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http://dx.doi.org/10.5855/ENERGY.2012.21.2.133

The Comparative Study on the Characteristics of Thermoacoustic Laser According to Shapes of Resonance Tube  

Kim, Nam-Jin (Department of Nuclear & Energy Engineering, Jeju National University)
An, Eoung-Jin (Department of Nuclear & Energy Engineering, Jeju National University)
Oh, Won-Jong (Korea Hydro & Nuclear Power CO., LTD.)
Oh, Seung-Jin (Department of Nuclear & Energy Engineering, Jeju National University)
Chun, Wongee (Department of Nuclear & Energy Engineering, Jeju National University)
Publication Information
Journal of Energy Engineering / v.21, no.2, 2012 , pp. 133-137 More about this Journal
Abstract
Among various clean energy technologies, the solar energy technology has been widely used in various fields such as photovoltaic power generation and solar water/space heating. These days, special attention is drawn on its conversion into acoustic energy along with waste heat as a means to promote clean energy utilization. This work was carried out to investigate the possibility of converting solar energy into acoustic waves, especially, its performance characteristics for a single resonance tube (20.2 mm in ID). Variations are made for the stack length and its position as well as power supply. For a resonance tube of 200mm, an average sound pressure of 114.5 dB was measured with a stack length of 25.6mm at 5cm from the closed end. When the power supply was increased to 35W, an average sound pressure of 117.29 dB was detected with a frequency of 500Hz. There was an increase in frequency, 630 Hz (115.7dB), with a shorter resonance tube of 150mm.
Keywords
Thermoacoustic waves; Stack; Resonance tube; Soundpressure(SPL); Frequency;
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