The KSFM Journal of Fluid Machinery (한국유체기계학회 논문집)

Korean Society for Fluid machinery (한국유체기계학회)
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Performance Measurements of A Stirling Engine for Household Micro Combined Heat and Power with Heat Source Temperatures and Cooling Flow Rates

가정용 열병합 발전을 위한 스털링 엔진의 열원 온도 및 냉각수 유량에 따른 성능 실험

  • Sim, Kyuho (Department of Mechanical System Design Engineering, Seoul Nat'l Univ. of Sci. & Tech.) ;
  • Kim, Mingi (Department of Mechanical System Design Engineering, Seoul Nat'l Univ. of Sci. & Tech.) ;
  • Lee, Yoon-Pyo (Korea Institute of Science and Technology) ;
  • Jang, Seon-Jun (Innovation KR.)
  • 심규호 (서울과학기술대학교 기계시스템디자인공학과) ;
  • 김민기 (서울과학기술대학교 기계시스템디자인공학과) ;
  • 이윤표 (한국과학기술연구원) ;
  • 장선준 (이노베이션케이알)
  • Received : 2014.10.15
  • Accepted : 2014.01.14
  • Published : 2015.02.01
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Abstract

A Beta-type Stirling engine is developed and tested on the operation stability and cycle performance. The flow rate for cooling water ranges from 300 to 1500 ml/min, while the temperature of heat source changes from 300 to $500^{\circ}C$. The internal pressure, working temperatures, and operation speed are measured and the engine performance is estimated from them. In the experiment, the rise in the temperature of heat source reduces internal pressure but increases operation speed, and overall, enhances the power output. The faster coolant flow rate contributes to the high temperature limit for stable operation, the cycle efficiency due to the alleviated thermal expansion of power piston, and the heat input to the engine, respectively. The experimental Stirling engine showed the maximum power output of 12.1 W and the cycle efficiency of 3.0 % when the cooling flow is 900 ml/min and the heat source temperature is $500^{\circ}C$.

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References

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