The objective of this study is the investigation of a cogeneration system for heating and electricity production, which is driven by solar dish concentrators. There is an organic Rankine cycle (ORC) driven by the solar field and produces electricity with its turbine and heating from its condenser. The solar field includes 100 m² of solar dish concentrators with spiral absorber and an insulated storage tank of 4 m³ storage volume. The system is examined parametrically for different pressure levels in the turbine inlet and superheating degree. The system exergy efficiency is maximized for a superheating of 30 K and a maximum pressure equal to 70% of the toluene critical pressure. In this case, the system produces 12.41 kW electricity, 28.55 kW heating, while the energy efficiency is 51.20%, and the exergy efficiency is 20.69%. Moreover, the system is examined for a typical sunny day, and it is found that the electricity production is 125.6 kWh, the heating production 288.86 kWh, the energy efficiency 48.96%, and the exergy efficiency 19.77%. In the end, the simple payback period of the examined system is found at 6.28 years, which is a good value.

中文翻译：

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太阳能碟形聚光器驱动的热电联产系统

本研究的目的是研究由太阳能碟形聚光器驱动的用于加热和发电的热电联产系统。有一个由太阳能场驱动的有机朗肯循环 (ORC)，并通过其涡轮机产生电力并通过其冷凝器加热。太阳能场包括 100 m ²带有螺旋吸收器的太阳能盘式聚光器和 4 m ³绝缘储罐存储量。该系统在涡轮进口和过热度的不同压力水平下进行参数检查。对于 30 K 的过热和等于甲苯临界压力的 70% 的最大压力，系统火用效率最大化。在这种情况下，系统产生12.41 kW电力，28.55 kW加热，而能效为51.20%，火用效率为20.69%。此外，对该系统进行了典型晴天的检查，发现发电量为125.6 kWh，产热量为288.86 kWh，能效为48.96%，火用效率为19.77%。最终，被测系统的简单投资回收期为 6.28 年，这是一个很好的价值。