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 Waves by the Stack Channel Number

스택의 채널 수에 다른 열음향파의 특성 비교 연구

  • Park, Sung-Seek (Department of Nuclear & Energy Engineering, Jeju National University) ;
  • Cheon, Won-Gi (Department of Nuclear & Energy Engineering, Jeju National University) ;
  • Kim, Nam-Jin (Department of Nuclear & Energy Engineering, Jeju National University)
  • Received : 2013.03.29
  • Accepted : 2013.07.16
  • Published : 2013.08.30
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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), onset time and the temperature gradient across the stack, with the Cell Per Square Inch(CPSI) of stack changed. 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. As a result, when the supply electric power was 25W, maximum SPLs of 104.1 dB, 109.4 dB and 112.8 dB were detected for the stacks of 200, 300 and 400 CPSI and their respective stack positions of 70mm, 60mm and 50mm from the closed end.

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References

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