Scaling of thermoacoustic refrigerators

Y. Li*, J.C.H. Zeegers, H.J.M. ter Brake

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

1 Citation (Scopus)

Abstract

The possibility of scaling-down thermoacoustic refrigerators is theoretically investigated. Standing-wave systems are considered as well as traveling-wave. In the former case, a reference system is taken that consists of a resonator tube (50 cm) with a closed end and a PVC stack (length 5 cm). Helium is used at a mean pressure of 10 bar and an amplitude of 1 bar. The resulting operating frequency is 1 kHz. The variation of the performance of the refrigerator when scaled down in size is computed under the prerequisites that the temperature drop over the stack or the energy flux or its density are fixed. The analytical results show that there is a limitation in scaling-down a standing-wave thermoacoustic refrigerator due to heat conduction. Similar scaling trends are considered in traveling-wave refrigerators. The traveling-wave reference system consists of a feedback inertance tube of 0.567 m long, inside diameter 78 mm, a compliance volume of 2830cm3 and a 24 cm thermal buffer tube. The regenerator is sandwiched between two heat exchangers. The system is operated at 125 Hz and filled with 30 bar helium gas. Again, the thermal conductance forms a practical limitation in down-scaling.

Original languageEnglish
Title of host publicationAdvances in Cryogenic Engineering
Subtitle of host publicationTransactions of the Cryogenic Engineering Conference - CEC 2007
EditorsJ.G. Weisend
PublisherAIP
Pages18-25
Number of pages8
ISBN (Print)9780735405042
DOIs
Publication statusPublished - 28 Apr 2008
Externally publishedYes
Event2007 Cryogenic Engineering Conference and International Cryogenic Materials Conference, CEC/ICMC 2007 - Chattanooga Convention Center, Chattanooga, United States
Duration: 16 Jul 200720 Jul 2007
http://www.cec-icmc.org/cec-icmc-2007/

Publication series

NameAIP Conference Proceedings
PublisherAIP
Volume985
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference2007 Cryogenic Engineering Conference and International Cryogenic Materials Conference, CEC/ICMC 2007
Abbreviated titleCEC/ICMC
CountryUnited States
CityChattanooga
Period16/07/0720/07/07
Internet address

Keywords

  • Cooler
  • Refrigeration
  • Scaling
  • Thermoacoustics

Fingerprint

Dive into the research topics of 'Scaling of thermoacoustic refrigerators'. Together they form a unique fingerprint.

Cite this