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TECHNICAL PAPERS: Heat Transfer Enhancement

Influence of Flow Regime, Heat Flux, and Mass Flux on Electrohydrodynamically Enhanced Convective Boiling

[+] Author and Article Information
J. E. Bryan

Outokumpu Copper, Franklin, KY 42134

J. Seyed-Yagoobi

Department of Mechanical Engineering, Texas A&M University, College Station, TX 77843-3123

J. Heat Transfer 123(2), 355-367 (May 15, 2000) (13 pages) doi:10.1115/1.1316782 History: Received March 14, 1999; Revised May 15, 2000
Copyright © 2001 by ASME
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References

Salehi,  M., Ohadi,  M. M., and Dessiatoun,  S., 1995, “EHD-Enhanced Convective Boiling of R-134a in Grooved Channels-Application to Compact Heat Exchangers,” ASME J. Heat Transfer, 119, pp. 805–809.
Yabe,  A., Taketani,  T., Maki,  H., Takahshi,  K., and Nakadai,  Y., 1992, “Experimental Study of Electrohydrodynamically Enhanced Evaporator for Nonazeotropic Mixtures,” ASHRAE Trans., 98, No. 2, pp. 455–461.
Singh, A., Ohadi, M. M., Dessiatoun, S., and Salehi, M., 1995, “In-tube Boiling Enhancement of R-134a Utilizing the Electric Field Effect,” ASME/JSME Thermal Engineering Joint Conference, Maui, Hawaii, Vol. 2, pp. 215–223.
Norris, C., Cotton, J. S., Shoukri, M., Smith-Pollard, T., and Chang, J. S., 1997, “Inlet Quality Effects on Horizontal Convective Boiling Under the Electrohydrodynamic (EHD) Effect,” Proceedings of ESA-IEJ Joint Symposium on Electrostatics, Vol. 2, pp. 76–94.
Bryan, J. E., and Seyed-Yagoobi, J., 2000, “Electrohydrodynamically Enhanced Convective Boiling: Relationship between Electrohydrodynamic Pressure and Momentum Flux,” ASME J. Heat Transfer (in press).
Melcher, J. R., 1981, Continuum Electromechanics, MIT Press, Cambridge, Massachusetts.
Seyed-Yagoobi,  J., and Bryan,  J. E., 1999, “Enhancement of Heat Transfer and Mass Transport in Single-phase and Two-phase Flows with Electrohydrodynamics,” Adv. Heat Transfer, 33, pp. 95–186, Academic Press.
Jones,  T. B., 1977, “Bubble Dielectrophoresis,” J. Appl. Phys., 48, No. 4, pp. 1412–1417.
Bryan, J. E., 1998, “Fundamental Study of Electrohydrodynamically Enhanced Convective and Nucleate Boiling Heat Transfer,” Ph.D. Dissertation, Texas A&M University, College Station.
Kline,  S. J., and McClintock,  F. A., 1953, “Describing Uncertainties in Single Sample Experiments,” Mech. Eng. (Am. Soc. Mech. Eng.), 75, pp. 3–8.
Taylor, J. R., 1982, An Introduction to Error Analysis, University Science Books, Mill Valley, California.
Wattelet,  J. P., Chato,  J. C., Souza,  A. L., and Christoffersen,  B. R., 1994, “Evaporative Characteristics of R-12, R-134a, and a Mixture at Low Mass Fluxes,” ASHRAE Trans., 100, No. 1, pp. 603–615.
Kandlikar,  S. G., 1990, “A General Correlation for Saturated Two-Phase Flow Boiling Heat Transfer Inside Horizontal and Vertical Tubes,” ASME J. Heat Transfer, 112, pp. 219–228.
Wattelet, J. P., 1994, “Heat Transfer Flow Regimes of Refrigerants in a Horizontal-Tube Evaporator,” Ph.D. Dissertation, University of Illinois, Urbana-Champaign, Illinois.
Taitel,  Y., and Dukler,  A. E., 1976, “A Model for Predicting Flow Regime Transitions in Horizontal and Near Horizontal Gas-liquid Flow,” AIChE J., 22, pp. 47–55.
Seyed-Yagoobi,  J., Geppert,  C. A., and Geppert,  L. M., 1996, “Electrohydrodynamically Enhanced Heat Transfer in Pool Boiling,” ASME J. Heat Transfer, 118, pp. 233–237.
Geppert, C. A., 1994, “Electrohydrodynamically Enhanced Heat Transfer in Pool Boiling,” Technical Report, Department of Mechanical Engineering, Texas A&M University, College Station, Texas.
Ogata,  J., and Yabe,  A., 1993, “Augmentation of Boiling Heat Transfer by Utilizing the EHD Effect-EHD Behavior of Boiling Bubbles and Heat Transfer Characteristics,” Int. J. Heat Mass Transf., 36, No. 3, pp. 783–791.
Singh,  A., Ohadi,  M. M., Dessiatoun,  S., and Chu,  W., 1994, “In-tube Boiling Enhancement of R-123 Using the EHD Technique,” ASHRAE Trans., 100, No. 2, pp. 818–825.
Singh, A., 1995, “Electrohydrodynamic (EHD) Enhancement of In-Tube Boiling and Condensation of Alternative (Non-CFC) Refrigerants,” Ph.D. Dissertation, University of Maryland, College Park.
Salehi,  M., Ohadi,  M. M., and Dessiatoun,  S., 1996, “The Applicability of the EHD Technique for Convective Boiling of Refrigerant Blends—Experiments with R-404A,” ASHRAE Trans., 102, No. 1, pp. 839–844.

