한국수소및신에너지학회논문집 (Journal of Hydrogen and New Energy)

  • 제19권6호
  • /
  • Pages.537-544
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  • 2008
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  • 1738-7264(pISSN)
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  • 2288-7407(eISSN)
한국수소및신에너지학회 (The Korean Hydrogen and New Energy Society)
권호 표지

$CO_2$ 단열 모세관내 유동 특성

Flow Characteristics in an Adiabatic Capillary Tube of Carbon Dioxide

  • 노건상 (동명대학교 냉동공조공학과) ;
  • 손창효 (부경대학교 기계공학부)
  • Roh, Geon-Sang (Department of Refrigeration and Air-conditioning Engineering, Tong Myong Univ.) ;
  • Son, Chang-Hyo (School of Mechanical Engineering, Pukyong National Univ.)
  • 발행 : 2008.12.30
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초록

In this paper, flow characteristics of an adiabatic capillary tube in a transcritical $CO_2$ have been investigated employing the homogeneous model. The model is based on fundamental equations of mass, energy and momentum which are solved simultaneously. Two friction factors(Churchill) and viscosity(McAdams) are comparatively used to investigate the flow characteristics. Supercritical and subcritical thermodynamic and transport properties of $CO_2$ are calculated employing EES property code. Flow characteristics analysis of $CO_2$ adiabatic capillary tube is presented to offer the basic design data for the operating parameters. The operating parameters considered in this study include inlet temperature and pressure of an adiabatic capillary tube, evaporating temperature and inner diameter tube. The main results were summarized as follows : inlet temperature and pressure of an adiabatic capillary tube, evaporating temperature, mass flowrate and inner diameter of $CO_2$ adiabatic capillary tube have an effect on length of an adiabatic capillary tube.

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참고문헌

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