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Dwi Astuti, Wijayanti
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Automotive Engineering Civil Engineering, Building, Construction & Architecture Electrical & Electronics Engineering Engineering Mechanical Engineering

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Numerical study of a thermoacoustic refrigerator with different stack geometries Murti, Prastowo; Dwi Astuti, Wijayanti; Febrinawarta, Burhan; Putra Pratama, Arief
Journal of Engineering and Applied Technology Vol. 6 No. 02 (2025): (August)
Publisher : Faculty of Engineering, Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jeatech.v6i02.85682

Abstract

This study examines the performance of a thermoacoustic refrigerator with various stack geometries as a potential eco-friendly alternative to conventional refrigeration systems that rely on chlorofluorocarbons (CFCs). Thermoacoustic refrigerators create a cooling effect using sound waves and environmentally friendly gases such as helium. The stack, a crucial component where energy conversion occurs, must be optimized to maximize cooling efficiency. However, no studies have previously investigated the impact of stack geometries under a uniform system configuration. Thus, this study aims to numerically evaluate how different stack geometries and materials affect the performance of thermoacoustic refrigerators while maintaining consistent system geometry and properties to ensure fair comparison. The research focuses on three types of stack geometries: parallel plate, ceramic honeycomb, and wire mesh screen. Using DeltaEC software, the performance of these stacks was analyzed with a constant hydraulic radius. The results show that the wire mesh screen stack provides the highest cooling power (330 W) and coefficient of performance (COP) of 0.81, outperforming the other geometries. These findings highlight the potential of optimized stack designs to improve the efficiency of thermoacoustic refrigerators, promoting their development as a sustainable cooling technology.
Co-Authors Febrinawarta, Burhan Prastowo Murti, Prastowo Putra Pratama, Arief