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驻波型热声制冷机回热器的结构优化

Keywords: 热声,回热器,驻波

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Abstract:

对驻波型热声制冷机的回热器进行了理论研究,通过对绝热情况下回热器内系统能流的分析,得到了以回热器位置和结构参数为变量并能够较为准确地预测出回热器时均温度差ΔTm的解析表达式.将所得解析表达式与实验结果、线性化结果进行比较,表明了结果的准确性.运用所得结果对板叠式回热器在声场中的位置、板叠厚度和板叠间距进行优化,得到了回热器最优位置xS=f-1(ΔTm),最优板叠间距2y0/δκ=3.3~3.4,最优板叠厚度为2l/δκ=0.7.

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