Thermodynamic assessment of a novel solar powered trigeneration system for combined power generation, heating, and cooling

Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science Pub Date : 2024-02-18 DOI:10.1177/09544062241230222

Aftab Anjum, RS Mishra, Samsher

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Abstract

Solar power tower (SPT) technology is the mature technology among the various concentrated solar technologies for energy generation. Therefore, it is necessary to develop the efficient energy generation system that utilizes the SPT plant. In the current study, a novel trigeneration system was presented to utilize the SPT for combined power generation, heating, and cooling. The trigeneration system consists a helium Brayton cycle and organic Rankine cycle (ORC) with ejector refrigeration system for recovering the waste heat. The power was produced by the helium Brayton cycle and ORC turbine whereas, cooling and heating was produced simultaneously by the condenser and evaporator respectively. For building applications such as hospitals and hostels, the heating and cooling effects were generated at 50°C and 10°C respectively. Finally, the optimal system exhibits exergy and energy efficiency of 25.12% and 23.3%, respectively, when all the studied parameters are taken into consideration. Apart from this power output, heating and cooling productions were observed as 14,998, 60.52 and 8.25 kW and respectively at the 2.3 of compressor pressure ratio, 197.2°C of inlet temperature of ORC turbine.

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新型太阳能发电、供热和制冷三合一系统的热力学评估

太阳能发电塔（SPT）技术是各种聚光太阳能发电技术中较为成熟的技术。因此，有必要开发利用 SPT 工厂的高效能源发电系统。在当前的研究中，提出了一种新型的三联供系统，利用 SPT 实现发电、供热和制冷的综合利用。三联供系统由氦气布雷顿循环和有机郎肯循环（ORC）组成，并配有用于回收废热的喷射器制冷系统。氦气布雷顿循环和有机郎肯循环涡轮机产生电能，而冷凝器和蒸发器分别同时产生制冷和制热。在医院和宿舍等建筑应用中，加热和冷却效果分别在 50°C 和 10°C 下产生。最后，在考虑到所有研究参数的情况下，最佳系统的放能效率和能效分别为 25.12% 和 23.3%。此外，在压缩机压力比为 2.3、ORC 涡轮机入口温度为 197.2°C 时，输出功率、供热量和制冷量分别为 14998 千瓦、60.52 千瓦和 8.25 千瓦。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science

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