Heat Transfer Enhancement by Ultrasound Pressure Waves in Liquid Water: A Cooling Method for New Electronic Components

Abstract:

The objective of this work is to study the increase of the convective heat transfer coefficient in the presence of ultrasound waves and, in particular, to find a relationship between the ultrasonic power and the effective pressure of water. The tests have focused on the heat exchange by natural convection, in single-phase conditions, at atmospheric pressure, between a cylinder, heated by means of the Joule effect, and distilled water, with and without the action of ultrasonic waves. The variables involved in the heat exchange have been varied within the range allowed by the experimental apparatus and the convective heat transfer coefficient has been maximized. The specific thermal flow has been chosen in a range compatible with applications in the field of electronics. For the first time the pressure of water at various ultrasonic power levels has been measured, in the vicinity of the cylindrical surface, thanks to the collaboration with the Naval Experimentation and Support Center (CSSN) of the Italian Navy in La Spezia, Italy.

• Periodical: Applied Mechanics and Materials (Volumes 556-562)
• Pages: 1968-1974
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.556-562.1968
• Online since: May 2014
• Authors: Carlo Bartoli*, F. Baffigi, Andrea Brunini
• Keywords: Free Convection, Heat Transfer Coefficient, Single-Phase, Sound Pressure Waves, Ultrasonic Waves

References

[1] R.M. Fand, The influence of acoustical vibrations on heat transfer by natural convection from a horizontal cylinder to water, Journal of Heat Transfer, Vol. 87, pp.309-310, (1965).

DOI: 10.1115/1.3689095

[2] K. W Li and J.D. Parker, Acoustical effects on free convective heat transfer from a horizontal Wire, Journal of Heat Transfer, Vol. 89, pp.277-278, (1967).

DOI: 10.1115/1.3614383

[3] K.A. Park and A.E. Bergles, Ultrasonic enhancement of saturated and subcooled pool boiling, International Journal of Heat and Mass transfer, Vol. 31, N°3, pp.664-667, (1998).

DOI: 10.1016/0017-9310(88)90049-x

[4] H. -Y. Kim, Y. i G. Kim, B. H. Kang, Enhancement of natural convection and pool boiling heat transfer via ultrasonic vibrations, International Journal of Heat and Mass Transfer, Vol. 47, pp.2831-2840, (2004).

DOI: 10.1016/j.ijheatmasstransfer.2003.11.033

[5] F. Baffigi, C. Bartoli, Heat Transfer Enhancement from a Circular Cylinder to Distilled Water by Ultrasonic Waves: Preliminary Remarks, Proceedings of the ExHFT-7, 7th World Conference on Experimental Heat Transfer, Fluid Mechanics and Thermodynamics, 28 June-03 July, Krakow, Poland, (2009).

DOI: 10.1115/ihtc14-22773

[6] F. Baffigi, C. Bartoli Heat transfer enhancement from a circular cylinder to distilled water by ultrasonic waves in subcooled boiling conditions, ITP09, Interdisciplinary Transport Phenomena VI: Fluid, Thermal; Biological, Materials and Space Sciences, Volterra, Italy, October 4-9, (2009).

DOI: 10.1115/ihtc14-22773

[7] F. Baffigi, C. Bartoli, Heat Transfer Enhancement from a Circular Cylinder to Distilled Water by Ultrasonic Waves at Different Subcooling Degrees, IHTC14, International Heat Transfer Conference, Washington DC, USA, 8-13 August, (2010).

DOI: 10.1115/ihtc14-22773

[8] F. Baffigi, C. Bartoli, Effects of Ultrasounds on the Heat Transfer Enhancement from a Circular Cylinder to Distilled Water in Subcooled Boiling, Journal of Thermal Science and Engineering Applications, Vol. 3, Issue 1, (2011).

DOI: 10.1115/1.4003510

[9] F. Baffigi, C. Bartoli, Effects of Ultrasonic Waves on the Heat Transfer Enhancement in Subcooled Boiling, Experimental Thermal and Fluid Science, Vol. 35, Issue 3, (2011).

DOI: 10.1016/j.expthermflusci.2010.11.002

[10] F. Baffigi, C. Bartoli, Influence of the Ultrasounds on the Heat Transfer in Single Phase Free Convection and in Saturated Pool Boiling, Experimental Thermal and Fluid Science, Vol. 36, (2012).

DOI: 10.1016/j.expthermflusci.2011.07.012

[11] C. Bartoli, F. Baffigi, Use of Ultrasonic Waves In Subcooling Boiling, Applied Thermal Engineering Vol. 47, pp.95-110, (2012).

DOI: 10.1016/j.applthermaleng.2012.02.009

[12] F. Baffigi and C. Bartoli, Heat Transfer Enhancement Using Ultrasonic Waves in Presence of Liquid: A Basic Research for Cooling Electronic, Applied Mechanics and Materials, Vol. 464, pp.163-170, (2014).

DOI: 10.4028/www.scientific.net/amm.464.163

[12] J. L. Ayala, A. Sridhar, D. Cuesta, Thermal Modeling and Analysis of 3D Multi-Processor Chip, Integration, the VLSI Journal, Vol. 43, pp.327-341, (2010).

DOI: 10.1016/j.vlsi.2010.06.002

[13] P. G. Del Valle, D. Atienza, Emulation-Based Transient Thermal Modeling of 2D/3D Systems-On-Chip with Active Cooling, Microelectronics Journal, Volume 42, Issue 4, April 2011, Pages 564-571, (2011).

DOI: 10.1016/j.mejo.2010.08.003

[14] R. J. Moffat, Describing uncertainties in experimental results, Experimental Thermal and Fluid Science Vol. 1, pp.3-17, (1988).

DOI: 10.1016/0894-1777(88)90043-x