Title: Exergy analysis and performance improvement of direct steam-generated solar-based transcritical CO₂ Rankine cycle with energy storage

Authors: Serpil Celik Toker; Onder Kizilkan; Hiroshi Yamaguchi

Addresses: Department of Mechanical Engineering, Faculty of Technology, Isparta University of Applied Sciences, 32200, Isparta, Turkey ' Department of Mechanical Engineering, Faculty of Technology, Isparta University of Applied Sciences, 32200, Isparta, Turkey ' Energy Conversion Research Center, Doshisha University, Kyoto, 630-0321, Japan

Abstract: In this particular study, the researchers conducted energy and exergy analyses of a solar-based transcritical CO₂ Rankine cycle in order to improve its performance by integrating a regenerator and an energy storage unit. For the assessment, the system's features are drawn from genuine experimental research undertaken at Doshisha University in Kyoto, Japan. The effects of employing a regenerator and an energy storage tank were examined theoretically in order to determine the potential for enhancing the performance of the cycle. According to the data analysis, there has been a substantial boost in the energy produced, registering an impressive 22.7% improvement.

Keywords: solar energy; transcritical CO₂ Rankine cycle; energy; exergy; heat storage.

DOI: 10.1504/IJEX.2024.140184

International Journal of Exergy, 2024 Vol.44 No.3/4, pp.279 - 292

Received: 26 Jun 2023
Accepted: 01 Apr 2024
Published online: 27 Jul 2024 *

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