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Construction and Performance Characterization of the Looped-Tube Travelling-Wave Thermoacoustic Engine with Ceramic Regenerator
Abstract:In a travelling wave thermoacoustic device, the regenerator sandwiched between a pair of (hot and cold) heat exchangers constitutes the so-called thermoacoustic core, where the thermoacoustic energy conversion from heat to acoustic power takes place. The temperature gradient along the regenerator caused by the two heat exchangers excites and maintains the acoustic wave in the resonator. The devices are called travelling wave thermoacoustic systems because the phase angle difference between the pressure and velocity oscillation is close to zero in the regenerator. This paper presents the construction and testing of a thermoacoustic engine equipped with a ceramic regenerator, made from a ceramic material that is usually used as catalyst substrate in vehicles- exhaust systems, with fine square channels (900 cells per square inch). The testing includes the onset temperature difference (minimum temperature difference required to start the acoustic oscillation in an engine), the acoustic power output, thermal efficiency and the temperature profile along the regenerator.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1063106Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 1962
 W.C Ward and G.W Swift, "Design environment for low-amplitude thermoacoustic engines," Journal of the Acoustical Society of America, Vol. 95 (6), pp. 3671-3672, 1994.
 G.W Swift, "Analysis and performance of a large thermoacoustic engine," Journal of the Acoustical Society of America, Vol. 92 (3), pp. 1551-1563, 1992.
 J. R. Olson and G. W. Swift, "A loaded thermoacoustic engine," Journal of the Acoustical Society of America , Vol. 98 (5), pp. 2690-2693.
 S. Zhou and Y. Matsubara, "Experimental research of thermoacoustic prime mover ," Cryogenics, Volume 38, Number 8, pp. 813-822, 1998
 G. W. Swift, ÔÇÿÔÇÿThermoacoustic engines,-- Journal of the Acoustical Society of America, Vol. 84, pp. 1145-1180, 1988.
 P. H. Ceperley, "Gain and efficiency of a short travelling wave heat engine," Journal of the Acoustical Society of America, Vol. 77, pp. 1239-1244, 1985.
 T. Yazaki, A. Iwata, T. Maekawa, and A. Tominaga, "Travelling Wave Thermoacoustic Engine in a Looped Tube," Physical Review Letters, Volume 81, Number 15: 3128-3131, 1998.
 S. Backhaus and G. W. Swift, "A thermoacoustic-Stirling heat engine: Detailed study," Journal of the Acoustical Society of America, Vol. 107, pp. 3148-3166, 2000.
 A. M. Fusco, W. C. Ward, and G. W. Swift, ÔÇÿÔÇÿTwo-sensor power measurements in lossy ducts,-- Journal of the Acoustical Society of America , Vol. 84, pp. 2229-2235, 1992.