Figures

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Simple representations of electric body force density components with ε1 and ε2 representing the liquid vapor permittivity, respectively. (a) Coulomb force, (b) dielectrophoresis (type of polarization force), (c) and (d) are additional variations of the polarization force.
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Schematic of experimental apparatus
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Drawing of test section
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Comparison of experimental data to correlations by Kandlikar 13 and Wattelet 14 for three operating conditions
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Results with R-134a in a smooth tube for the 10-cm section at Tsat=4.9°C and G=99.9 kg/m2s: (a) the flow map, (b) average heat transfer coefficient data, and (c) local heat transfer coefficient data
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Results with R-134a in a smooth tube for second location (20 cm from inlet to test section) on the 30-cm section at Tsat=4.9°C and G=99.9 kg/m2s: (a) the flow map, (b) average heat transfer coefficient data, and (c) local heat transfer coefficient data
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Results for R-134a in a smooth tube for second location (37.5 cm from inlet to test section) on the 50-cm section at Tsat=4.9°C and G=99.9 kg/m2s: (a) the flow map, (b) average heat transfer coefficient data, and (c) local heat transfer coefficient data
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Mass flux comparison in intermittent flow regime for R-134a in a smooth tube at a Tsat of 25°C: (a) the flow map, (b) average heat transfer coefficient data, and (c) local heat transfer coefficient data
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Mass flux comparison from intermittent to annular flow regimes for R-134a in a smooth tube at a Tsat of 25°C: (a) the flow map, (b) average heat transfer coefficient data, and (c) local heat transfer coefficient data
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Influence of heat flux on EHD enhanced heat transfer for R-134a in a smooth tube at G=300.4 kg/m2s and Tsat=25.0°C: (a) second location (20 cm from inlet to test section) on the 30-cm section, (b) second location (37.5 cm from inlet to test section) on the 50-cm section
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Influence of heat flux on EHD enhanced heat transfer for R-134a in a smooth tube at G=101.3 kg/m2s and Tsat=25.1°C: (a) second location (20 cm from inlet to test section) on the 30-cm section, (b) second location (37.5 cm from inlet to test section) on the 50-cm section

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