Experimental investigation on condensation heat transfer and pressure drop of new HFC refrigerants (R134a, R125, R32, R410A, R236ea) in a horizontal smooth tube

International Journal of Refrigeration

Volumn 24, Issue 1, 2001, Pages 73-87

  Cavallini, A ^a   Censi, G ^a   Del Col, D ^a   Doretti, L ^a   Longo, G A ^a   Rossetto, L ^a  

^a UNIVERSITY OF PADOVA   (Italy)

Author keywords

[No Author keywords available]

Indexed keywords

CONDENSATION; FLUOROCARBONS; HEAT TRANSFER; HEAT TRANSFER COEFFICIENTS; MATHEMATICAL MODELS; PRESSURE DROP; THERMAL EFFECTS; TUBES (COMPONENTS);

HYDROFLUOROCARBONS; SATURATION TEMPERATURE; VAPOR QUALITY;

REFRIGERANTS;

EID: 0035155113     PISSN: 01407007     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0140-7007(00)00070-0     Document Type: Article

References (20)

1. Kosky P.G., Staub F.W. Local condensing heat transfer coefficients in the annular flow regime. AIChE J. 17:1971.
2. Traviss D.P., Rohsenow W.M., Baron A.B. Forced convection inside tubes. a heat transfer equation for condenser design ASHRAE Trans. 79:1972;157-165.
3. Dobson M.K., Chato J.C. Condensation in smooth horizontal tubes. J. Heat Transfer, ASME. 120:1998;193-213.
4. NIST, Refprop, Version 6.01, US Department of Commerce, 1999.
5. Tang L. Empirical study of new refrigerant flow condensation inside horizontal smooth and micro-fin tubes. University of Maryland at College Park, PhD thesis, 1997; pp. 251.
6. Ebisu T, Torikoshi K. Experimental study on evaporation and condensation heat transfer enhancement for R407C using herringbone heat transfer tube. ASHRAE Trans 1998; 104(2).
7. Haraguchi H., Koyama S., Fujii T. Condensation of refrigerants HCFC 22, HFC 134a and HCFC 123 in a horizontal smooth tube (2nd report, proposal of empirical expressions for local heat transfer coefficient). Trans. JSME. 60(n.574):1994;245-252.
8. Eckels SJ, Tesene BA. A comparison of R22, R134a, R410A, and R407C condensation performance in smooth and enhanced tubes: part I, heat transfer. ASHRAE Trans 1999, 105.
9. Cavallini A., Zecchin R. A dimensionless correlation for heat transfer in forced convection condensation. 6th Int. Heat Transfer Conf., Tokyo. 3:1974;309-313.
10. Shah M.M. A general correlation for heat transfer during film condensation inside pipes. Int. J. Heat Mass Transfer. 22:1979;547-556.
11. Nusselt W. Die Oberflachenkondensation des Wasserdampfes. Z. Ver. Dt. Ing. 60:1916;569-575. 541-546.
12. Jaster H., Kosky P.G. Condensation heat transfer in a mixed flow regime. Int. J. of Heat Mass Transfer. 19:1976;95-99.
13. Cavallini A, Del Col D, Doretti L, Longo GA, Rossetto L. Condensation of refrigerants inside plain and enhanced tubes. Proc. 3rd European Thermal Sciences Conf., Heidelberg 2000;1:51-60.
14. Cavallini A, Del Col D, Doretti L, Longo GA, Rossetto L. Condensation heat transfer of new refrigerants: advantages of high pressure fluids. Proc. 2000 Int. Refrig. Conf. Purdue, 2000;177-84.
15. Breber G., Palen J., Taborek J. Prediction of horizontal tube-side condensation of pure components using flow regime criteria. J. of Heat Transfer. 102:1980;471-476.
16. Tandon T.N., Varma H.K., Gupta C.P. A new flow regime map for condensation inside horizontal tubes. ASME J. Heat Transfer. 104:1982;763-768.
17. Smith S.L. Void fraction in two-phase flow. a correlation based on equal velocity head model Heat and Fluid Flow. 1( n. 1):1971;22-39.
18. Friedel L. Pressure drop during gas/vapor-liquid flow in pipes. Int. Chem. Eng., July. 20:1980;352-367.
19. Mickley HS, Ross RC, Squyers AL, Stewart WE. Heat, mass and momentum transfer for flow over a flat plate with blowing or suction, Rep. No. NACA-TN-3208, 1954.
20. Rouhani SZ. Subcooled void fraction. AB Atomenergi Sweeden, Internal Rept. AE-RTV841, 1969.