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气动式斯特林制冷机中膨胀机固有频率的试验研究

Infrared Technology(2009)

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Abstract
针对气动膨胀机中排出器固有频率对制冷机制冷性能的影响进行了试验研究。试验表明:随排出器固有频率的增大,压缩机共振频率减小;当制冷机充气压力为1.8MPa,压缩机共振频率与排出器固有频率比约为0.73~0.75时,制冷机性能最佳;同时,要使制冷机获得较高的效率和较好的制冷性能,不仅要使工作频率在压缩机共振点或共振点附近,而且要使制冷机运行频率与排出器共振频率之比为最佳值。
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Key words
expander,linear stirling-cooler,natural frequency
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