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Condensation Heat Transfer of R22, R407C, and R410A in Slit Fin-and-Tube Heat Exchanger  

Jeon, Chang-Duk (Department of Mechanical Engineering, ChungJu University)
Lee, Jin-Ho (Department of Mechanical Engineering, Yonsei University)
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International Journal of Air-Conditioning and Refrigeration / v.11, no.4, 2003 , pp. 188-198 More about this Journal
R410A and R407C are considered to be alternative refrigerants of R22 for the air-conditioners. An experimental study is carried out to investigate the effect of the change of mass flow rate on the characteristics of heat transfer and pressure drop in three row slit finned-tube heat exchanger for R407C, R410A and R22. R407C, a non-azeotropic refrigerant mixture, exhibited a quite different condensation phenomenon from those of R22 and R410A and its condensation heat transfer coefficient was much lower than that of R22 and R410A. On the other hand, the condensation heat transfer coefficient of R410A, near-azeotropic refrigerant mixture, was a little higher than that of R22. R410A also showed the lowest condensation pressure drop across the test section. For all refrigerants, the condensation heat transfer coefficient and pressure drop increase as the mass flux increases. The condensation heat transfer coefficient correlation proposed by Kedzierski shows the best agreement with the experimental data within $\pm$20%.
Alternative refrigerant; Condensation; Heat transfer coefficient; Pressure drop; R22; R407C; R410A;
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1 Molina, M. J. and Rowland, F. S., 1974, Stratosphere sink for chlorofluoromethanes: Chlorine atom catalyzed destruction of ozone, Nature, Vol. 249, pp.810-812
2 Chen, S., Judge, J. F., Groll, R. and Radermacher, R., 1994, Theoretical analysis of hydrocarbon refrigerant mixtures as a replacement for R-22 for residential uses, Proceedings of 1994 International Refrigeration Conference at Purdue University, West Lafayette, Indiana, USA, pp.225-230
3 Ryuzaburo, Y., Nobumo, D., Sigeharu, T., Isamu, T., Ebisu, T. and Torikoshi, K, 1994, In-tube heat transfer characteristics of refrigerant mixtures of HFC-32/134a and HFC32/125/134a, Proceedings of 1994 International Refrigeration Conference at Purdue, pp. 293-298
4 Choi, J. Y, 1999, Study on the prediction of pressure drop for condensation and evaporation of alternative refrigerants in microfin tubes, Yonsei University, Seoul, Korea
5 Cavallini, A, Doretti, L., Klammsteiner, N., Longo, G.A and Rossetto, L., 1995, Condensation of new refrigerant inside smooth and enhanced tube, Proceeding 19th International Refrigeration Conference at Hague, Vol.4, pp. 105-114
6 Traviss, D. P., Rohsenow, W. M. and Baron, A B., 1972, Force convection condensation inside tube: a heat transfer equation for condenser design, ASHRAE Transactions, Vol.79, pp.157-165
7 Jung, D. S., Bae, J. S., Lee, Y. H., Song, Y. J. and Lee, J. K., 1998, Predict pool boiling heat transfer coefficients of pure and mixed refrigerants, Report of Inha University
8 Sami, S. M. and Maltais, H., 2000, Experimental investigation of two phase flow condensation of alternatives to HCHC-22 inside enhanced surface tubing, Applied Thermal Engineering, Vol. 20, pp.1113-1126
9 Hwang, S. M., 1999, Condensation heat transfer coefficients of R22 alternative refrigerants on enhanced tubes, International Journal of KSME, Vol. 23, No.4, pp. 459-469
10 ASHRAE, 1993, Fundamental Handbook (SI).
11 Haraguchi, H., Koyama, S., Esaki, J. and Fujii, T., 1993, Condensation heat transfer of refrigerants HFCI34a, HCFC123 and HCFC22 in horizontal smooth tube and a horizontal micro fin tube, Proc., 30th National Symposia of Japan, Yokohama, pp. 343-345
12 Cavallini, A, Censi, G., Col, D. Del, Doretti, L., Longo, G. A and Rossetto, L., 2001, Experimental investigation on condensation heat transfer and pressure drop of new HFC refrigerants, International Journal of Refrigeration, Vol. 24, pp. 73-87
13 Ebisu, T., Kasai, D. and Torikoshi, K, 1996, A study thermal performance of air-cooled heat exchangers using alternative refrigerant, 33rd National Heat Transfer Symposium of Japan, Nigata, Vol. 2, pp.525-526
14 ARl, Participants Handbook: R-22 Alternative Refrigerants Evaluation Program (AREP), June 1993, ARI.
15 Kedzierski, M. A and Goncaves, J. M., 1997, Horizontal convective condensation of alternative refrigerant within a micro-fin tube, NISTIR 6095, US Dept. Commerce
16 Shah, M. M., 1979, A general correlation for heat transfer during film condensation inside pipes, Journal of Heat and Mass Transfer, Vol. 22, pp.547-556
17 Ebisu, T. and Torikoshi, K, 1995, Experimental studies on cross-flow heat exchanger performance using non-azeotropic refrigerant mixture, Proceedings of 19th International Congress of Refrigeration, 4a, pp. 163-170
18 Kim, M. H., Shin, J. S. and Kim, K J., 1997, An experimental study on the performance of a window system air-conditioner using R407C and R41OB, Korean Journal of Air-Conditioning and Refrigerating Engineering, Vol. 9, No.4, pp. 536-544
19 Wang, C. C. and Chiang, C. S., 1997, Two-phase heat transfer characteristics for R22/R407C in a 6.5mm smooth tube, Int. J. Heat and Fluid Flow 18, pp. 550-558
20 McLinden, M. O., Klein, S. A, Lemmon, E. W. and Peskin, A. P., 1998, Thermodynamic and transport properties of refrigerants and refrigerant mixtures database (REFPROP), Ver.6.01, NIST.
21 Kline, S.J. and McClintock, F. A., 1953, Describing uncertainties in single sample experiments, Mechanical Engineering, Vol. 75, pp.3-8