Thermal Conductivity,Thermal Diffusivity,and Heat Capacity of Gaseous Argon and Nitrogen |
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Authors: | L?Sun Email author" target="_blank">J?E?S?VenartEmail author |
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Affiliation: | (1) Department of Mechanical Engineering, University of New Brunswick, P. O. Box 4400, Fredericton, New Brunswick, E3B 5A3, Canada |
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Abstract: | Low-pressure thermal conductivity and thermal diffusivity measurements are reported for argon and nitrogen in the temperature range from 295 to 350 K at pressures from 0.34 to 6.9 MPa using an absolute transient hot-wire instrument. Thermal conductivity measurements were also made with the same instrument in its steady-state mode of operation. The measurements are estimated to have an uncertainty of 1% for the transient thermal conductivity, 3% for the steady-state thermal conductivity, and 4% for thermal diffusivity. The values of isobaric specific heat, derived from the measured thermal conductivity and thermal diffusivity, are considered accurate to 5% although this is dependent upon the uncertainty of the equation of state utilized.Paper presented at the Sixteenth European Conference on Thermophysical Properties, September 1–4, 2002, London, United Kingdom |
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Keywords: | argon heat capacity nitrogen steady-state hot-wire technique thermal conductivity thermal diffusivity transient hot-wire technique |
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