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首页> 外文期刊>International journal of air-conditioning and refrigeration >Effect of Stack Spacing on the Performance of Thermoacoustic Refrigerators Using Helium and Air as Working Substances
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Effect of Stack Spacing on the Performance of Thermoacoustic Refrigerators Using Helium and Air as Working Substances

机译：堆间距对热声冰箱性能使用氦气和空气作为工作物质的影响

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This paper deals with the design of thermoacoustic refrigerators using linear thermoacoustic theory. The refrigerator components are designed at 3% drive ratio by considering the practical limitations of providing sufficient spacing for attaching the loudspeaker to the resonator tube and accommodating instrumentation. The effects of spiral stack spacing in terms of thermal penetration depth on the theoretical performance of refrigerator using helium and air as working substances are discussed. The quarter-wavelength resonator designs with taper and divergent section terminated with hemispherical end are optimized with helium and air for better performance. Theoretical results are validated with DeltaEC software results and are in agreement with each other. Helium shows better performance compared to air but lacks power density. The DeltaEC predicts COP 0.514 at the cold heat exchanger temperature of -30°C with helium compared to air (COP 0.616 at 8.8°C) for the 50 W cooling power 100 mm diameter quarter-wavelength resonator designs.
机译：本文涉及使用线性热声理论的热声冰箱的设计。通过考虑提供足够的间隔的实际限制，冰箱组件设计为3％的驱动比以提供足够的间隔，以便将扬声器连接到谐振器管和容纳仪器。讨论了螺旋堆间距对热穿透深度对使用氦气和空气作为工作物质的理论性能的热渗透深度。用锥形和带有半球形端终止的四分之一波长谐振器设计用氦气和空气进行优化，以更好的性能。理论结果用Deltaec软件结果验证，彼此一致。与空气相比，氦显示出更好的性能，但缺乏功率密度。 DELTAEC在50W冷却功率100mm冷却功率的空气（COP 0.616）相比，氦气在-30°C的冷热交换机温度下预测COP 0.514，对于50W的冷却功率为100mm直径的四分之一波长谐振器设计。

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