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

  • 제14권3호
  • /
  • Pages.231-239
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  • 2002
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  • 1229-6422(pISSN)
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  • 2465-7611(eISSN)
대한설비공학회 (The Society of Air-Conditioning and Refrigerating Engineers of Korea)
권호 표지

마이크로휜관 내 단상 냉각 유동 열전달 및 압력 강하 특성에 관한 실험적 연구

Experiments on Single Phase Cooling Heat Transfer and Pressure Drop Characteristics in Microfin Tubes

  • 이규정 (고려대학교 기계공학과) ;
  • 한동혁 (고려대학교 기계공학과 대학원)
  • 발행 : 2002.03.01
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초록

Experiments on the single phase cooling heat transfer and pressure drop with microfin tubes were performed using water as a test fluid. Experimental data were obtained in the range of Reynolds number 3000 ~40000 and Prandtl number 4-6. The data of microfin tubes presented the characteristics of rough surface tube in pressure drop and heat transfer Experimental data were compared with the heat transfer and friction factor correlations of smooth tubes. Heat transfer enhancements of microfin tubes were lower than pressure drop penalty factors. The helix angle is more significant parameter in both of the pressure drop and heat transfer than the relative roughness. The correlations of Nusselt number and friction factor were suggested for the tested microfin tubes. Maximum deviations between correlations and experimental data were within $\pm15$% for Nusselt number and $\pm10$% for friction factor.

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참고문헌

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