0
Research Papers: Evaporation, Boiling, and Condensation

Pool Boiling Heat Transfer Enhancement of Water Using Brazed Copper Microporous Coatings

[+] Author and Article Information
Seongchul Jun

Mechanical Engineering Department,
University of Texas at Dallas,
800 W. Campbell Road,
Richardson, TX 75080
e-mail: seongchul.jun@utdallas.edu

Hyoseong Wi

Mechanical Engineering Department,
University of Texas at Dallas,
800 W. Campbell Road,
Richardson, TX 75080
e-mail: wucwug001@gmail.com

Ajay Gurung

Mechanical and Aerospace Engineering Department,
University of Texas at Arlington,
500 W. First Street,
Arlington, TX 76019
e-mail: ajay.gurung@mavs.uta.edu

Miguel Amaya

Mechanical and Aerospace Engineering Department,
University of Texas at Arlington,
500 W. First Street,
Arlington, TX 76019
e-mail: mamaya@uta.edu

Seung M. You

Mechanical Engineering Department,
University of Texas at Dallas,
800 W. Campbell Road,
Richardson, TX 75080
e-mail: you@utdallas.edu

1Corresponding author.

Contributed by the Heat Transfer Division of ASME for publication in the JOURNAL OF HEAT TRANSFER. Manuscript received September 24, 2015; final manuscript received February 15, 2016; published online April 19, 2016. Assoc. Editor: Amy Fleischer.

J. Heat Transfer 138(7), 071502 (Apr 19, 2016) (9 pages) Paper No: HT-15-1619; doi: 10.1115/1.4032988 History: Received September 24, 2015; Revised February 15, 2016

A novel, high-temperature, thermally conductive, microporous coating (HTCMC) is developed by brazing copper particles onto a copper surface. This coating is more durable than many previous microporous coatings and also effectively creates re-entrant cavities by varying brazing conditions. A parametric study of coating thicknesses of 49–283 μm with an average particle size of ∼25 μm was conducted using the HTCMC coating to understand nucleate boiling heat transfer (NBHT) enhancement on porous surfaces. It was found that there are three porous coating regimes according to their thicknesses. The first regime is “microporous” in which both NBHT and critical heat flux (CHF) enhancements gradually grow as the coating thickness increases. The second regime is “microporous-to-porous transition” where NBHT is further enhanced at lower heat fluxes but decreases at higher heat fluxes for increasing thickness. CHF in this regime continues to increase as the coating thickness increases. The last regime is named “porous,” and both NBHT and CHF decrease as the coating thickness increases beyond that of the other two regimes. The maximum NBHT coefficient observed was ∼350,000 W/m2K at 96 μm thickness (microporous regime) and the maximum CHF observed was ∼2.1 MW/m2 at ∼225 μm thickness (porous regime).

FIGURES IN THIS ARTICLE
<>
Copyright © 2016 by ASME
Your Session has timed out. Please sign back in to continue.

