✦ LIBER ✦

Theoretical calculation and experimental investigation on acoustic characteristics of a regenerator in thermoacoustic apparatus

✍ Scribed by X.J. Xie; Q. Li; Z.B. Yu

Publisher: John Wiley and Sons
Year: 2005
Tongue: English
Weight: 326 KB
Volume: 34
Category: Article
ISSN: 1099-2871
DOI: 10.1002/htj.20093

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✦ Synopsis

Abstract

An acoustic‐driven thermoacoustic device, which is used to investigate acoustic characteristics of a regenerator, was designed and manufactured. A model of the acoustic characteristics of the regenerator is discussed. The acoustic characteristics of the regenerator, such as acoustic impedance Ẑ~n~, reflection coefficient $\hat{\alpha}_{n}$, transmission loss TL, and phase angle $\hat{\theta}$ between incident and reflected wave at x=0, were obtained by processing the experimental results with the correlation‐spectra analysis (the auto‐ and cross‐spectra) methods theoretically. Comparisons of acoustic characteristics between two cases, A (regenerator) and B (regenerator and two additional heat exchangers), are discussed. Different heating power influence on acoustic characteristics is also investigated. The results obtained will be helpful in further investigations on the regenerator model. © 2005 Wiley Periodicals, Inc. Heat Trans Asian Res, 34(8): 539–546, 2005; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/htj.20093

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