Work

Investigate the contribution of natural convection to the complex temperature distribution in a thermoacoustic core using experiments

Year: 2024

Type: conference-paper

Abstract: This study focuses on the influences of natural convection on the temperature distribution in a compact thermoacoustic coaxial heat pump. The behaviour of this device is quite consistent with results of Rott's linear theory of thermoacoustics, but early measurements reveal a non-uniformity of the temperature along the transverse dimension of the core, as well as nonlinear axial temperature profiles. To investigate the contribution of natural convection on these temperature distributions, a hanging system allowing the device to be rotated around 2 axes is implemented. For each configuration, temperature at various locations in the thermoacoustic core is recorded using an array of 3 by 5 thermocouples, and heat balance in the core is performed. All the experimental data are analysed to provide a better understanding of the heat flows in the device.

Source: NOISE-CON proceedings

DOI: 10.3397/in_2024_3251

Authors: Martin FONTBONNE, Islam RAMADAN, Gaëlle POIGNAND, Jean-Christophe VALIÈRE, Hélène BAILLIET

Institutions: Université de Poitiers, Centre National de la Recherche Scientifique, Le Mans Université, Laboratoire d'Acoustique de l'Université du Mans

Language: English

Topic: Advanced Thermodynamic Systems and Engines

Subfield: Mechanical Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W4403269484

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