A solar energy storage and power generation system based on supercritical carbon dioxide

Jia Liu, Haisheng Chen, Yujie Xu, Liang Wang and Chunqing Tan

Renewable Energy, 2014, vol. 64, issue C, 43-51

Abstract: This paper proposes a new type of solar energy based power generation system using supercritical carbon dioxide and heat storage. The power generation cycle uses supercritical carbon dioxide as the working fluid and integrates the supercritical carbon dioxide cycle with an efficient high-temperature heat storage. The analysis shows that the new power generation system has significantly higher solar energy conversion efficiency in comparison to the conventional water-based (steam) system. At the same time, the heat storage not only overcomes the intermittent nature of solar energy but also improves the overall system efficiency. The study further reveals that the high temperatures and high pressures are favorable for solar energy storage and power generation. Moreover the expander and the heat storage/regenerator are found to be the key components that determine the overall system performance.

Keywords: Solar power system; Supercritical CO2; Heat storage; Heat regenerator (search for similar items in EconPapers)
Date: 2014
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (19)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:64:y:2014:i:c:p:43-51

DOI: 10.1016/j.renene.2013.10.045

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