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A Study on Pressure Drop in Two-Phase Flow Boiling of Refrigerants in Horizontal Tube  

임태우 (부경대학교 기계공학부)
김준효 (목포해양대학교 기관시스템공학부)
Publication Information
Korean Journal of Air-Conditioning and Refrigeration Engineering / v.15, no.6, 2003 , pp. 510-517 More about this Journal
Abstract
An experimental study on the pressure drop during flow boiling for pure refrigerants R134a and Rl23, and their mixture was carried out in a uniformly heated horizontal tube. Tests were run at a pressure of 0.6 MPa and in the ranges of heat flux 5~50 kW/m$^2$, vapor quality 0~100 percent and mass velocity of 150~600 kg/m$^2$s. Generally, the two-phase frictional multiplier is used to predict the frictional pressure drop during the two-phase flow boiling. The obtained results have been compared to the existing various correlations for the two-phase multiplier. Also, the frictional pressure drop was compared to a few available correlations; The Lockhart-Martinelli correlation considerally overpredicted the frictional pressure drop data for mixture as well as pure components in the entire mass velocity ranges employed in the present study, while the Chisholm correlation underpredicted the present data. The Friedel correlation was found to satisfactorily correlate the frictional pressure drop data except for a low quality region.
Keywords
Acceleration pressure drop; Frictional pressure drop; Pure refrigerant; Two-phase flow boiling;
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  • Reference
1 Proposed correlation of data for isothermal two-phase, two-component flow in pipes /
[ Lockhart,R.W.;Martinelli,R.C. ] / Chemical Engineering Progress
2 Prediction of pressure drop during forced-cir-culation boiling of water /
[ Martinelli,R.C.;Nelson,D.B. ] / Trans. of American Society Mechanical Engineers
3 A theoretical basic for the Lockhard-Martinelli correlation for two-phase flow /
[ Chisholm,D. ] / International Journal of Heat and Mass Transfer   ScienceOn
4 Improved friction pressure drop correlations for horizontal and vertical two-phase pipe flow /
[ Friedel,L. ] / Presented at the European Two-phsae Flow Group Meeting, Ispra, Italy, Paper E2
5 /
[ Whalley,P.B. ] / Boiling Condensation and Gas-Liquid Flow
6 An empirical correlation for evaluating two-phase mixture density under adiabatic conditions /
[ Premoli,A.;Francesco,D.;Prina,A. ] / European Two-Phase Flow Group Meeting
7 Correlation of the binary interaction parameter of the modified generalized BWR equation of state /
[ Nishiumi,H.;Saito,S. ] / Journal of Chemical Engineering of Japan   ScienceOn
8 Prediction of pressure drop during horizontal annular flow boiling of pure and mixed refrigerants /
[ Jung,D.S.;Radermacher,R. ] / International Journal of Heat and Mass Transfer   ScienceOn
9 /
[ Reid,R.C.;Prausnitz,J.M.;Sherwood,T.K. ] / The Properties of Gases and Liquids(3rd ed.)
10 Pressure gradients due to friction during the flow of evaporating two-phase mixtures in smooth tubes and channels /
[ Chisholm,D. ] / International Journal of Heat and Mass Transfer   ScienceOn
11 Pressure drop during forced convection boiling of binary refrigerant mixtures /
[ Singal,L.C.;Sharma,C.P.;Varma,H.K. ] / Int. J. Multiphase Flow   ScienceOn
12 /
[ Collier,J.G.;Thome,J.R. ] / Convective Boiling and Condensation(3rd ed.)
13 Flow resistance with boiling refrigerants /
[ Pierre,B. ] / ASHRAE Trans.