Acoustic matching of a traveling-wave thermoacoustic electric generator
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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
Review on the conversion of thermoacoustic power into electricity
TL;DR: A review of the four main methods to convert the (thermo)acoustic power into electricity is provided in this article, focusing on possible configurations, operating characteristics, output performance, and analytical and numerical methods to study the devices.
Journal ArticleDOI
Multi-physics coupling in thermoacoustic devices: A review
TL;DR: In this paper, a comprehensive review of the multi-physics coupling effects, namely, thermal-acoustic coupling, acoustic-mechanical coupling and mechanical-electric coupling, inside thermoacoustic devices including thermo-acoustically-driven refrigerators, etc.
Journal ArticleDOI
Thermoacoustic Stirling power generation from LNG cold energy and low-temperature waste heat
TL;DR: In this article, the authors applied the thermoacoustic Stirling electric generator to recover LNG cold energy and waste heat simultaneously, which can help to improve the energy efficiency of LNG power generation systems, meanwhile, abundant low-grade waste heat can also be exploited from the exhaust gas of gas turbines.
Journal ArticleDOI
Numerical analysis on a four-stage looped thermoacoustic Stirling power generator for low temperature waste heat
TL;DR: In this paper, a four-stage looped thermoacoustic Stirling power generator for generating electricity from low temperature waste heat at 300°C is systematically studied, and the effects of the coupling position for the linear alternators and the regenerator position on the acoustic characteristics and performances of the power generation system are numerically investigated.
Journal ArticleDOI
Numerical study on a heat-driven piston-coupled multi-stage thermoacoustic-Stirling cooler
Jing-Yuan Xu,Jingyuan Xu,Jingyuan Xu,Jianying Hu,Ercang Luo,Jiangfeng Hu,Limin Zhang,Simone Hochgreb +7 more
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.
References
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Journal ArticleDOI
Investigation on a 1kW traveling-wave thermoacoustic electrical generator
TL;DR: In this paper, a traveling-wave thermoacoustic electrical generator was designed and tested, and a prototype of 1 kW traveling wave thermo-acoustic heat engine was presented.
Journal ArticleDOI
A traveling-wave thermoacoustic electric generator with a variable electric R-C load
TL;DR: In this paper, a traveling-wave thermoacoustic electric generator with a variable electric R-C load was constructed and experimentally studied, and the authors showed the importance of mechanical and electrical resonances to the overall performance of the system and found that the thermal-to-electric efficiency and the electric power were proportional to the pressure amplitude and the square of the piston of the linear alternator, respectively.
Journal ArticleDOI
Acoustic coupling between the loudspeaker and the resonator in a standing-wave thermoacoustic device
TL;DR: In this paper, a comparison between such a coupling and measurements obtained in a large-scale thermo-acoustic resonator constructed at the University of Manchester is made, and it is shown that a good agreement is obtained for small amplitudes and this progressively worsens as the amplitude is increased.
Journal ArticleDOI
An acoustically matched traveling-wave thermoacoustic generator achieving 750 W electric power
TL;DR: In this article, the acoustic impedance requirements of the traveling-wave thermoacoustic engine and linear alternators to reach an efficient and powerful operation state were studied quantitatively based on the decoupling method and theoretical analysis.
Journal ArticleDOI
A low-cost electricity generator for rural areas using a travelling-wave looped-tube thermoacoustic engine:
TL;DR: In this paper, a traveling-wave thermoacoustic engine with a configuration of a looped-tube resonator is designed and constructed to convert heat to acoustic power, and the results show that the approach is feasible in principle and it is possible to produce the electrical power levels in the order of 4-5 W with overall heat-to-electric efficiencies in order of 1 per cent.