fluid pair combinations are evaluated and compared using R123, R245fa, R600, R114, R141b, R290, R134a, and R143a refrigerants. The parametric analysis of the integrated system is performed depending on various operating conditions. Results show that the best performance among the cases considered is observed when the refrigerant R123 is used in the ORC–VCRC combined system.

在这项研究中，评估了由低级热能驱动的功率和制冷循环的组合。有机朗肯循环（ORC）和蒸气压缩制冷循环（VCRC）相互链接，用于发电和冷却。分析中考虑了三种不同的联合循环配置。这些是基本的ORC-VCRC，双流体的基本ORC-VCRC和带有内部热交换器（IHE）和液体-蒸汽热交换器（LVHE）的双流体ORC-VCRC。研究了联合循环配置设计对整体性能系数（COP）和系统的火用效率的影响。对于双流体ORC-VCRC，IHE-LVHE分别为0.72和19.5％，在操作条件下获得了最高的总COP和能值效率值。还对带有IHE-LVHE的双流体ORC-VCRC进行了综合的能量和火用分析。在研究中还研究了ORC–VCRC最佳流体对的选择。使用R123，R245fa，R600，R114，R141b，R290，R134a和R143a制冷剂评估和比较了30种不同的流体对组合。集成系统的参数分析取决于各种运行条件。结果表明，在ORC-VCRC组合系统中使用制冷剂R123时，可以观察到最佳性能。和R143a制冷剂。集成系统的参数分析取决于各种运行条件。结果表明，在ORC-VCRC组合系统中使用制冷剂R123时，可以观察到最佳性能。和R143a制冷剂。集成系统的参数分析取决于各种运行条件。结果表明，在ORC-VCRC组合系统中使用制冷剂R123时，可以观察到最佳性能。