Transactions of the Korean Society of Mechanical Engineers B (대한기계학회논문집B)

The Korean Society of Mechanical Engineers (대한기계학회)
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Study on Pressure Drop Characteristics in Multi-Channel Tubes for Automotive Condenser

자동차 응축기용 다채널관의 압력강하 특성에 관한 연구

  • 전창덕 (충주대학교 기계공학과) ;
  • 정재원 (연세대학교 대학원 기계공학과) ;
  • 이진호 (연세대학교 기계공학과) ;
  • 강신형 (건양대학교 기계공학과)
  • Received : 1998.12.07
  • Published : 1999.07.01
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Abstract

Experiment was performed to study the characteristics of pressure drop of multi-channel tubes for automotive condenser using HFC-134a. Single phase liquid and two phase flow pressure drop were measured in one rectangular plain and three micro-fin tubes with 10 channels. Data are presented for the following range of variables: mass flux(200 to $600kg/m^2s$), and inlet saturation pressure of the refrigerant(1.0 and 1.6MPa). For subcooled flow, pressure drops are 10% and 12% higher than that predicted by the Petukhov equation with hydraulic diameter respectively. Two-phase flow pressure drop are compared with the previously proposed correlations, and well predicted by modified correlation that was derived from Traviss correlation. and correlated within -30~+20%. Also experimental data are correlated within -56%~+18% by Webb's prediction method based on the equivalent mass velocity concept originally proposed by Akers et al.

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