This paper reports on a comparative study of the thermodynamic performance of the organic Rankine cycle (ORC) and Kalina cycle 11 (KCS11) using solar energy for application in residential or commercial sectors. The objective was to determine the amount of power that can be produced by solar energy systems using low-quality energy sources (hot water at temperatures above 60 \(^o\)C), from the viewpoints of the first and second laws of thermodynamics. Moreover, the performance impact of coupling these cycles to hybrid solar photovoltaic-thermal collector systems (PV/T) to increase the total power generation for the same surface area was analyzed. In particular, the PV/T systems were employed to increase the production of solar energy systems, as the efficiency of photovoltaic cells reduces under hot climates, such as the climate in Brazil. The results indicated that the exergy efficiency of the KCS11 is higher than that for the ORC. Nevertheless, both cycles as the bottoming cycles to PV/T collector configurations increased the total theoretical electric power generation, for the design study, in approximately 0.4 kW per unit of area.

本文报道了使用太阳能将有机朗肯循环（ORC）和卡利纳循环11（KCS11）的热力学性能进行比较研究，并将其应用于住宅或商业领域。目的是确定使用劣质能源（温度高于60℃的热水）的太阳能系统可产生的电量。C），从热力学第一定律和第二定律的观点来看。此外，分析了将这些循环耦合到混合太阳能光伏-热能收集器系统（PV / T）以增加相同表面积的总发电量对性能的影响。尤其是，PV / T系统用于增加太阳能系统的产量，因为在炎热的气候下（例如巴西的气候）光伏电池的效率会降低。结果表明，KCS11的火用效率高于ORC。然而，对于设计研究而言，作为PV / T集热器配置的触底循环的两个循环都增加了理论总发电量，每单位面积约0.4 kW。