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Open-cell foams for thermoacoustic applications

Author

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  • Napolitano, Marialuisa
  • Romano, Rosario
  • Dragonetti, Raffaele

Abstract

In this work the thermoacoustic performance of a stack realized with open-cell foam is analysed. Starting from the elementary cell and its strut parameters the pore structure has been investigated to improve the power conversion inside a standing-wave thermoacoustic engine. The so called “Johnson-Champoux-Allard” model is used for this scope. Results are compared with those provided by ordinary stack realized with straight pores whose cross-sections have regular shapes (i.e. circular, parallel plate). Since thermoacoustic performance is strongly affected by stack properties (such as its length, its porosity, the geometry, the shape of its pores, the operating frequency as well as the type of material), an optimization procedure has been used to optimize the thermoacoustic engine performance for the same working conditions (thermal power provided by the heat exchangers and the related temperatures).

Suggested Citation

  • Napolitano, Marialuisa & Romano, Rosario & Dragonetti, Raffaele, 2017. "Open-cell foams for thermoacoustic applications," Energy, Elsevier, vol. 138(C), pages 147-156.
    • Handle: RePEc:eee:energy:v:138:y:2017:i:c:p:147-156
    DOI: 10.1016/j.energy.2017.07.042
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    References listed on IDEAS

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    Cited by:

    1. Wang, Kai & Dong, Huzi & Wang, Long & Zhao, Wei & Wang, Yanhai & Guo, Haijun & Zang, Jie & Fan, Long & Zhang, Xiaolei, 2023. "Temperature-induced micropore structure alteration of raw coal and its implications for optimizing the degassing temperature in pore characterization," Energy, Elsevier, vol. 268(C).
    2. Fabio Auriemma & Elio Di Giulio & Marialuisa Napolitano & Raffaele Dragonetti, 2020. "Porous Cores in Small Thermoacoustic Devices for Building Applications," Energies, MDPI, vol. 13(11), pages 1-19, June.

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