A method to optimize the regenerator parameters of a thermoacoustic engine

Abstract Thermoacoustic engines are devices suitable to convert heat into acoustic energy and viceversa. They are basically composed with a porous medium and two heat exchangers inserted into a resonator or looped tube. Depending on the phase shift between the sound pressure and the particle velocity of the working fluid, two categories of engines can be realized: standing-wave or travelling-wave devices. Thermodynamic performance of thermoacoustic engines strongly depends on the structural properties of the porous material and the geometric features of the device. In a previous work the authors developed a procedure for optimizing the properties described above to obtain, for a standing-wave device, the maximum acoustic power, given fixed boundary conditions. In this work, the above-mentioned procedure has been extended also for a traveling-wave engine.

[1]  Zhao Yang,et al.  Travelling-wave thermoacoustic high-temperature heat pump for industrial waste heat recovery , 2014 .

[2]  C. Wang,et al.  Dynamic Experimental Study of the Multi-Bypass Pulse Tube Refrigerator with Two-Bypass Tubes , 1998 .

[3]  Gaelle Poignand,et al.  Active Control of Thermoacoustic Amplification in a Thermo-Acousto-Electric Engine , 2014 .

[4]  Noureddine Atalla,et al.  Effect of the microstructure closed pore content on the acoustic behavior of polyurethane foams , 2011 .

[5]  G. Swift,et al.  A thermoacoustic-Stirling heat engine: detailed study , 2000, The Journal of the Acoustical Society of America.

[6]  A. Ravex,et al.  Development of Low Frequency Pulse Tube Refrigerators , 1998 .

[7]  Oleg A. Prokopyev,et al.  Thermoacoustic heat engine modeling and design optimization , 2011 .

[8]  W. Polifke,et al.  Optimizing thermoacoustic regenerators for maximum amplification of acoustic power. , 2014, The Journal of the Acoustical Society of America.

[9]  G. Swift,et al.  A thermoacoustic Stirling heat engine , 1999, Nature.

[10]  Ya-Ling He,et al.  Performance of solar powered thermoacoustic engine at different tilted angles , 2009 .

[11]  Huifang Kang,et al.  Optimizing hydraulic radius and acoustic field of the thermoacoustic engine , 2009 .

[12]  Raffaele Dragonetti,et al.  Modeling energy conversion in a tortuous stack for thermoacostic applications , 2016 .

[13]  J. Allard.  Propagation of Sound in Porous Media: Modelling Sound Absorbing Materials , 1994 .

[14]  Ercang Luo,et al.  Development of a 3 kW double-acting thermoacoustic Stirling electric generator , 2014 .

[15]  A. Tsirlin,et al.  Structural and thermodynamic properties of Fe1.12Te with multiple phase transitions , 2014 .

[16]  Scott Backhaus,et al.  Travelling-wave thermoacoustic electricity generator using an ultra-compliant alternator for utilization of low-grade thermal energy , 2012 .

[17]  Zhanghua Wu,et al.  A solar-powered traveling-wave thermoacoustic electricity generator , 2012 .

[18]  G. W. Swift,et al.  Acoustic streaming in pulse tube refrigerators: tapered pulse tubes , 1997 .

[19]  Peter H. Ceperley,et al.  A pistonless Stirling engine—The traveling wave heat engine , 1979 .

[20]  Gregory W. Swift,et al.  DESIGN ENVIRONMENT FOR LOW-AMPLITUDE THERMOACOUSTIC ENGINES , 1994 .