Journal of the Korean Institute of Gas (한국가스학회지)

The Korean Institute of GAS (한국가스학회)
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Fabrication and Study on the Performance Characteristics of a Scroll Expander for Organic Rankine Cycle

유기랭킨사이클용 소형 스크롤 팽창기 제작 및 성능 특성 연구

  • Baek, Seungdong (School of Mechanical Engineering, Pusan National University) ;
  • Sung, Taehong (School of Mechanical Engineering, Pusan National University) ;
  • Lee, Minseok (School of Mechanical Engineering, Pusan National University) ;
  • Kim, Kyung Chun (School of Mechanical Engineering, Pusan National University)
  • Received : 2016.05.17
  • Accepted : 2016.10.13
  • Published : 2016.10.31
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Abstract

In this work, the open-drive oil free air compressor is modified to activate an organic Rankine cycle system as an expanding machine. The shape of the modified scroll expander case is a rectangular parallelepiped and the size of the case is $0.0394m^3$. The scroll expander is operated in an ORC using R245fa as working fluid with various working conditions for the performance test. The test data points are used to calculate the parameters of the scroll expander semi-empirical simulation model. The simulation results are compared with the experimental results to validate the simulation model.

본 연구에서는 개방형 무급유식 스크롤 압축기를 개조하여 유기랭킨사이클(ORC)용 소형의 스크롤 팽창기를 설계 및 제작하였다. 팽창기 케이스는 직육면체 형태로 총 체적은 $0.0394m^3$이며, 성능특성 연구를 위해 작동유체로 R245fa를 사용하는 ORC 사이클을 구축하고, 다양한 팽창기 입구압력 및 회전속도 조건에서 성능시험을 수행하였다. 성능시험에서 획득한 열역학적 물성값을 스크롤 팽창기의 semi-empirical 시뮬레이션 모델에 적용해 파라미터를 계산하고, 열역학적 분석을 통해 계산한 실험값과 시뮬레이션값의 비교를 수행하였다.

Keywords

References

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