Performance evaluation of helium-based binary gas mixtures in standing-wave thermoacoustic electricity generator
This study investigates the performance of helium-based binary gas mixtures in a standing-wave thermoacoustic electricity generator (SWTAEG). The experimental setup employs a quarter-wavelength straight resonator coupled with a loudspeaker acting as a linear alternator. Four binary gas mixtures—heli...
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| Language: | English |
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Elsevier
2025-09-01
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| Series: | Results in Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2590123025024041 |
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| author | Ikhsan Setiawan Prastowo Murti Irna Farikhah Agung Bambang Setio Utomo |
| author_facet | Ikhsan Setiawan Prastowo Murti Irna Farikhah Agung Bambang Setio Utomo |
| author_sort | Ikhsan Setiawan |
| collection | DOAJ |
| description | This study investigates the performance of helium-based binary gas mixtures in a standing-wave thermoacoustic electricity generator (SWTAEG). The experimental setup employs a quarter-wavelength straight resonator coupled with a loudspeaker acting as a linear alternator. Four binary gas mixtures—helium-argon (He-Ar), helium-nitrogen (He-N2), helium-oxygen (He-O2), and helium-carbon dioxide (He-CO2)—were tested at varying helium molar fractions (0.0 to 1.0) under a constant working pressure of 300 kPa. Key performance metrics such as onset temperature difference ΔTonset), resonance frequency, pressure amplitude, and electrical power output were evaluated. Results show that each gas mixture exhibits a distinct optimal helium fraction where both ΔTonset is minimized and power output is maximized. Notably, the He–CO2 mixture with 0.4 helium fraction achieved the best performance, generating 1.6 W of power at the lowest ΔTonset of 229 °C. Analytical models of ΔTonset were also validated against experimental data. These findings highlight the significant influence of thermophysical properties—particularly Prandtl number and specific heat ratio—on the thermoacoustic conversion process, and demonstrate the potential of binary mixtures for optimizing energy efficiency in low-grade heat-to-electricity applications. |
| format | Article |
| id | doaj-art-a77c24238f5a47d59d3426bce5e12e09 |
| institution | Matheson Library |
| issn | 2590-1230 |
| language | English |
| publishDate | 2025-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Engineering |
| spelling | doaj-art-a77c24238f5a47d59d3426bce5e12e092025-07-23T05:24:57ZengElsevierResults in Engineering2590-12302025-09-0127106332Performance evaluation of helium-based binary gas mixtures in standing-wave thermoacoustic electricity generatorIkhsan Setiawan0Prastowo Murti1Irna Farikhah2Agung Bambang Setio Utomo3Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Gadjah Mada, Yogyakarta 55281, Indonesia; Corresponding author.Department of Mechanical and Industrial Engineering, Faculty of Engineering, Universitas Gadjah Mada, Yogyakarta 55281, IndonesiaDepartment of Mechanical Engineering, Faculty of Engineering and Informatics, Universitas PGRI Semarang, Semarang 50232 IndonesiaDepartment of Physics, Faculty of Mathematics and Natural Sciences, Universitas Gadjah Mada, Yogyakarta 55281, IndonesiaThis study investigates the performance of helium-based binary gas mixtures in a standing-wave thermoacoustic electricity generator (SWTAEG). The experimental setup employs a quarter-wavelength straight resonator coupled with a loudspeaker acting as a linear alternator. Four binary gas mixtures—helium-argon (He-Ar), helium-nitrogen (He-N2), helium-oxygen (He-O2), and helium-carbon dioxide (He-CO2)—were tested at varying helium molar fractions (0.0 to 1.0) under a constant working pressure of 300 kPa. Key performance metrics such as onset temperature difference ΔTonset), resonance frequency, pressure amplitude, and electrical power output were evaluated. Results show that each gas mixture exhibits a distinct optimal helium fraction where both ΔTonset is minimized and power output is maximized. Notably, the He–CO2 mixture with 0.4 helium fraction achieved the best performance, generating 1.6 W of power at the lowest ΔTonset of 229 °C. Analytical models of ΔTonset were also validated against experimental data. These findings highlight the significant influence of thermophysical properties—particularly Prandtl number and specific heat ratio—on the thermoacoustic conversion process, and demonstrate the potential of binary mixtures for optimizing energy efficiency in low-grade heat-to-electricity applications.http://www.sciencedirect.com/science/article/pii/S2590123025024041ThermoacousticElectricity generatorStanding waveBinary gas mixturesEnergy conversion |
| spellingShingle | Ikhsan Setiawan Prastowo Murti Irna Farikhah Agung Bambang Setio Utomo Performance evaluation of helium-based binary gas mixtures in standing-wave thermoacoustic electricity generator Results in Engineering Thermoacoustic Electricity generator Standing wave Binary gas mixtures Energy conversion |
| title | Performance evaluation of helium-based binary gas mixtures in standing-wave thermoacoustic electricity generator |
| title_full | Performance evaluation of helium-based binary gas mixtures in standing-wave thermoacoustic electricity generator |
| title_fullStr | Performance evaluation of helium-based binary gas mixtures in standing-wave thermoacoustic electricity generator |
| title_full_unstemmed | Performance evaluation of helium-based binary gas mixtures in standing-wave thermoacoustic electricity generator |
| title_short | Performance evaluation of helium-based binary gas mixtures in standing-wave thermoacoustic electricity generator |
| title_sort | performance evaluation of helium based binary gas mixtures in standing wave thermoacoustic electricity generator |
| topic | Thermoacoustic Electricity generator Standing wave Binary gas mixtures Energy conversion |
| url | http://www.sciencedirect.com/science/article/pii/S2590123025024041 |
| work_keys_str_mv | AT ikhsansetiawan performanceevaluationofheliumbasedbinarygasmixturesinstandingwavethermoacousticelectricitygenerator AT prastowomurti performanceevaluationofheliumbasedbinarygasmixturesinstandingwavethermoacousticelectricitygenerator AT irnafarikhah performanceevaluationofheliumbasedbinarygasmixturesinstandingwavethermoacousticelectricitygenerator AT agungbambangsetioutomo performanceevaluationofheliumbasedbinarygasmixturesinstandingwavethermoacousticelectricitygenerator |