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Al-Kayiem, Ali; Yu, Zhibin (2016)
Publisher: Elsevier
Languages: English
Types: Article
Subjects:
A new configuration (“a looped-tube with a bypass pipe”) was recently proposed for low temperature travelling wave thermoacoustic engines and a prototype using atmospheric air as the working gas achieved an onset temperature difference as low as 65 °C. However, no further research has been reported about this new configuration to reveal its advantages and disadvantages. This paper aims to analyse this type of engine through a comprehensive numerical research. An engine of this type having dimensions similar to the reported prototype was firstly modelled. The calculated results were then qualitatively compared with the reported experimental data, showing a good agreement. The working principle of the engine was demonstrated and analysed. The research results show that an engine with such a bypass configuration essentially operates on the same thermodynamic principle as other travelling wave thermoacoustic engines, differing only in the design of the acoustic resonator. Both extremely short regenerators and a near-travelling wave resonator minimise the engine’s acoustic losses, and thus significantly reduce its onset temperature difference. However, such short regenerators likely cause severe heat conduction losses, especially if the engine is applied to heat sources with higher temperatures. Furthermore, the acoustic power flowing back to the engine core is relatively low, while a large stream of acoustic power has to propagate within its resonator to maintain an acoustic resonance, potentially leading to low power density. The model was then applied to design an engine with a much longer regenerator and higher mean pressure to increase its power density. A thermoacoustic cooler was also added to the engine to utilise its acoustic power, allowing the evaluation of thermal efficiency. The pros and cons of the engine configuration are then discussed.
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    • [1] [2] [3] [4] [5] [6] [7] [8] [9] De Blok K. Low operating temperature integral thermo acoustic devices for solar cooling and waste heat recovery. Journal of the Acoustical Society of America 2008; 123(5): 3541-3541. And the presentation associated with this paper available on http://www.aster-thermoacoustics.com Ceperley PH. A pistonless Stirling engine-The traveling wave heat engine. The Journal of the Acoustical Society of America 1979; 66:1508.
    • Ceperley PH. Gain and efficiency of a short traveling wave heat engine. The Journal of the Acoustical Society of America 1985; 77:1239.
    • Yazaki T, Iwata A, Maekawa T, Tominaga A. Traveling wave thermoacoustic engine in a looped tube. Physical Review Letters 1998; 81(15):3128.
    • Backhaus S, Swift G. W. A thermoacoustic-Stirling heat engine: Detailed study. The Journal of the Acoustical Society of America 2000; 107, 3148.
    • Tijani MEH, Spoelstra S. A high performance thermoacoustic engine. J ApplPhys 2011; 110:093519.
    • De Blok CM. Thermoacoustic system Dutch patent. International application number PCT/NL98/00515; 1998.
    • De Blok Kees. Multi-stage traveling wave thermoacoustics in practice, The 19th International Conference on Sound and Vibration (ICSV19); July 8-12 2012. Vilnius, Lithuania.
    • De Blok, K. Novel 4-stage traveling wave thermoacoustic power generator. In: Paper FEDSM2010-ICNMM2010-30527 in proc ASME 3rd joint US-European fluids [24] [25] [26] [27] [28] [29] [31] [32] [33] [34] electricity generator. Sol Energy 2012; 86:2376-82.
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