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Cycle Analysis and Experiment for a Small-Scale Organic Rankine Cycle Using a Partially Admitted Axial Turbine

부분분사 축류형 터빈을 이용한 소규모 유기랭킨 사이클의 실험 및 예측에 관한 연구

  • 조수용 (경상대학교 항공기부품기술연구센터) ;
  • 조종현 (선테크(주) 기술연구소)
  • Received : 2015.05.26
  • Accepted : 2015.09.03
  • Published : 2015.10.01

Abstract

Organic Rankine cycle (ORC) has been used to generate electrical or mechanical power from low-grade thermal energy. Usually, this thermal energy is not supplied continuously at the constant thermal energy level. In order to optimally utilize fluctuating thermal energy, an axial-type turbine was applied to the expander of ORC and two supersonic nozzle were used to control the mass flow rate. Experiment was conducted with various turbine inlet temperatures (TIT) with the partial admission rate of 16.7 %. The tip diameter of rotor was to be 80 mm. In the cycle analysis, the output power of ORC was predicted with considering the load dissipating the output power produced from the ORC as well as the turbine efficiency. The predicted results showed the same trend as the experimental results, and the experimental results showed that the system efficiency of 2 % was obtained at the TIT of $100^{\circ}C$.

Keywords

References

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