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Operational characteristics of Stirling machinery.

Author(s) : KWON Y. R., BERCHOWITZ D. M.

Summary

The paper presents an application of the Stirling cycle for freezers, refrigerators, portable cool boxes, and some commercial applications. A commercially available FPSC (free-piston Stirling cooler) for small capacity applications (40 watts class at ASHRAE conditions) is discussed as an example of the technology. The operational characteristics of the FPSC and Stirling cooling systems in general are presented. Particular focus is placed on applications requiring temperatures above -120 °C. The modulation of cooling capacity is by stroke control and is in response to a temperature signal. A typical performance map showing COP and cooling capacity for given temperatures and drive voltage is presented. Such maps are a convenient means to determine the performance of a FPSC for a given application. Integration of the FPSC and heat transport to and from the FPSC are central issues for a complete system and strongly affect the overall performance.

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Details

  • Original title: Operational characteristics of Stirling machinery.
  • Record ID : 2004-1197
  • Languages: English
  • Source: 21st IIR International Congress of Refrigeration: Serving the Needs of Mankind.
  • Publication date: 2003/08/17

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