한국항공우주학회지 (Journal of the Korean Society for Aeronautical & Space Sciences)

  • 제43권12호
  • /
  • Pages.1108-1115
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  • 2015
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  • 1225-1348(pISSN)
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  • 2287-6871(eISSN)
한국항공우주학회 (The Korean Society for Aeronautical and Space Sciences)
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오리피스에서 기체의 표준유량을 이용한 산소와 헬륨의 누설량 측정에 관한 연구

Study on Leakage Measurements of Oxygen and Helium Using Standard Gas Flow Rates in a Orifice Flow

  • 투고 : 2015.06.23
  • 심사 : 2015.11.16
  • 발행 : 2015.12.01
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초록

본 연구에서는 마우스피스 방법을 이용하여 산소의 질량유량 측정과 헬륨의 체적유량 측정에 대한 관계식을 정리하였다. 마우스피스 방법은 상사된 실험식을 이용함으로써 시험비용을 절감할 수 있다. 마우스피스 방법에서는 기체헬륨을 측정하여 용이하게 액체산소의 누설량을 측정할 수 있다. 시제품의 누설량 측정에서 상온과 극저온 상태의 헬륨과 산소간의 누설량 관계를 이해하기 위해 실험을 수행하여 비교하였다. 헬륨의 누설 체적유량[$A.m{\ell}/s$]은 액체상태의 산소 누설의 질량유량[g/s]에 대비하여 174배였다. 실험식과 비교된 계산식은 미국 국립기술표준원의 자료를 이용하여 증명하였다.

In this study, correlation equations were arranged about mass flow rates of oxygen and volume flow rates of helium using a mouthpiece method. The mouthpiece method can reduce examination cost by using similar empirical formula. Instead of liquid oxygen, in the mouthpiece method, gas helium can be measured in order to determine the leakage amount of liquid oxygen conveniently. Experiment was conducted and compared to understand leakage amount relation between the helium and the oxygen for prototype item under a room and a cryogenic temperature conditions. The leakage volume flow rate [$A.m{\ell}/s$] of the helium was 174 times higher than mass flow rate [g/s] of the oxygen leakage at liquid state. The derived correlation equations were verified using data from the National Institute of Standards and Technology (NIST).

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참고문헌

  1. Shnyakin, V., Design Documentation Technical Specification and Analyses of the Lox Supply System and Its Components for Cryogenic L.R.E, YUZHNOYE Design Office, 2009.
  2. Lee, J. Y. and Jung, T. K., "The Developing Trend of valves for Liquid Rocket Engine", Journal of the Current Industrial and Technologic Trends in Aerospace, Vol. 2, 2009, pp.14-24.
  3. EMERSON. Process Management, Flow Curves and Calculations, Technical Information of Tescom Regulator, 2012.
  4. Lee, J. Y., Conversion of Volumetric Flow at Gas Flow, CSG-LJY-04-012, Design Memo, 2004.
  5. Miller, D. S., Internal Flow System, The Fluid Engineering Centre, Inc., 1990.
  6. McCloy, D., Martin, H. R., Control of Fluid Power : Analysis and Design, John Wiley & Sons, 1980.
  7. Jamnes E., John, A., Gas Dynamics, Allyn and Vacon, INC., 1984.
  8. Lee, J. Y. and Lee, S. Y., "Experiment and Performance Prediction on Inherent Flow Coefficient of a Solenoid Valve", Journal of the Aerospace Engineering and Technology, Vol. 1, Jun. 2011, pp.70-78.
  9. Lee, J. Y., Leakage Test of Oxygen and Helium, CSG-LJY-11-010, Design Memo, 2011.
  10. Lee, J. Y., Using a Cryogenic Fluid Heat Exchanger Valve Leakage Measuring Device, Patent Number 10-1445751, 2014.
  11. Huh, H. I., Experimental Study of Similarity between Helium Leakage Volume and Liquid Oxygen Leakage, Researches Commissioned by a KSLV-II, 2013.
  12. http://webbook.nist.gov/chemistry/