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Analysis of a Coaxial, Compact Thermoacoustic Heat-Pump

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An analytical approach to describe the behaviour of a compact thermoacoustic stack-based or regenerator-based heat-pump driven by two acoustic sources has been presented in a previous paper [Acta Acustica united with Acustica 97 (2011) 926–932]. It appears to be suitable for fitting adjustable parameters to achieve optimal heat transfer or temperature gradient, even COP. This model has been used to design such thermoacoustic refrigerators, which involve compactness and flexibility. The predicted characteristics are compared with some experimental results in this paper. Then performance of this small scale thermoacoustic device is compared with the one obtained with standing or travelling wave devices having similar stack/regenerator. Slightly higher efficiency than in the standing wave system is found, whereas the comparison with the coaxial travelling wave configuration gives slightly lower efficiency, yet at much smaller size.
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Document Type: Research Article

Publication date: November 1, 2013

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  • Acta Acustica united with Acustica, published together with the European Acoustics Association (EAA), is an international, peer-reviewed journal on acoustics. It publishes original articles on all subjects in the field of acoustics, such as general linear acoustics, nonlinear acoustics, macrosonics, flow acoustics, atmospheric sound, underwater sound, ultrasonics, physical acoustics, structural acoustics, noise control, active control, environmental noise, building acoustics, room acoustics, acoustic materials, acoustic signal processing, computational and numerical acoustics, hearing, audiology and psychoacoustics, speech, musical acoustics, electroacoustics, auditory quality of systems. It reports on original scientific research in acoustics and on engineering applications. The journal considers scientific papers, technical and applied papers, book reviews, short communications, doctoral thesis abstracts, etc. In irregular intervals also special issues and review articles are published.
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