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Upscaling of thermoacoustic-Stirling duplex cryocoolers based on resonance tube coupling

Wei, Liping; Sun, Haojie; Ma, Hangyu; Yu, Guoyao; Zhu, Shunmin; Dai, Wei; Luo, Ercang

Upscaling of thermoacoustic-Stirling duplex cryocoolers based on resonance tube coupling Thumbnail


Authors

Liping Wei

Haojie Sun

Hangyu Ma

Guoyao Yu

Wei Dai

Ercang Luo



Abstract

To address the critical need for energy-efficient and environmentally sustainable cooling technologies, the thermoacoustic-Stirling duplex cryocooler (TSDC) offers a promising solution due to its high efficiency and versatile applications. However, the limited cooling capacity of individual TSDCs poses a significant challenge for practical implementation, necessitating system upscaling. To enhance power density and performance, we optimized a resonance tube-coupled TSDC by incorporating a coiled resonance tube and developing an active displacer modeling approach. A prototype with optimized dimensions was constructed and tested, demonstrating a linear relationship between cooling power at 130 K and input heating power, with a maximum cooling capacity of 380 W achieved at an exergy efficiency of 6.36%. Compared to prior studies, which reported no cooling power at 110 K, this represents a substantial advancement in TSDC scalability. Comparative analysis of experimental and theoretical results suggests that asymmetric flow at the compression junction adversely affects efficiency, providing valuable insights for further optimization.

Citation

Wei, L., Sun, H., Ma, H., Yu, G., Zhu, S., Dai, W., & Luo, E. (2025). Upscaling of thermoacoustic-Stirling duplex cryocoolers based on resonance tube coupling. iScience, 28(9), Article 113240. https://doi.org/10.1016/j.isci.2025.113240

Journal Article Type Article
Acceptance Date Jul 26, 2025
Online Publication Date Jul 30, 2025
Publication Date Sep 19, 2025
Deposit Date Aug 14, 2025
Publicly Available Date Aug 15, 2025
Journal iScience
Electronic ISSN 2589-0042
Publisher Cell Press
Peer Reviewed Peer Reviewed
Volume 28
Issue 9
Article Number 113240
DOI https://doi.org/10.1016/j.isci.2025.113240
Public URL https://durham-repository.worktribe.com/output/4427043

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