한국유체기계학회 논문집 (The KSFM Journal of Fluid Machinery)

한국유체기계학회 (Korean Society for Fluid machinery)
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냉매(R245fa)를 이용한 유기랭킨 사이클에 관한 연구

A Study on the Organic Rankine Cycle Using R245fa

  • 조수용 (경상대학교 항공기부품기술연구센터) ;
  • 조종현 (선테크(주) 기술연구소) ;
  • 김진환 (한국항공우주연구원 터보펌프개발그룹)
  • Cho, Soo-Yong (Gyeongsang National University, Research Center for Aircraft Parts Technology) ;
  • Cho, Chong-Hyun (Suntech, R&D center) ;
  • Kim, Jinhan (Korea Aerospace Research Institute, Turbopump Department)
  • 투고 : 2012.08.07
  • 심사 : 2013.04.12
  • 발행 : 2013.06.01
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초록

The organic Rankine cycle has been widely used to convert the renewable energy such as the solar energy, the geothermal energy, or the waste energy etc., to the electric power. Some previous studies focused to find what kind of refrigerant would be a best working fluid for the organic Rankine cycle. In this study, R245fa was chosen to the working fluid, and the cycle analysis was conducted for the output power of 30kW or less. In addition, properties (temperature, pressure, entropy, and enthalpy etc.) of the working fluid on the cycle were predicted when the turbine output power was controlled by adjusting the mass flowrate. The configuration of the turbine was a radial-type and the supersonic nozzles were applied as the stator. So, the turbine was operated in partial admission. The turbine efficiency and the optimum velocity ratio were considered in the cycle analysis for the low partial admission rate. The computed results show that the system efficiency is affected by the partial admission rate more than the temperature of the evaporator.

키워드

참고문헌

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피인용 문헌

  1. vol.17, pp.2, 2014, https://doi.org/10.5293/kfma.2014.17.2.068
  2. Turbine Impeller 형상이 유동특성에 미치는 영향에 관한 연구 vol.13, pp.4, 2013, https://doi.org/10.14775/ksmpe.2014.13.4.036
  3. 저온 폐열을 이용하기 위한 유기랭킨 사이클의 작동유체 선정에 관한 연구 vol.10, pp.4, 2013, https://doi.org/10.7849/ksnre.2014.10.4.036