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Appl. Sci. 2017, 7(3), 303; doi:10.3390/app7030303

Measurement of Heat Flow Transmitted through a Stacked-Screen Regenerator of Thermoacoustic Engine

Department of Mechanical Systems and Design, Tohoku University, Sendai 980-8579, Japan
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Author to whom correspondence should be addressed.
Academic Editor: Artur J. Jaworski
Received: 4 February 2017 / Revised: 9 March 2017 / Accepted: 13 March 2017 / Published: 20 March 2017
(This article belongs to the Special Issue Heat Transfer Processes in Oscillatory Flow Conditions)
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Abstract

A stacked-screen regenerator is a key component in a thermoacoustic Stirling engine. Therefore, the choice of suitable mesh screens is important in the engine design. To verify the applicability of four empirical equations used in the field of thermoacoustic engines and Stirling engines, this report describes the measurements of heat flow rates transmitted through the stacked screen regenerator inserted in an experimental setup filled with pressurized Argon gas having mean pressure of 0.45 MPa. Results show that the empirical equations reproduce the measured heat flow rates to a mutually similar degree, although their derivation processes differ. Additionally, results suggest that two effective pore radii would be necessary to account for the viscous and thermal behaviors of the gas oscillating in the stacked-screen regenerators. View Full-Text
Keywords: regenerator; heat transfer; oscillatory flow regenerator; heat transfer; oscillatory flow
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Hsu, S.H.; Biwa, T. Measurement of Heat Flow Transmitted through a Stacked-Screen Regenerator of Thermoacoustic Engine. Appl. Sci. 2017, 7, 303.

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