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Optimization of Operational and Constitutional Geometric Parameters for Thermoaoustic Energy Output

  • Oh, Seung Jin (Department of Nuclear & Energy Engineering, Jeju National University) ;
  • Shin, Sang Woong (Department of Nuclear & Energy Engineering, Jeju National University) ;
  • Chen, Kuan (Department of Mechanical Engineering, University of Utah) ;
  • Chun, Wongee (Department of Nuclear & Energy Engineering, Jeju National University)
  • Received : 2013.10.26
  • Accepted : 2014.01.14
  • Published : 2014.02.28

Abstract

The effects of geometric parameters (stack position, stack length, resonator tube length) and varying input power over acoustic energy output were investigated. The acoustic laser kit (Garret 2000) was used for the construction of TA lasers. A series of sound pressure level measurements in different orientations did not differ significantly confirming that the sound wave generated could be assumed as a spherical wave. An increase in acoustic pressure was recorded with respective increase in input power, stack and resonator tube lengths owing to their relative influence over heat transfer rate and critical temperature gradient across the stack.

Keywords

Acknowledgement

Supported by : National Research Foundation of Korea (NRF)

References

  1. Rayleigh. The explanation of certain acoustical phenomena. Nature 1878; 18: 319-21. https://doi.org/10.1038/018319a0
  2. Rott, N. Thermo acoustics. Advances in Applied Mechanics 1980; 20: 135-75. https://doi.org/10.1016/S0065-2156(08)70233-3
  3. Feldman Jr, K. T., 1968. Review of the literature on Sondhauss thermo acoustic phenomena. J Sound and Vibration 1968; 7(1): 71-82 https://doi.org/10.1016/0022-460X(68)90158-2
  4. Swift, G. Thermo acoustic Engines. J Acoustical Society of America 1968; 84: 1145-80.
  5. Lampe, R. Design and Testing of Rapid Prototyped Stacks for Thermo acoustic Applications. Proceedings of The National Conference on Undergraduate Research (NCUR) 2008:1-8.
  6. Kim, Y.T. & Kim, M.G., 2000. Optimum Positions of a Stack in a Thermo acoustic Heat Pump. J Korean Physical Society; 36(5): 279-86.
  7. Wheatley, J., Hofler, T., Migliori, A. An intrinsically irreversible thermo acoustic heatengine. J. Acoust. Soc. Am1983; 74(1): 153-70. https://doi.org/10.1121/1.389624
  8. Fahey, D.,1992.Thermo acoustic oscillations in cryogenics. Part3: avoiding and damping of oscillations. Cryogenics1992; 32(8): 703-06. https://doi.org/10.1016/0011-2275(92)90279-J
  9. Tijani, M.E.H., Zeegers, J.C.H., de Waele, a.T. a.M., 2002. The optimalstack spacing for thermo acoustic refrigeration. J Acoustical Society of America2002; 112(1): 128. https://doi.org/10.1121/1.1487842
  10. Garrett, S.L., & Backhaus, S. The Power of Sound. Sigma Xi, The Scientific Research Society2000; 88(6): 516-25.
  11. Kwon, Y. S. Study of Thermo acoustic Engines Operating at Frequencies between 2 KHz and 25 KHz. Ph.D. dissertations, Department of Physics,The University of Utah 1996.
  12. Garrett, S.L. Acoustic laser kit instructions. Applied Research Laboratory, Penn State University, State College, PA 2005.
  13. Kline, S.J., McClintock, F.A., 1953. Describing Uncertainties in Single-Sample Experiments, J. Mech. Eng 2005;75:3-8.
  14. Chen K, Oh SJ, Lee YJ, Chun W. Acoustic energy output and coupling effect of apair of thermo acoustic lasers. Int. J. Energy Research 2011; 36(4): 477-785.