Korean Journal of Air-Conditioning and Refrigeration Engineering (설비공학논문집)

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
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Operating Characteristics of a Scroll Expander Used in Organic Rankine Cycle

유기랭킨사이클 적용 스크롤 팽창기 성능 특성 연구

  • Shin, Dong-Gil (Engine R&D Team, Korea Institute of Machinery and Materials) ;
  • Kim, Young-Min (Engine R&D Team, Korea Institute of Machinery and Materials) ;
  • Kim, Chang-Gi (Engine R&D Team, Korea Institute of Machinery and Materials)
  • 신동길 (한국기계연구원 그린동력연구실) ;
  • 김영민 (한국기계연구원 그린동력연구실) ;
  • 김창기 (한국기계연구원 그린동력연구실)
  • Received : 2011.07.26
  • Published : 2011.12.10
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Abstract

The rapid increases in global energy demand and global warming need renewable energy sources such as solar thermal energy, biomass energy and waste heat. A ORC-based micro-CHP system(< 10 kWe) is one of the effective means to use renewable energy and solve energy problems because of its compactness, flexibilities and lower cost compared to other systems. The most important core components of the ORC is the expander which has a strong effect on the cycle efficiency. In the range of power output from 1 to 10 kW, the scroll expander is a good choice due to its performance and reliability. In this study, we have carried out an experimental study on an ORC equipped with oil-free scroll expander working with refrigerant R134a. We have measured power output and thermal efficiencies of the ORC and analyzed correlation between volumetric efficiencies of the expander and thermal efficiencies of the ORC.

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References

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Cited by

  1. Development of Small-scale Organic Rankine Cycle System and Study on its Operating Characteristics vol.37, pp.10, 2013, https://doi.org/10.3795/KSME-B.2013.37.10.919