Upscaling of thermoacoustic-Stirling duplex cryocoolers based on resonance tube coupling
Summary: 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...
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| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-09-01
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| Series: | iScience |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2589004225015019 |
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| Summary: | Summary: 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. |
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| ISSN: | 2589-0042 |