Construction and Performance Characterization of the Looped-Tube Travelling-Wave Thermoacoustic Engine with Ceramic Regenerator

Abdulrahman S. Abduljalil, Zhibin Yu, A.J. Jaworski, Lei Shi

Research output: Contribution to journalArticle

Abstract

In a travelling wave thermoacoustic device, the regenerator sandwiched between a pair of (hot and cold) heat exchangers constitutes the so-called thermoacoustic core, where the thermoacoustic energy conversion from heat to acoustic power takes place. The temperature gradient along the regenerator caused by the two heat exchangers excites and maintains the acoustic wave in the resonator. The devices are called travelling wave thermoacoustic systems because the phase angle difference between the pressure and velocity oscillation is close to zero in the regenerator. This paper presents the construction and testing of a thermoacoustic engine equipped with a ceramic regenerator, made from a ceramic material that is usually used as catalyst substrate in vehicles’ exhaust systems, with fine square channels (900 cells per square inch). The testing includes the onset temperature difference (minimum temperature difference required to start the acoustic oscillation in an engine), the acoustic power output, thermal efficiency and the temperature profile along the regenerator.
LanguageEnglish
Pages19-22
Number of pages4
JournalInternational Journal of Aerospace and Mechanical Engineering
Volume3
Issue number1
Publication statusPublished - 2009
Externally publishedYes

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Thermoacoustic engines
Traveling wave tubes
Regenerators
Thermoacoustics
Acoustics
Heat exchangers
Testing
Ceramic materials
Energy conversion
Thermal gradients
Temperature
Resonators
Acoustic waves
Engines
Catalysts
Substrates

Cite this

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Construction and Performance Characterization of the Looped-Tube Travelling-Wave Thermoacoustic Engine with Ceramic Regenerator. / Abduljalil, Abdulrahman S.; Yu, Zhibin; Jaworski, A.J.; Shi, Lei.

In: International Journal of Aerospace and Mechanical Engineering, Vol. 3, No. 1, 2009, p. 19-22.

Research output: Contribution to journalArticle

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AU - Shi, Lei

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