Journal of the Korean Solar Energy Society (한국태양에너지학회 논문집)

The Korean Solar Energy Society (한국태양에너지학회)
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A Comparative Study on the Characteristics of Thermoacoustic Laser for Applying Solar Energy

태양열 적용을 위한 열음향 레이저의 특성 비교 연구

  • Park, Sung-Seek (Dept. of Nuclear & Energy Engineering, Jeju National University) ;
  • An, Eoung-Jin (Dept. of Nuclear & Energy Engineering, Jeju National University) ;
  • Oh, Seung-Jin (Dept. of Nuclear & Energy Engineering, Jeju National University) ;
  • Chun, Won-Gee (Dept. of Nuclear & Energy Engineering, Jeju National University) ;
  • Kim, Nam-Jin (Dept. of Nuclear & Energy Engineering, Jeju National University)
  • Received : 2012.03.06
  • Accepted : 2012.04.24
  • Published : 2012.04.30
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Abstract

The conversion of solar energy into acoustic waves is experimentally studied. Measurements were made on the Sound Pressure Level (SPL), frequency, onset time and the temperature gradient across the stack. A pyrex resonance tube is used with a honey-comb structure ceramic stack along with Ni-Cr and Cu wires. An AL1 acoustical analyzer was used to measure the SPL and frequency of acoustic waves whereas K-type thermocouples were hired to estimate temperature gradients. For a resonance tube of 100 mm, no acoustic waves were generated with a power input of 25W. By increasing its length to 200 mm, however, maximum SPLs of 96.4 dB, 106.3 dB and 112.8 dB were detected for the tubes of 10mm,20mm and 30mm in IDs and their respective stack positions of 70mm, 60mm and 50mm from the closed end.

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References

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  1. A Comparative Study on the Characteristics of Thermoacoustic Waves by the Stack Channel Number vol.33, pp.4, 2013, https://doi.org/10.7836/kses.2013.33.4.008