Results 11 to 20 of about 2,216 (204)
Energy Conversion and ManagementWaste heat recovery is vital for greenhouse gas emissions reduction and meeting increasing power demands. Thermoacoustic engines present a promising solution. However, existing research predominantly focuses on single heating temperatures, which restricts their efficiency in harnessing heat sources with variable temperatures.
Yiwei Hu +7 more
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Exploration of a Model Thermoacoustic Turbogenerator with a Bidirectional Turbine
Polish Maritime Research, 2023 The utilisation of the thermal emissions of modern ship power plants requires the development and implementation of essentially new methods of using low-temperature waste heat.
Korobko Volodymyr +2 more
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Performance analysis of a two-stage travelling-wave thermo-acoustic engine using Artificial Neural Network [PDF]
MATEC Web of Conferences, 2021 Thermo-acoustic systems can convert thermal energy into acoustic waves and vice-versa. This conversion is due to the thermo-viscous interaction between the acoustically oscillating gas fluid within a porous medium, referred to as a regenerator, and the ...
Ngcukayitobi Miniyenkosi +3 more
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Complex eigenfrequency analysis of thermoacoustic heat engines [PDF]
The Journal of the Acoustical Society of America, 1991 Gas in a straight tube, open at the cool end and closed at the hot end, can be made unstable with respect to acoustic oscillation by placing a sufficiently large temperature gradient along the tube. The possibility of spontaneous oscillation exists when the externally applied temperature gradient is larger than the temperature gradient associated with ...
W. Pat Arnott +2 more
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Jurnal Teknologi, 2012 Kertas kerja ini memperkenalkan teknologi terbaru dalam kuasa bendalir iaitu termoakustik, fenomenon yang disebabkan oleh interaksi pepejal-bendalir. Secara umumnya, termoakustik boleh dibahagi kepada dua kategori. Kategori pertama ialah enjin haba, di mana kuasa akustik dapat dijana hasil daripada gelombang yang wujud disebabkan oleh perbezaan ...
N. Mohd. Ghazali, Farid Nasir Ani
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Using a side-branched volume to tune the acoustic field in a looped-tube travelling-wave thermoacoustic engine with a RC load [PDF]
, 2017 Travelling-wave thermoacoustic engine utilises a compact acoustic network to obtain a right time-phasing between the acoustic velocity and pressure oscillations within the regenerator to force gas parcels to experience a Stirling-like thermodynamic cycle.
Al-Kayiem, Ali, Yu, Zhibin
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Selection and experimental evaluation of low-cost porous materials for regenerator applications in thermoacoustic engines [PDF]
, 2010 This paper aims at evaluating three selected low-cost porous materials from the point of view of their suitability as regenerator materials in the design of thermoacoustic travelling wave engines.
Abduljalil, Abdulrahman S. +2 more
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High-frequency thermoacoustic-Stirling heat engine demonstration device [PDF]
Acoustics Research Letters Online, 2003 A small thermoacoustic-Stirling engine demonstration device that can produce sound in excess of 100 dB at 560 Hz has been constructed. The engine consists of a quarter wavelength acoustic resonator with a smaller diameter coaxial regenerator positioned toward the resonator’s closed end, thereby forming an acoustic feedback path around the regenerator ...
Kevin J. Bastyr, Robert M. Keolian
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Optimization of a Thermoacoustic Engine with a Complex Heat Transfer Exponent
Entropy, 2003 : Heat transfer between a thermoacoustic engine and its surrounding heat reservoirs can be out of phase with oscillating working gas temperature. The paper presents a generalized heat transfer model using a complex heat transfer exponent.
Lingen Chen +4 more
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Automotive Experiences, 2020 The thermoacoustic engine can be a device to convert waste heat energy in the engine car become useful energy such as for charging battery in car or Air conditioner of the car. This work can be done by experimentally and numerically.
Endang Dian Rokhmawati +7 more
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