Abstract In this paper, a numerical study is carried out to assess the effect of heat exchangers plates inter-spacing on the performance of a thermoacoustic refrigerator (TAR). Considering that typically most of the heat loss occurs near the heat exchangers, a great emphasis will be placed on the space between the latter and the stack. Several geometric arrangements of heat exchangers plates inter-spacing were tested. The numerical method used is based on two-dimensional low Mach number model. This model assumes that the length of the assembled heat exchangers and stack is less than the wavelength. The results are in agreement with those provided by the DeltaEC software. It can also be observed that the larger the heat exchangers plates inter-spacing, the greater the cooling impact through the thermoacoustic effect.

中文翻译：

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换热器堵塞率对热声制冷机性能的影响

摘要 在本文中，进行了数值研究以评估换热器板间距对热声制冷机 (TAR) 性能的影响。考虑到通常大部分热量损失发生在热交换器附近，因此将重点放在后者与烟囱之间的空间上。测试了换热器板间距的几种几何布置。所使用的数值方法基于二维低马赫数模型。该模型假设组装的热交换器和堆叠的长度小于波长。结果与 DeltaEC 软件提供的结果一致。还可以观察到，热交换器板的间距越大，通过热声效应产生的冷却影响就越大。