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Electrohydrodynamic(ehd) enhancement of boiling heat transfer with a lo-fin tube

Abstract

The effect of D. C electric field on nucleate boiling heat transfer for refrigerants of R-11, HCFC-123 and FC-72 was investigated experimentally by using a single lo-fin tube shell-and-tube heat exchanger. The lo-fin tube which brought two times increase in the heat transfer area provided about 150% of boiling heat transfer enhancement compared to that of smooth surface. This experimental study has revealed that the electrical charge relaxation time was an important parameter for the boiling heat transfer enhancement under electric field. Boiling heat transfer enhancement was obtained up to 40% for R-11 which had moderate relaxation time of 1.3s. However remarkable boiling heat transfer enhancement has been obtained up to three fold increase(300%) for HCFC-123 which has the electrical charge relaxation time of 0.89 x 10-3s. For FC-72 having longer relaxation time than the bubble detachment one, no appreciable effect on the nucleate boiling heat transfer was observed.

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Reference

  1. Basu, D. K., 1973, “Effect of Electric Fields on Boiling Hysteresis in Carbon Tetrachloride,”Int. J. Heat Mass Transfer, Vol. 16, pp. 1322–1424.

  2. Cooper, P., 1990, “EHD Enhancement of Nucleate Boiling,”ASME, J. Heat Transfer, Vol. 112, pp. 458–464.

  3. Cooper, P., 1986,Electrically Enhanced Heat Transfer in the Shell and Tube Heat Exchanger, Ph. D. Thesis, University of London.

  4. Judd, R. L. and Hwang, K. S., 1976, “A Comprehensive Model for Nucleate Pool Boiling Heat Transfer Including Microlayer Evaporation”,J. Heat Transfer, Vol. C98, pp. 623–629.

  5. Karayiannis, T. H., Al-Dadah, R. K., James, R. W. and Allen, P. H. G., 1993, “Electrohydrodynamic Boiling Heat Transfer Enhancement in Heat Exchangers” ASME paper #93-WA/ HT-35.

  6. Kawahira, H., Kubo, Y., Yokoyama, T., and Ogata, J., 1990, “The Effect of an Electric Field on Boiling Heat Transfer of Refrigerant-11 ; Boiling on a Single Tube,”IEEE Trans, on Industry Application, Vol. 26, pp. 359–365.

  7. Marto, P. J. and Lepere, V. J., 1982, “Pool Boiling Heat Transfer from Enhanced Surfaces to Dielectric Fluids”,J. Heat Transfer, Vol. 104, pp. 292–299.

  8. Mostinski, I. L., 1963, “Application of Law of Corresponding States to Calculation of Heat Transfer and Critical Heat Flux,”Teploenegetica, Vol.4 pp. 66–71, English Abstract, British Chemical Engineering, Vol. 8, p. 580.

  9. Oh, S., and Kwak, H., 1996a, “A Study of Bubble Behavior and Boiling Heat Transfer Enhancement under Electric Field,” in Thermal Science of Advanced Steam Generators/Heat ExchangersASME, NE-Vol. 19 ed. by Y. A. Hassan and S. Beus. pp. 1–14. Also will be published in theJounal of Heat Transfer Engineering, 2000.

  10. Oh, S. and Kwak, H., 1996b, “Electrohydro Dymnanic (EHD) Enhancement on Boiling Heat Transfer of R-113 + wt 4% Ethanol”,in Proceedings of the Third KSME-JSME Thermal Engineering Conference, Vol. 1, pp. 407–414.

  11. Ohadi, M. M., Papar, R.A., Ng, T. L., Faani, M.A., and Radermacher, R., 1992, “EHD Enhancement of Shell-side Boiling Heat Transfer Coefficients of R-123/oil Mixture,” ASHRAE Trans, Symp., pp. 427–434, (BA-92-5-1).

  12. Ogata, J., lwafuji Y., Shimada, Y. and Yamazaki, T., 1992, “Boiling Heat Transfer Enhancement in Tube-Bundle Evaporators Utilizing Electric Field Effects”,ASHRAE Trans. Symposia, pp. 435–444, 1992(BA-92-5-2).

  13. Singh, A., Kumar, A., Dessiatoun, S., Faani, M. A., Ohadi, M. M., and Ansari, A. I., 1993, “Compound EHD-enhanced Pool Boiling of R-123 in a Liquid-to-Refrigerant Heat Exchanger,”ASME Paper #93-WA/HT-40.

  14. Snyder, T. J., Schneider, J. B., and Chung, J. N., 1996, “A Second Look at Electrokinetic Phenomena in Boiling,”J. Appl. Phys. Vol. 79, pp. 6755–6760.

  15. Stephan, K. and Abdelsalam, M., 1980, “Heat Transfer Correlations for Natural Convetive Boiling,”Int. J. Heat and Mass Transfer, Vol. 23, pp. 73–87.

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Author information

Correspondence to Sang Houn Han or Min-Kyun Na or Si-Doek Oh or Ho-Young Kwak.

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Han, S.H., Na, M., Oh, S. et al. Electrohydrodynamic(ehd) enhancement of boiling heat transfer with a lo-fin tube. KSME International Journal 13, 376–385 (1999). https://doi.org/10.1007/BF02939326

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Key Words

  • EHD
  • Nucleate Boiling
  • Lo-Fin Tube