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http://dx.doi.org/10.6110/KJACR.2012.24.9.685

Pool Boiling Heat Transfer Coefficients Up to Critical Heat flux on Thermoexcel-E Enhanced Surface  

Lee, Yo-Han (Department of Mechanical Engineering, Inha University)
Kang, Dong-Gyu (Graduate School, Inha University)
Jang, Cheol-Han (Graduate School, Inha University)
Jung, Dong-Soo (Department of Mechanical Engineering, Inha University)
Publication Information
Korean Journal of Air-Conditioning and Refrigeration Engineering / v.24, no.9, 2012 , pp. 685-692 More about this Journal
Abstract
In this work, nucleate pool boiling heat transfer coefficients(HTCs) of 5 refrigerants of different vapor pressure are measured on horizontal Thermoexcel-E square surface of 9.53 mm length. Tested refrigerants are R32, R22, R134a, R152a and R245fa. HTCs are taken from 10 $kW/m^2$ to critical heat fluxes for all refrigerant at $7^{\circ}C$. Wall and fluid temperatures are measured directly by thermocouples located underneath the test surface and in the liquid pool. Test results show that critical heat fluxes(CHFs) of Thermoexcel-E enhanced surface are greatly improved as compared to that of a plain surface in all tested refrigerants. CHFs of all refrigerants on the Thermoexcel-E surface are increased up to 100% as compared to that of the plain surface. The improvement of Thermoexcel-E surface in CHF, however, is lower than that of the low fin surface. HTCs on Thermoexcel-E surface increase with heat flux. But after certain heat flux, HTCs began to decrease due to the difficulty in bubble removal caused by the inherent complex nature of this surface. Therefore, at heat fluxes close to the critical one, sudden decrease in HTCs needs to be considered in thermal design with Thermoexcel-E surface.
Keywords
Nucleate pool boiling; Heat transfer coefficients; Critical heat flux; Thermoexcel-E enhanced surface;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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1 Webb, R. J., 1994, Principles of enhanced heat transfer, John Wiley and Sons. Inc., New York, pp. 311-372.
2 Benjamin, J. E. and Westwater, J. W., 1961, Bubble Growth in Nucleate Boiling of a Binary Mixture, Int. Development in Heat Transfer, ASME, New York, pp. 212-218.
3 Wolverine Tube, Turbo-B an improved evaporator tube, product bulletin; June 1985.
4 Fujie, K., Nakyama, H., Kuwahara, H., and Kakizaki, K., 1977, Heat transfer wall for boiling liquids, US Patent, 4,060,125, November, Vol. 29.
5 Webb, R. L. and Pais, C., 1992, Nucleate pool boiling data for five refrigerants on plain, integral-fin and enhanced tube geometries, Int. J. Heat Mass Transfer, Vol. 35, No. 8, pp. 1893-1904.   DOI
6 Chien, L. H. and Webb, R. L., 1998, A Parametric Study of Nucleate Boiling on Structured Surfaces, Part I: Effect of Tunnel Dimensions, Journal of Heat Transfer, Vol. 120, pp. 1042-1047.   DOI
7 Tatara, R. A. and Payvar, P., 2000, Pool boiling of pure R134a from a single Turbo-BII-HP tube, Int. J. Heat and Mass Transfer, Vol. 43, pp. 2233-2236.   DOI
8 Chen, Q., Windisch, R., and Hahne, E., 1989, Pool boiling Heat Transfer on Finned Tubes, Proc. Eurotherm Seminar No. 8, Advances in Pool Boiling Heat Transfer, Paderborn, FRG, May, pp. 11-12.
9 Hahne, E., Qiu-Rong, C., and Windisch, R., 1991, Pool boiling heat transfer on finned tubes-an experimental and theoretical study, Int. J. Heat Mass Transfer, Vol. 34, pp. 2071-2079.   DOI
10 Kim, J. H., T. H., Jung, D., and Kim, C. B., 1995, Pool boiling heat transfer characteristics of low-fin tubes in CFC11, HCFC123 and HCFC 141b, Transaction of KSME(B), Vol. 19, No. 9, pp. 2316-2327.
11 Park, J. S., Kim, J. G., Jung, D., and Kim, Y. I., 2001, Pool boiling heat transfer coefficients of new refrigerants on various enhanced tubes, Korea Journal of Air-Conditioning and Refrigeration Engineering, Vol. 13, No. 8, pp. 710-719.   과학기술학회마을
12 Nakayama, W., Daikoku, T., and Nakajima, T., 1982, Effects of pore diameters and system pressure on saturated pool nucleate boiling heat transfer from porous surface, Journal of Heat Transfer, Vol. 104, pp. 286-291.   DOI
13 Park, K. J., Jung, D., and Shim S. E., 2009, Nucleate boiling heat transfer coefficients of halogenated refrigerants up to critical heat fluxes, Proc. IMechE Part C : Journal Mechanical Engineering Science, Vol. 223, pp. 1415-1424.   DOI   ScienceOn
14 Park, K. J. and Jung, D., 2008, Pool boiling heat transfer coefficients up to critical heat flux, Korea Journal of Air-Conditioning and Refrigeration Engineering, Vol. 20, No. 9, pp. 571-580.   과학기술학회마을
15 Kline, S. J. and McClintock, F. A., 1953, Describing uncertainties in single-sample experiments, Mechanical Engineer, Vol. 75, pp. 3-8.
16 Lemmon, E. W., Huber, M. L., and McLinden, M. O., 2007, NIST Reference fluid thermodynamics and transport properties, REFPROP version 8.0.
17 Lee, Y. and Jung, D., 2011, Pool boiling heat transfer coefficients up to critical heat flux on Low-fin and Turbo-B surfaces, Korea Journal of Air-Conditioning and Refrigeration Engineering, Vol. 23, No. 3, pp. 179-187.   과학기술학회마을   DOI   ScienceOn
18 Webb, R. L. and Pais, C., 1992, Nucleate pool boiling data for five refrigerants on plain, integral-fin and enhanced tube geometries, Int. J. Heat Mass Transfer, Vol. 35, No. 8, pp. 1893-1904.   DOI