Acoustic matching of a traveling-wave thermoacoustic electric generator
TLDR
In this paper, an effective approach for matching the acoustic impedances of the thermoacoustic engine and the linear alternators for maximizing the output electric power and thermal-to-electric efficiency was presented.About:
This article is published in Applied Thermal Engineering.The article was published on 2016-06-05 and is currently open access. It has received 36 citations till now. The article focuses on the topics: Thermoacoustics & Acoustic impedance.read more
Figures
Figure 2. Two output locations of traveling-wave thermoacoustic engines 
Table 1. Main geometric dimensions of traveling-wave thermoacoustic engine. 
Figure 8. Input acoustic power and output electric power vs. operating frequency. 
Figure 7. Equivalent displacements |x1| at (a) location A and (b) location B with respect to output acoustic impedance Za. 
Figure 13. Effect of load resistance on acoustoelectric efficiency of linear alternators. 
Table 2. Parameters of linear alternators.
Citations
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Journal ArticleDOI
Onset and damping characteristics of a closed two-phase thermoacoustic engine
Jingqi Tan,Jianjian Wei,Tao Jin +2 more
TL;DR: In this article, the onset and damping characteristics of a closed two-phase thermoacoustic engine are investigated, where a regenerator is inserted between the cold and hot heat exchangers to reduce the irreversible loss caused by heat transfer.
Journal ArticleDOI
Numerical study on a heat-driven piston-coupled multi-stage thermoacoustic-Stirling cooler
TL;DR: In this paper , a heat-driven multi-stage thermo-acoustic cooler is proposed to satisfy cooling requirements in the applications of natural gas liquefaction and high-temperature superconductivity.
Journal ArticleDOI
A numerical study of a looped-tube thermoacoustic engine with a single-stage for utilization of low-grade heat
TL;DR: In this paper, a single-stage thermoacoustic engine with a stub is used to suppress acoustic impedance disturbances and a systematic parametric study is carried out numerically with DeltaEC to examine their relations.
Journal ArticleDOI
Modeling, construction, and testing of a diaphragm thermoacoustic Stirling engine
TL;DR: The working principle of the thermoacoustic system is justified based on a new nonlinear lumped mechanical model and the existence of a stable limit cycle in the nonlinear dynamic response of the engine is predicted using the proposed mathematical framework.
Journal ArticleDOI
Development of a CFD model for simulation of a traveling-wave thermoacoustic engine using an impedance matching boundary condition
TL;DR: In this paper, a CFD simulation tool using an impedance matching boundary (IMB) condition has been developed to analyze the characterization of the flow field in a looped-tube traveling-wave thermoacoustic engine.
References
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Proceedings Article
Thermoacoustic engines
W. P. Arnott,R. Raspet,H.E. Bass +2 more
TL;DR: In this paper, an approximate analysis of energy flow and acoustical measurements of a thermoacoustic prime mover with arbitrary cross-sectional geometry is given. But this analysis is restricted to the case of TAEs with circular or parallel slit pore geometry.
Journal ArticleDOI
Traveling-wave thermoacoustic electric generator
TL;DR: In this paper, a traveling-wave thermo-acoustic electric generator was designed for use with an electrodynamic linear alternator, which can convert high-temperature heat to acoustic power with high efficiency.
Journal ArticleDOI
Design environment for low-amplitude thermoacoustic energy conversion (DeltaEC)
TL;DR: The Los Alamos thermoacoustics code, available at www.lanl.gov/thermoACoustics/, has undergone extensive revision this year, and a Python-based graphical user interface wrapped around that core provides improved usability as discussed by the authors.
Journal ArticleDOI
Travelling-wave thermoacoustic electricity generator using an ultra-compliant alternator for utilization of low-grade thermal energy
TL;DR: In this article, the authors proposed a traveling-wave thermoacoustic electricity generator, which employs a looped-tube travelling-wave engine to convert thermal energy into acoustic power, an ultra-compliant alternator within the engine loop to extract and convert the engine acoustic power to electricity, and an acoustic stub matching technique to match the alternator to the engine.
Journal ArticleDOI
Development of a 5 kW traveling-wave thermoacoustic electric generator
TL;DR: In this paper, a traveling-wave thermoacoustic electric generator is proposed, which consists of a multi-stage traveling wave thermo-acoustic heat engine and linear alternators, which is capable of converting thermal energy to acoustic power with advantage of heat source flexibility, reliability and efficiency.