Browse > Article
http://dx.doi.org/10.5516/NET.2011.43.3.195

EFFECT OF SOLUBLE ADDITIVES, BORIC ACID (H3BO3) AND SALT (NaCl), IN POOL BOILING HEAT TRANSFER  

Kwark, Sang-M. (Mechanical and Aerospace Engineering Department The University of Texas at Arlington)
Amaya, Miguel (Mechanical and Aerospace Engineering Department The University of Texas at Arlington)
Moon, Hye-Jin (Mechanical and Aerospace Engineering Department The University of Texas at Arlington)
You, Seung-M. (Mechanical and Aerospace Engineering Department The University of Texas at Arlington)
Publication Information
Nuclear Engineering and Technology / v.43, no.3, 2011 , pp. 195-204 More about this Journal
Abstract
The effects on pool boiling heat transfer of aqueous solutions of boric acid ($H_3BO_3$) and sodium chloride (NaCl) as working fluids have been studied. Borated and NaCl water were prepared by dissolving 0.5~5% volume concentration of boric acid and NaCl in distilled-deionized water. The pool boiling tests were conducted using $1{\times}1\;cm^2$ flat heaters at 1 atm. The critical heat flux (CHF) dramatically increased compared to boiling pure water. At the end of boiling tests it was observed that particles of boric acid and NaCl had deposited and formed a coating on the heater surface. The CHF enhancement and surface modification during boiling tests were very similar to those obtained from boiling with nanofluids. Additional experiments were carried out to investigate the reliability of the additives deposition in pure water. The boric acid and NaCl coatings disappeared after repeated boiling tests on the same surface due to the soluble nature of the coatings, thus CHF enhancement no longer existed. These results demonstrate that not only insoluble nanoparticles but also soluble salts can be deposited during boiling process and the deposited layer is solely responsible for significant CHF enhancement.
Keywords
Pool Boiling; Nanocoating; Critical Heat Flux; Soluble Additive;
Citations & Related Records

Times Cited By Web Of Science : 0  (Related Records In Web of Science)
Times Cited By SCOPUS : 0
연도 인용수 순위
  • Reference
1 K. Sefiane, "On the role of structural disjoining pressure and contact line pinning in critical heat flux enhancement during boiling of nanofluids," Applied Physics Letters, Vol. 89, 44106 (2006).   DOI
2 S.K. Das, G. Prakash Narayan, and A.K. Baby, "Survey of nucleate pool boiling of nanofluids: the effect of particle size relative to roughness," Journal of Nanoparticle Research, p. 1099 (2008).
3 S.M. Kwark, R. Kumar, G. Moreno, and S.M. You, "Transient characteristics of pool boiling heat transfer in nanofluids," Journal of Heat Transfer, In Press (2011).
4 S.M. Kwark, R. Kumar, G. Moreno, J. Yoo, and S.M. You, "Pool boiling characteristics of low concentration nanofluids," International Journal of Heat and Mass Transfer, Vol. 53, p. 972 (2010).   DOI
5 S.M. Kwark, G. Moreno, R. Kumar, H. Moon, and S.M. You, "Nanocoating characterization in pool boiling heat transfer of pure water," International Journal of Heat and Mass Transfer, Vol. 53, p. 4579 (2010).   DOI
6 E. Forrest, E. Williamson, J. Buongiorno, L. Hu, M. Rubner, and R. Cohen, "Augmentation of nucleate boiling heat transfer and critical heat flux using nanoparticle thin-film coatings," International Journal of Heat and Fluid Flow, Vol. 53, p. 58 (2010).
7 S. J. Kline and F.A. McClintock, "Describing uncertainties in single sample experiments," Mechanical Engineering, Vol. 75 (1), p. 3 (1953).
8 W.M. Rohsenow, "A method of correlating heat transfer data for surface boiling of liquids," Trans. ASME, Vol. 84, p. 969 (1962).
9 V.P. Carey, "Liquid-Vapor Phase Change Phenomena: An Introduction to the Thermophysics of Vaporization and Condensation Process in Heat Transfer Equipment," Taylor & Francis, Hebron, KY (1992).
10 N. Zuber, "Hydrodynamic aspects of boiling heat transfer," Physics and Mathematics, AEC Report No. AECU-44 (1959).
11 P. Vassallo, R. Kumar, and S. D'Amico, "Pool boiling heat transfer experiments in silica-water nano-fluids," International Journal of Heat and Mass Transfer, Vol. 47, p. 407 (2004).   DOI
12 J.P. Tu, N. Dinh, and T. Theofanous, "An experimental study of nanofluid boiling heat transfer," Proceedings of 6th International Symposium on Heat Transfer, Beijing, China (2004).
13 I.C. Bang, and S.H. Chang, "Boiling heat transfer performance and phenomena of $Al_2O_3$-water nano-fluids from a plain surface in a pool," International Journal of Heat and Mass Transfer, Vol. 48, p. 2407 (2005).   DOI
14 G. Moreno Jr, S.J. Oldenberg, and S.M. You, "Pool boiling heat transfer of alumina-water, zinc oxide-water and alumina-water+ethylene glycol nanofluid," Proceedings of HT2005, ASME Summer Heat Transfer Conference (2005).
15 D. Milanova and R. Kumar, "Role of ions in pool boiling heat transfer of pure and silica nanofluids," Applied Physics Letters, Vol. 87, 233107 (2005).   DOI
16 K. Park and D. Jung, "Enhancement of nucleate boiling heat transfer using carbon nanotubes," International Journal of Heat and Mass Transfer, Vol. 50, p. 4499 (2007).   DOI
17 S.J. Kim, I.C. Bang, J. Buongiorno, and L.W. Hu, "Surface wettability change during pool boiling of nanofluids and its effect on critical heat flux," International Journal of Heat and Mass Transfer, Vol. 50, p. 4105 (2007).   DOI
18 H. Kim and M.H. Kim, "Experimental study of the characteristics and mechanism of pool boiling CHF enhancement using nanofluids," Journal of Heat and Mass Transfer, Vol. 45 (7), p. 991 (2007).
19 D. Wen and Y. Ding, "Experimental investigation into the pool boiling heat transfer of aqueous based γ-alumina nanofluids," Journal of Nanoparticle Research, Vol. 7, p. 265 (2005).   DOI
20 Y.M. Yang and J.R. Maa, "Boiling of suspension of solid particles in water, pool boiling characteristics of nanofluids," International Journal of Heat and Mass Transfer, Vol. 27 (1), p.145 (1984).   DOI
21 S.K. Das, N. Putra, and W. Roetzel, "Pool boiling characteristics of nano-fluids," International Journal of Heat and Mass Transfer, Vol. 46, p. 851 (2003).   DOI
22 S.M. You, J.H. Kim, and K.H. Kim., "Effect of nanoparticles on critical heat flux of water in pool boiling heat transfer," Applied Physics Letters, Vol. 83 (16), p. 3374 (2003).   DOI