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EXPERIMENTAL DEVICES FOR MEASURING PVT PROPERTIES OF REFRIGERANTS IN A WIDE PRESSURE AND TEMPERATURE RANGE.

Author(s) : BLANKE W., WEISS R.

Summary

THE PHYSIKALISCH-TECHNISCHE BUNDESANSTALT HAS VARIOUS EXPERIMENTAL SET-UPS AT ITS DISPOSAL TO MEASURE THE (PVT) PROPERTIES OF FLUIDS IN THE TEMPERATURE RANGE FROM 100 TO 500 K. THE MEASURING PRINCIPLE APPLIED IN THE STANDARD SET-UPS IS THE CONSTANT-VOLUME METHOD. THE RELATIVE UNCERTAINTY OF MEASUREMENT -RELATED TO THE PV/RT QUOTIENT -IS LESS THAN 0.03% IN THE TEMPERATURE RANGE BETWEEN 280 AND350 K, AT PRESSURES UP TO 12,000 KILOPASCALS, AND MAXIMALLY 0.1% AT OTHER (PVT) STATES. IN NARROWER RANGES OF STATES WHICH ARE, HOWEVER, TECHNICALLY IMPORTANT, ISOTHERMALLY OPERATING DEVICES WHICH ARE FULLY AUTOMATED -AN EXPANSION APPARATUS AND A VIBRATING TUBE DENSIMETER -ARE USED.

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Pages: 771-775

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Details

  • Original title: EXPERIMENTAL DEVICES FOR MEASURING PVT PROPERTIES OF REFRIGERANTS IN A WIDE PRESSURE AND TEMPERATURE RANGE.
  • Record ID : 1992-2127
  • Languages: English
  • Source: New challenges in refrigeration. Proceedings of the XVIIIth International Congress of Refrigeration, August 10-17, 1991, Montreal, Quebec, Canada.
  • Publication date: 1991/08/10
  • Document available for consultation in the library of the IIR headquarters only.

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