Korean Journal of Air-Conditioning and Refrigeration Engineering (설비공학논문집)

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
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Experiments on Condensation Heat Transfer and Pressure Drop in Plate Heat Exchangers with Different Chevron Angles

판형 열교환기의 세브론각에 따른 응축열전달 및 압력강하 실험

  • 김윤호 (고려대학교 기계공학과 대학원) ;
  • 한동혁 (고려대학교 기계공학과 대학원) ;
  • 이규정 (고려대학교 기계공학과)
  • Published : 2001.11.01
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Abstract

Experiments on the condensation heat transfer and pressure drop in the brazed type plate heat exchangers are performed with refrigerants R410A/R22. To investigate the geometric effect, plate heat exchangers with the same pitch and height but different $45^{\circ},\;35^{\circ}and\;20^{\circ}$ chevron angles are used. Varying the mass flux of refrigerant (13~34 kg/$m^2$), the condensing temperatures ($20^{\circ}C\;and\;30^{\circ}C$) and the vapor quality (from 0.9 to 0.15) at the same constant heat flux ($5kW/m^2$), the condensation heat transfer coefficients and pressure drops are measured. The heat transfer coefficients decrease slightly with increasing the condensing temperature at a given mass flux in all plate heat exchangers. The pressure drop increases with increasing the mass flux and the quality and decreasing the condensing temperature and the chevron angle.

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References

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