Journal of Mechanical Science and Technology

  • 제17권5호
  • /
  • Pages.758-765
  • /
  • 2003
  • /
  • 1738-494X(pISSN)
  • /
  • 1976-3824(eISSN)
대한기계학회 (The Korean Society of Mechanical Engineers)
권호 표지

A Study on Pressure Drop Characteristics of Refrigerants in Horizontal Flow Boiling

  • Lim, Tae-Woo (School of Mechanical Engineering, Pukyong National University) ;
  • Han, Kyu-Il (School of Mechanical Engineering, Pukyong National University)
  • 발행 : 2003.05.01
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

An experimental investigation on the flow pattern and pressure drop was carried out for both an adiabatic and a diabatic two-phase flow in a horizontal tube with pure refrigerants R134a and R123 and their mixtures as test fluids. The observed flow patterns were compared to the flow pattern map of Kattan et al., which predicted well the present data over the entire regions of mass velocity in this study. The measured frictional pressure drop in the adiabatic experiments increased with an increase in vapor quality and mass velocity These data were compared to various correlations proposed in the past for the frictional pressure drop. The Chisholm correlation underpredicted the present data both for pure fluids and their mixtures in the entire mass velocity range of 150 to 600 kg/m$^2$s covered in the measurements, white the Friedel correlation was found to overpredict the present data in the stratified and stratified-wavy flow region, and to underpredict in the annular flow region.

키워드

참고문헌

  1. Barajas, A. M. and Panton, R. L., 1993, The Effects of Contact Angle on Two-Phase Flow in Capillary Tubes, Int. J. Multiphase Flow, Vol. 19, pp.337-346 https://doi.org/10.1016/0301-9322(93)90007-H
  2. Chisholm, D., 1973, Pressure Gradients Due to Friction During the Flow of Evaporating Two-Phase Mixtures in Smooth Tubes and Channels, Int. J. Heat Mass Transfer, Vol. 16, pp. 347-358 https://doi.org/10.1016/0017-9310(73)90063-X
  3. Collier, J. G. and Thome, J. R., 1994, Convective Boiling and Condensation, 3rd Edition. Oxford University Press, London
  4. Friedel, L., 1979, Improved Friction Pressure Drop Correlations for Horizontal and Vertical Two-Phase Pipe Flow, Presented at the European Two-phsae Flow Group Meeting, Ispra, Italy, Paper E2, June, Vol. 18, pp. 485-492
  5. Hosler, E. R., 1968, Flow Patterns in High Pressure Two Phase (Steam-Water) Flow with Heat Addition, AIChE Symp. Ser. Vol. 64, pp.54-66
  6. Jung, D. S. and Radermacher, R., 1989, Prediction of Pressure Drop During Horizontal Annular Flow Boiling of Pure and Mixed Refrigerants, Int. J. Heat Mass Transfer, Vol. 32, pp.2435-2446 https://doi.org/10.1016/0017-9310(89)90203-2
  7. Kattan, N., Thome, J. R. and Favrat, D., 1998, Flow Boiling in Horizontal Tubes, Partl, J. Heat Transfer, Vol. 120, pp. 140-147 https://doi.org/10.1115/1.2830037
  8. Lockhart, R. W. and Martinelli, R. C., 1949, Proposed Correlation of data for Isothermal TwoPhase, Two-Component Flow in Pipes, Chem. Engng. Prog. Vol. 45, pp. 39-48
  9. Martinelli, R. C. and Nelson, D. B., 1948, Prediction of Pressure Drop During Forced-Circulation Boiling of Water, Trans. ASME Vol. 70, pp.695-702
  10. Nishiumi, H. and Saito, S., 1977, Correlation of the Binary Interaction Parameter of the Modified Generalized BWR Equation of State, J. Chem. Eng. Japan, Vol. 10, pp. 176-180 https://doi.org/10.1252/jcej.10.176
  11. Pierre, B., 1966, Flow Resistance with Boiling Refrigerants, ASHRAE Trans., pp.28-42
  12. Premoli, A., Francesco, D. and Prina, A., 1970, An Empirical Correlation for Evaluating Two-Phase Mixture Density Under Adiabatic Conditions, European Two-Phase Flow Group Meeting, Milan
  13. Reid, R. C., Prausnitz, J. M. and Sherwood, T. K., 1977, The Properties of Gases and Liquids, 3rd Edn., McGraw-Hill, New York
  14. Thorn, J. R. S., 1964, Prediction of Pressure Drop During Forced Circulation Boiling of Water, Int. J. Heat Mass Transfer, Vol. 7, pp. 709-724 https://doi.org/10.1016/0017-9310(64)90002-X
  15. VDI-Warmeatlas, 1993, Heat Transfer to Boiling Saturated Liquids, VDI Heat Atlas, Chapter Hbbl. Dusseldorf, Germany: VDI-Vedag GmbH (in English)
  16. Whalley, P. B., 1987, Boiling, Condensation and Gas-Liquid Flow, Oxford University Press, New York