References

Milton, R. M. , 1968, “ Heat Exchange System,” U.S. Patent No. 3,384,154.
O'Neill, P. S. , Gottzmann, C. F. , and Terobt, J. W. , 1971, “ Novel Heat Exchanger Increases Cascade Cycle Efficiency for Natural Gas Liquefaction,” Adv. Cryog. Eng., 17, pp. 420–437.
Gottzmann, C. F. , O'Neill, P. S. , and Minton, P. E. , 1973, “ High Efficiency Heat Exchangers,” Chem. Eng. Prog., 69(7), pp. 69–75.
Yilmaz, S. , Hwalek, J. , and Westwater, J. , 1980, “ Pool Boiling Heat Transfer Performance for Commercial Enhanced Tube Surfaces,” ASME Paper No. 80-HT-41.
Bergles, A. E. , and Chyu, M. C. , 1982, “ Characteristics of Nucleate Pool Boiling From Porous Metallic Coatings,” ASME J. Heat Transfer, 104(2), pp. 279–285. [CrossRef]
Fujii, M. , Nishiyama, E. , and Yamanaka, G. , 1979, “ Nucleate Pool Boiling Heat Transfer From Micro-Porous Heating Surface,” The 18th National Heat Transfer Conference, San Diego, CA, Aug. 6–8, pp. 45–51.
Lu, S. , and Chang, R. , 1987, “ Pool Boiling From a Surface With a Porous Layer,” AIChE J., 33(11) pp. 1813–1828. [CrossRef]
Hwang, G. S. , and Kaviany, M. , 2006, “ Critical Heat Flux in Thin, Uniform Particle Coatings,” Int. J. Heat Mass Transfer, 49(5–6), pp. 844–849. [CrossRef]
Liter, S. G. , and Kaviany, M. , 2001, “ Pool-Boiling CHF Enhancement by Modulated Porous-Layer Coating: Theory and Experiment,” Int. J. Heat Mass Transfer, 44(22) pp. 4287–4311. [CrossRef]
Li, C. , and Peterson, G. , 2010, “ Experimental Study of Enhanced Nucleate Boiling Heat Transfer on Uniform and Modulated Porous Structures,” Front. Heat Mass Transfer (FHMT), 1(2), p. 023007.
Li, C. H. , Li, T. , and Hodgins, P. , 2011, “ Comparison Study of Liquid Replenishing Impacts on Critical Heat Flux and Heat Transfer Coefficient of Nucleate Pool Boiling on Multiscale Modulated Porous Structures,” Int. J. Heat Mass Transfer, 54(15), pp. 3146–3155. [CrossRef]
Rioux, R. P. , Nolan, E. C. , and Li, C. H. , 2014, “ A Systematic Study of Pool Boiling Heat Transfer on Structured Porous Surfaces: From Nanoscale Through Microscale to Macroscale,” AIP Adv., 4(11) pp. 117–133. [CrossRef]
Scurlock, R. , 1995, “ Enhanced Boiling Heat Transfer Surfaces,” Cryogenics, 35(4), pp. 233–237. [CrossRef]
Chang, J. Y. , and You, S. M. , 1997, “ Enhanced Boiling Heat Transfer From Micro-Porous Surfaces, Effects of a Coating Composition and Method,” Int. J. Heat Mass Transfer, 40(18), pp. 4449–4460. [CrossRef]
Kim, J. H. , Gurung, A. , Amaya, M. , Kwark, S. M. , and You, S. M. , 2015, “ Microporous Coatings to Maximize Pool Boiling Heat Transfer of Saturated R-123 and Water,” ASME J. Heat Transfer, 137(8), p. 081501. [CrossRef]
Kwark, S. M. , Kumar, R. , Moreno, G. , Yoo, J. , and You, S. M. , 2010, “ Pool Boiling Characteristics of Low Concentration Nanofluids,” Int. J. Heat Mass Transfer, 53(5–6), pp. 972–981. [CrossRef]
Kline, S. J. , and McClintock, F. A. , 1953, “ Describing Uncertainties in Single-Sample Experiments,” Mech. Eng. 75(1), pp. 3–8.
Carey, V. P. , 1992, Liquid-Vapor Phase-Change Phenomena, Hemisphere, New York, p. 181.
Anderson, E. E. , 1994, Thermodynamics, PWS, Boston, MA, pp. 449–452.
Rohsenow, W. M. , 1952, “ A Method of Correlating Heat Transfer Data for Surface Boiling of Liquids,” Trans. ASME, 74, pp. 969–976.
Afgan, S. A. , Jovic, L. A. , Kovalev, S. A. , and Lenykov, V. A. , 1985, “ Boiling Heat Transfer From Surfaces With Porous Layers,” Int. J. Heat Mass Transfer, 28(2), pp. 415–422. [CrossRef]
McHale, J. P. , Garimella, S. V. , Fisher, T. S. , and Powell, G. A. , 2011, “ Pool Boiling Performance Comparison of Smooth and Sintered Copper Surfaces With and Without Carbon Nanotubes,” Nanoscale Microscale Thermophys. Eng., 15(3), pp. 133–150. [CrossRef]
Chang, J. Y. , and You, S. M. , 1997, “ Boiling Heat Transfer Phenomena From Microporous and Porous Surfaces in Saturated FC-72,” Int. J. Heat Mass Transfer, 40(18), pp. 4437–4447. [CrossRef]
Polezheav, Y. V. , and Kovalev, S. A. , 1990, “ Modeling Heat Transfer With Boiling on Porous Structures,” Therm. Eng., 37(12), pp. 5–9.

Figures

Grahic Jump Location
Fig. 1

Pool boiling curves of water with prior microporous coatings [15] and a plain copper surface [16]

Grahic Jump Location
Fig. 2

Schematic of the pool boiling chamber

Grahic Jump Location
Fig. 3

Schematic of test heater assembly

Grahic Jump Location
Fig. 4

Particle size distribution. Sizes were measured by image processing program of optical microscope images of copper powders.

Grahic Jump Location
Fig. 5

SEM of (a) TCMC [15] and (b) HTCMC

Grahic Jump Location
Fig. 6

Cross sections of (a) TCMC [15] and (b) HTCMC

Grahic Jump Location
Fig. 7

Pool boiling curves of water with different coating thicknesses. The highest heat flux of each curve represents CHF.

Grahic Jump Location
Fig. 8

Nucleate boiling images of plain copper and HTCMC (225 μm coating thickness) at different heat fluxes: (a) 1 kW/m2, (b) 15 kW/m2, (c) 100 kW/m2, and (d) 1000 kW/m2

Grahic Jump Location
Fig. 9

Pool boiling curves at different coating regimes: (a) microporous, (b) microporous-to-porous transition, and (c) porous regime

Grahic Jump Location
Fig. 10

CHF values with different coating thicknesses

Grahic Jump Location
Fig. 11

Boiling heat transfer coefficient at different coating regimes: (a) microporous, (b) microporous-to-porous transition, and (c) porous regime

Grahic Jump Location
Fig. 12

Variation of boiling heat transfer coefficient with coating thicknesses at different heat fluxes

Grahic Jump Location
Fig. 13

Comparison of boiling heat transfer coefficient of HTCMC with prior microporous coatings [15] in water

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In