Title of article :
Vapor-Phase Thermal Conductivity Measurements of Refrigerants
Author/Authors :
S. H. Jawad، نويسنده , , M. J. Dix and W. A. Wakeham ، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 1999
Abstract :
The paper reports further developments of the transient hot-wire technique. The
particular development of iInterest is the extension of the technique to study
polar, or electrically-conducting gases with a relatively low thermal conductivity
but a high thermal diffusivity, circumstances which occur at low density and
therefore low pressure, for gases of high molecular weight. The theory of the
transient hot-wire instrument is examined again in order to guide a revised
design of the thermal conductivity cell with this particular application in mind.
Test measurements have then been conducted on helium, argon, and propane at
low and moderate pressures to confirm that the instrument operates in accordance
with the theory of it. The satisfactory completion of these tests demonstrates
that the new equipment overcomes many of the defects observed in earlier
variants of the instrument for application to the study of refrigerant gases.
Keywords :
argon , Experimental method , Low density , helium , Propane , thermal conductivity.
Journal title :
International Journal of Thermophysics
Journal title :
International Journal of Thermophysics