Energy and exergy analyses of a solar driven trigeneration system using cascaded ejector-vapor compression refrigeration system for low temperature cooling

Yunis Khan, Pawan Kumar Singh, Gaurav Kumar, Hakan Caliskan, Hiki Hong, Utku Kale and Artūras Kilikevičius

Energy, 2025, vol. 334, issue C

Abstract: This study proposes a solar-based trigeneration system for producing power, heating, and cooling at −40 °C for food storage. To improve the performance of the solar-based energy generation system, the organic Rankine cycle (ORC), cascaded ejector refrigeration system (ERS), and vapor compression refrigeration (VCR) system were added to the solar power tower (SPT)-based conventional helium Brayton cycle (HBC). The energy and exergy analyses of this proposed plant were carried out using a numerical method. The results show that the solar plant (SPT-HBC-ORC-ERS-VCR) had an energy efficiency of 60.66 %, exergy efficiency of 35.55 %, and net work output of 15585 kW. Additionally, heating and cooling effects were obtained as 14967 kW and 730 kW for the industrial application and food storage application, respectively. Exergy efficiency of this solar plant is 10.09 % higher than that of a conventional SPT-HBC plant.

Keywords: Energy; Exergy; Trigeneration system; Solar power tower; Cascaded ejector-vapor compression refrigeration system; Low temperature cooling (search for similar items in EconPapers)
Date: 2025
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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:334:y:2025:i:c:s0360544225030191

DOI: 10.1016/j.energy.2025.137377

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