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Investigation of a piston mass impact on the pulse tube engine performance using analytical and experimental methods
Case Studies in Thermal Engineering ( IF 6.8 ) Pub Date : 2020-06-15 , DOI: 10.1016/j.csite.2020.100684
Alexander I. Dovgyallo , Svetlana O. Nekrasova , Evgeniya F. Bahvalova

In this research we have formulated a model using the mechanical-acoustical method and we have constructed an experimental apparatus to investigate the performance of the free piston pulse tube engine. The effects of the piston mass on the operation frequency, piston displacement amplitude, phase shift and the net power output have been analyzed. The values of piston mass of 52, 57, 62 g and heat supplied levels of 175, 190 W were applied. The experimental results have shown that the engine with a free piston mass of 57 g and a heat input of 175 W provides a maximum power output approximately at a theoretically obtained resonance frequency level of 12.1 Hz, while the maximum deviation in experimental frequencies was 7.2%. A pulse tube engine operation with a lighter piston requires a higher temperature to provide the net power output level of 12 W as well as at a resonance operation frequency.



中文翻译:

使用分析和实验方法研究活塞质量对脉冲管发动机性能的影响

在这项研究中,我们使用机械声学方法制定了一个模型,并构造了一个实验装置来研究自由活塞式脉冲管发动机的性能。分析了活塞质量对工作频率,活塞位移幅度,相移和净功率输出的影响。施加了52、57、62 g的活塞质量值和175、190 W的供热量值。实验结果表明,具有57 g自由活塞质量和175 W热输入的发动机在理论上获得的共振频率为12.1 Hz的情况下提供了最大功率输出,而实验频率的最大偏差为7.2% 。

更新日期:2020-06-15
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