연구논문집

Korea Institute of Machinery & Materials (한국기계연구원)
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A Performance test of Stirling Cryocooler by Frequency Characteristics

스터링 냉동기의 주파수 특성에 의한 성능평가에 관한 연구

  • 박성제 (한국기계연구원 열유체환경연구부) ;
  • 홍용주 (한국기계연구원 열유체환경연구부) ;
  • 김효봉 (한국기계연구원 열유체환경연구부) ;
  • 고득용 (한국기계연구원 열유체환경연구부) ;
  • 오군섭 (한국기계연구원 열유체환경연구부) ;
  • 김종학 ((주)우영)
  • Published : 2000.12.20
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Abstract

A free piston and free displacer(FPFD) Stirling cryocooler for cooling infrared and cryo-sensors is currently under development at KIMM(Korea Institute of Machinery & Materials). A Stirling cryocooler is relatively compact, reliable, commercially available, and uses helium as a working fluid. The FPFD stirling cryocooler consists of two compressor pistons driven by linear motors which makes pressure waves and a pneumatically driven displacer piston with regenerator. The FPFD Stirling cryocooler employs 1) the Stirling cycle for refrigeration, 2) linear for driving the cryocooler, 3) spring and gas support systems, and 4) fine gap for clearance seals. It is the most suitable design for a mechanical cryocooler utilized in night vision environment. In order to get optimum operating frequency, natural frequency of piston and displacer, optimum phase angle between piston and displacer, cooling capacity, performance tests of the Stirling cryocooler by the frequency characteristics were performed.

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