Abstract
The thermoacoustic theory is applied to discussions on cooling power of a regenerator with narrow channels (ωτa<<1). Heat flux in the regenerator is shown to be a quadratic equation of the operating frequency ω, and there is a characteristic frequency ωQ. If ωQ is independent of ω, the cooling power is also a quadratic equation of ω, and it shows maximum at ω=ωQ. The cooling power depends on the temperature of the cold end partly through ωQ, which depends on material constants of the working fluid, the oscillating amplitudes, and the phase difference between pressure and displacement of the fluid. Discussions on ωQ and the maximum cooling power give a qualitative explanation of recent experimental results on 4K G-M cryocoolers only if ωQ is identified with experimentally obtained operating frequency corresponding to a maximum cooling power of 4K G-M cryocoolers.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: TEION KOGAKU (Journal of Cryogenics and Superconductivity Society of Japan)
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
