Condensation heat transfer and pressure drop in flattened smooth tubes having different aspect ratios

Experimental Thermal and Fluid Science

Volumn 46, Issue , 2013, Pages 245-253

  Kim, N H ^a   Lee, E J ^a   Byun, H W ^a  

^a SolarLight Ltd   (South Korea)

Author keywords

Condensation; Heat transfer coefficient; Pressure drop; R410A; Tube

Indexed keywords

ANNULAR FLOWS; CONDENSATION HEAT TRANSFER; CONDENSATION HEAT TRANSFER COEFFICIENTS; FLAT TUBE; FRIEDEL CORRELATION; HEAT TRANSFER CORRELATION; HEAT TRANSFER DATA; INNER DIAMETERS; R410A; RMS ERRORS; ROUND TUBES; SATURATION TEMPERATURE; SMOOTH TUBES; STAINLESS TUBES; STRATIFIED FLOWS; TEST RANGE; TUBE;

CONDENSATION; HEAT FLUX; HEAT TRANSFER COEFFICIENTS; PRESSURE DROP; TUBES (COMPONENTS);

ASPECT RATIO;

EID: 84873570189     PISSN: 08941777     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.expthermflusci.2012.12.016     Document Type: Article

References (24)

1. Webb R.L., Iyengar A. Oval finned tube condenser and design pressure limits. J. Enhanced Heat Transfer 2001, 8:147-158.
2. Kim N.H., Kim S.H. Dry and wet air-side performance of a louver-finned heat exchanger having flat tubes. J. Mech. Sci. Technol. 2010, 24:1553-1561.
3. Collier J.G., Thome J.R. Convective Boiling and Condensation 1994, Oxford University Press. third ed.
4. Ghiaansiaan M.S. Two-Phase Boiling and Condensation in Conventional and Miniature Systems 2008, Cambridge University Press.
5. Wilson M.J., Newell T.A., Chato J.C., Infante Ferreira C.A. Refrigerant charge, pressure drop and condensation heat transfer in flattened tubes. Int. J. Refrig. 2003, 26:442-451.
6. Kim M.H., Shin J.S., Bullard C.W. Heat transfer and pressure drop characteristics during R-22 evaporation in an oval microfin tube. J. Heat Transfer 2001, 123:301-308.
7. Moreno Quiben J., Cheng L., da Silva Lima R.J., Thome J.R. Flow boiling in horizontal flatten tubes: Part I - Two-phase frictional pressure drop results and model. Int. J. Heat Mass Transfer 2009, 52:3634-3644.
8. Moreno Quiben J., Cheng L., da Silva Lima R.J., Thome J.R. Flow boiling in horizontal flatten tubes: Part II - Flow boiling heat transfer results and model. Int. J. Heat Mass Transfer 2009, 52:3645-3653.
9. Nasr M., Akhavan-Behabadi M.A., Marashi S.E. Performance evaluation of flattened tube in boiling heat transfer enhancement and its effect on pressure drop. Int. Comm. Heat Mass Transfer 2010, 37:430-436.
10. ANSYS, 2010. <>. http://www.ansys.com.
11. Kim N.H., Cho J.P., Youn B. Condensation of R-22 and R-410A in flat aluminum extruded tubes. Int. J. Refrig. 2003, 26:830-839.
12. Wilson E.E. A basis for rational design of heat transfer apparatus. Trans. ASME 1915, 37:47-70.
13. Kline S.J., McClintock F.A. The description of uncertainties in single sample experiments. Mech. Eng. 1953, 75:3-9.
14. Shah M.M. An improved and extended general correlation for heat transfer during condensation in plain tubes. Int. J. HVAC&R Res. 2009, 15(5):889-913.
15. Haraguchi H., Koyama S., Fujii T. Condensation of refrigerants HCFC22, HFC134a and HCFC123 in a horizontal smooth tube (2nd report, proposal of empirical expressions for local heat transfer coefficient). Trans. JSME 1994, 60(574):245-252.
16. Thome J.R., El Hajal J., Cavallini A. Condensation in horizontal tubes, part2: new heat transfer model based on flow regimes. Int. J. Heat Mass Transfer 2003, 46:3365-3387.
17. Cavallini A., Censi G., Del Col D., Doretti L., Longo G.A., Rossetto L. Condensation of halogenated refrigerants inside smooth tubes. Int. J. HVAC&R Res. 2002, 8(4):429-451.
18. Dobson M.K., Chato J.C. Condensation in smooth horizontal tubes. J. Heat Transfer 1998, 120:193-213.
19. Shah M.M. A general correlation for heat transfer during film condensation in tubes. Int. J. Heat Mass Transfer 1979, 22(4):547-556.
20. Taitel Y., Dukler A.E. A model for predicting flow regime transitions in horizontal and near horizontal gas-liquid flow. AIChE J. 1976, 22:47-55.
21. Friedel L. Improved pressure drop correlations for horizontal and vertical two-phase pipe flow. 3R Int. 1979, 18:485-492.
22. Muller-Steinhagen H., Heck K. A simple friction pressure drop correlation for two-phase flow in pipes. Chem. Eng. Processing 1986, 20:297-308.
23. Jung D.S., Radermacher R. Prediction of pressure drop during horizontal annular flow boiling of pure and mixed refrigerants. Int. J. Heat Mass Transfer 1989, 32(12):2435-2446.
24. Moreno Quiben J., Thome J.R. Flow pattern based two-phase frictional pressure drop model for horizontal tubes, Part II: New phenomenological model. Int. J. Heat Fluid Flow 2007, 28:1060-1072.