Abstract
The characteristics of boiling and critical heat flux (CHF) behavior of nano-fluids with alumina and silver nano-particles suspended in de-ionized water (pure water) were studied with circular plate heaters in the present study. Enhancements of CHF in nano-fluids in the wide range of particle sizes and concentrations were compared with those in pure water. Also, the effects of the particle deposition on CHF enhancement were investigated. All experiments were performed at the atmospheric pressure condition. The results show that the measured boiling curves in nano-fluids were shifted to the right and CHF were significantly enhanced for different nano-particle sizes and concentrations. The CHF of nano-fluids was increased as the size of the nano-particles decreased. On the other hand, nano-particle concentration value showing the maximum CHF had a critical value. In each pool boiling experiment of nano-fluids, nano-particles were deposited on the heater surface. Assuming that this phenomenon caused the CHF enhancement, pool boiling experiments of pure water were carried out with these nano-particle deposited heaters. The results of these tests were similar to those of the test of the nano-fluids for the CHF enhancement. The main cause of CHF enhancement was found to be the change of the heater surface structure. In order to analyze boiling phenomena of pure water and Al2O3 nano-fluids, boiling process was visualized by using a high speed camera.
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References
Choi, U. S., Enhancing thermal conductivity of fluids with nano-particles, ASME, FED, 231 (1995), 99–105.
You, S. M., Kim, J. H. and Kim, K. H., Effect of nano-particles on critical heat flux of water in pool boiling heat transfer, Appl. Phys. Lett., 83 (2003), 3374–3376.
Vassallo, P., Kumar, R. and D’Amico, S., Pool boiling heat transfer experiments in silica-water nano-fluids, Int. J. Heat Mass Transfer, 47 (2004), 407–411.
Bang, I. C. and Chang, S. H., Boiling heat transfer performance and phenomena of Al2O3-water nano-fluids from a plain surface in a pool, Int. J. Heat Mass Transfer, 47 (2005), 2407–2419.
Kim, H., Kim, J. and Kim, M. H., Effect of nano-particles on CHF enhancement in pool boiling of nano-fluids, Int. J. Heat Mass Transfer, 49 (2006), 5070–5074.
Kim, H., Kim, J. and Kim, M. H., Experimental studies on CHF characteristics of nano-fluids at pool boiling, Int. J. Multiphase Flow, 33 (2007), 691–706.
Kang, J. H. and Lee, S. J.. Mechanical Response of Young Canes of Wind-Blown Kiwifruit Vines, J. Visualization, 11-3 (2008), 231–238.
Zhang, W., Kang, J. H. and Lee, S. J., Visualization of Saltating Sand Particle Movement near a Flat Ground Surface, J. Visualization, 10-1 (2008), 39–46.
Zuber, N., Hydrodynamic aspects of boiling heat transfer, Ph. D. thesis, UCLA, Los Angeles, CA (1959).
Incropera, F. P. and Dewitt, D. P., Fundamentals of Heat and Mass Transfer (Fifth edition), (2003), 666–672, John Wiley and Sons, New York.
Li, C. H., Wang. B. X. and Peng., X. F., Experimental investigation on boiling of nano-particle suspensions, Boiling Heat Transfer Conference, (Jamaica), (2003).
Das, S. K., Putra, N. and Roetzel, W., Pool boiling characteristics of nano-fluids, Int. J. Heat Mass Transfer, 46 (2003), 851–861.
Kim. J. H., You, S. M. and Pak, J. Y., Effects of heater size and working fluids on nucleate boiling heat transfer, Int. J. Heat Mass Transfer, 49 (2006), 122–131.
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Byeongnam Jo: He received his B.S. and M.S. (Eng) degree in Mechanical Engineering in 2007 from Ajou University. He worked at the National Research Laboratory as a research assistant for his master course at Ajou University. He performed several researches related to measurement of thermal properties, visualization, and boiling heat transfer. He has studied and worked at University of Minnesota since fall 2007. His research interests are bio-preservation, bio-heat transfer and visualization.
Pilsoo Jeon: He received his B.S. degree in Mechanical Engineering in 1998 from Kongju National University. He received his M.S. and Ph.D. degree in Mechanical Engineering in 2007 from Ajou University. He currently works in Thermofluid Systems Control Laboratory as a researcher at Ajou University. His research interests are thermophysical property measurement and electric device cooling.
Jaisuk Yoo: He received his B.S. and M.S. degree in Mechanical Engineering in 1980 from Seoul National University. He received his Ph.D. in Mechanical Engineering in 1984 from University of California, Berkeley. He currently works in Division of Mechanical Engineering, Ajou University as a professor since 1985. His research interests are nano fluidics, micro scale heat transfer and optical property measurement.
Hyun Jung Kim: He received his B.S. and M.S. degree in Mechanical Engineering in 1996 from Hanyang University. He received his Ph.D. in Mechanical Engineering in 2001 from Texas A&M University. He currently works in Division of Mechanical Engineering, Ajou University as an associate professor since 2003. His research interests are nano fluidics, optical property measurement, micro scale heat and mass transfer and measurement with Micro PIV, LIF.
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Jo, B., Jeon, P.S., Yoo, J. et al. Wide range parametric study for the pool boiling of nano-fluids with a circular plate heater. J Vis 12, 37–46 (2009). https://doi.org/10.1007/BF03181941
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DOI: https://doi.org/10.1007/BF03181941