The KSFM Journal of Fluid Machinery (한국유체기계학회 논문집)

Korean Society for Fluid machinery (한국유체기계학회)
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An Experimental Study on the Organic Rankine Cycle to Utilize Fluctuating Thermal Energy

가변열원에 대응하기 위한 ORC 사이클의 실험적인 연구

  • Cho, Soo-Yong (Gyeongsang National University, Research Center for Aircraft Parts Technology) ;
  • Cho, Chong-Hyun (SunTech Co. LTD, Technology R&D Center)
  • 조수용 (경상대학교 항공기부품기술연구센터) ;
  • 조종현 (선테크(주) 기술연구소)
  • Received : 2015.02.01
  • Accepted : 2015.07.20
  • Published : 2015.08.01
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Abstract

The system design of the Organic Rankine Cycle(ORC) is greatly influenced by the thermal properties such as the temperature or the thermal capacity of heat source. Typically waste heat, solar energy, geothermal energy, and so on are used as the heat source for the ORC. However, thermal energy supplying from these kinds of heat sources cannot be provided constantly. Hence, an experimental study was conducted to utilize fluctuating thermal energy efficiently. For this experiment, an impulse turbine and supersonic nozzles were applied and the supersonic nozzle was used to increase the velocity at the nozzle exit. In addition, these nozzles were used to adjust the mass flowrate depending on the amount of the supplied thermal energy. The experiment was conducted with maximum three nozzles due to the capacity of thermal energy. The experimented results were compared with the predicted results. The experiment showed that the useful output power could be producted from low-grade thermal energy as well as fluctuating thermal energy.

Keywords

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