Lumped parameter model for resonant frequency estimation of a thermoacoustic engine with gas-liquid coupling oscillation
作者： Ke Tang , Tian Lei , Xiao-gang Lin , Tao Jin , Yu Zhang
关键词: Thermoacoustics 、 Engineering 、 Mechanics 、 Argon 、 Volume (thermodynamics) 、 Coupling 、 Oscillation 、 Heat capacity ratio 、 Thermodynamics 、 Pulse (physics) 、 Refrigerator car
摘要: Gas-liquid coupling oscillation is a novel approach to reducing the resonant frequency and elevating pressure amplitude of thermoacoustic engine. If engine used drive low-frequency pulse tube refrigerators, matching between refrigerator plays an important role. Based on acoustic-electric analogy, lumped parameter model proposed estimate standing-wave with gas-liquid oscillation. Furthermore, simplified also developed reduce computation complexity. The dependence mean pressure, gas space volume, water column length computed analyzed. impact different working gases discussed. effectiveness models validated by comparing results experimental data system. An increase in can lead rise frequency, lower be achieved elongating liquid column. In comparison nitrogen argon, carbon dioxide realize due smaller specific heat ratio.
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