Experimental study on the performance of solar Rankine system using supercritical CO2

Xin-Rong Zhang, Hiroshi Yamaguchi and Daisuke Uneno

Renewable Energy, 2007, vol. 32, issue 15, 2617-2628

Abstract: An experimental study is carried out to investigate the performance of a solar Rankine system using supercritical CO2 as a working fluid. The testing machine of the solar Rankine system consists of an evacuated solar collector, a pressure relief valve, heat exchangers and CO2 feed pump, etc. The solar energy powered system can provide electricity output as well as heat supply/refrigeration, etc. The system performance is evaluated based on daily, monthly and yearly experiment data. The results obtained show that heat collection efficiency for the CO2-based solar collector is measured at 65.0–70.0%. The power generation efficiency is found at 8.78–9.45%, which is higher than the value 8.20% of a solar cell. The result presents a potential future for the solar powered CO2 Rankine system to be used as distributed energy supply system for buildings or others.

Keywords: Solar energy; Supercritical CO2; Rankine cycle; Distributed energy supply system (search for similar items in EconPapers)
Date: 2007
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Citations: View citations in EconPapers (34)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:32:y:2007:i:15:p:2617-2628

DOI: 10.1016/j.renene.2007.01.003

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