Full Content is available to subscribers

Subscribe/Learn More  >

Numerical Modeling of a Micro-Scale Stirling Cooler

[+] Author Affiliations
Dongzhi Guo, Alan J. H. McGaughey, Jinsheng Gao, Gary K. Fedder, Minyoung Lee, Shi-Chune Yao

Carnegie Mellon University, Pittsburgh, PA

Paper No. HT2012-58361, pp. 331-337; 7 pages
  • ASME 2012 Heat Transfer Summer Conference collocated with the ASME 2012 Fluids Engineering Division Summer Meeting and the ASME 2012 10th International Conference on Nanochannels, Microchannels, and Minichannels
  • Volume 1: Heat Transfer in Energy Systems; Theory and Fundamental Research; Aerospace Heat Transfer; Gas Turbine Heat Transfer; Transport Phenomena in Materials Processing and Manufacturing; Heat and Mass Transfer in Biotechnology; Environmental Heat Transfer; Visualization of Heat Transfer; Education and Future Directions in Heat Transfer
  • Rio Grande, Puerto Rico, USA, July 8–12, 2012
  • Conference Sponsors: Heat Transfer Division
  • ISBN: 978-0-7918-4477-9
  • Copyright © 2012 by ASME


Micro-scale coolers have a wide range of potential application areas, such as cooling for chip- and board-level electronics, sensors and radio frequency systems. Miniature devices operating on the Stirling cycle are an attractive potential choice due to the high efficiencies realized for macroscale Stirling machines. A new micro-scale Stirling cooler system composed of arrays of silicon MEMS cooling elements has been designed. In this paper, we use computational tools to analyze the porosity-dependence of the pressure and heat transfer performance in the regenerator. For laminar flow in the micro-scale regenerator, the optimal porosity is in a range of 0.85∼0.9 based on maximizing the system coefficient of performance (COP). The system’s thermal performance was then predicted considering compressible flow and heat transfer with a large deformed mesh in COMSOL. The Arbitrary Lagrangian-Eulerian (ALE) technique was used to handle the deformed geometry and the moving boundary. To overcome the computational complexity brought about by the fine pillar structure in the regenerator, a porous medium model was used to replace the pillars in the model, allowing for numerical predictions of full-element geometry. Parametric studies of the design demonstrate the effect of the operating frequency on the cooling capacity and the COP of the system.

Copyright © 2012 by ASME



Interactive Graphics


Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In