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MEASUREMENT OF THERMAL PROPERTIES OF CRYOCOOLER MATERIALS.

Author(s) : ZIMMERMAN J. E.

Summary

THE AA. HAVE DEVELOPED A METHOD OF MEASUREMENT IN WHICH THE THERMAL CONDUCTIVITY AND THE SPECIFIC HEAT ARE DERIVED FROM OBSERVATIONS OF THE TIME-DEPENDENT TEMPERATURES AT TWO OR MORE POINTS ON A CYLINDRICAL SAMPLE IN RESPONSE TO A STEP FUNCTION OF HEAT APPLIED TO ONE END OF THE SAMPLE. SOME PRELIMINARY RESULTS HAVE BEEN OBTAINED ON G-10 EPOXY LAMINATED TUBING. THESE TRANSIENT MEASUREMENTS GIVE RESULTS IN MUCH LESS TIME THAN THE STEADY-STATE METHOD, AND HAVE THE ADDITIONAL ADVANTAGE OF BEING ADAPTABLE, WITH FAIR ACCURACY, TO THE CRYOCOOLER STRUCTURE ITSELF, OR TO A SEPARATE STRUCTURE GEOMETRICALLY SIMILAR TO THE CRYOCOOLER.

Details

  • Original title: MEASUREMENT OF THERMAL PROPERTIES OF CRYOCOOLER MATERIALS.
  • Record ID : 1982-0415
  • Languages: English
  • Publication date: 1980
  • Source: Source: NBS spec. Publ./ Conf. NBS-IIF, Boulder
    n. 607; 173-177; 3 fig.; 1 ref.
  • Document available for consultation in the library of the IIR headquarters only.

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