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Thermodynamic Properties of HFC-227ea

Thermodynamic Properties of HFC-227ea The density and speed of sound in gaseous and liquid 1,1,1,2,3,3,3-heptafluoropropane (HFC-227ea) have been studied by a γ-attenuation technique, an ultrasonic interferometer, and an isochoric piezometer method over the temperature range of 273 to 383 K at pressures up to 3.5 MPa. The purity of the samples used throughout the measurements are 99.99 mol%. The pressures of the saturated vapor were measured over the same temperature range. The experimental uncertainties of the temperature, pressure, density, and speed of sound measurements were estimated to be within ±20 mK, ±1.5 kPa, ±0.2%, and ±(0.15–0.2)%, respectively. On the basis of the obtained data, the isobaric molar heat capacity of HFC-227ea was calculated for the ideal-gas state. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png International Journal of Thermophysics Springer Journals

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References (4)

Publisher
Springer Journals
Copyright
Copyright © 2002 by Plenum Publishing Corporation
Subject
Physics; Condensed Matter Physics; Classical Mechanics; Industrial Chemistry/Chemical Engineering; Physical Chemistry
ISSN
0195-928X
eISSN
1572-9567
DOI
10.1023/A:1015471624752
Publisher site
See Article on Publisher Site

Abstract

The density and speed of sound in gaseous and liquid 1,1,1,2,3,3,3-heptafluoropropane (HFC-227ea) have been studied by a γ-attenuation technique, an ultrasonic interferometer, and an isochoric piezometer method over the temperature range of 273 to 383 K at pressures up to 3.5 MPa. The purity of the samples used throughout the measurements are 99.99 mol%. The pressures of the saturated vapor were measured over the same temperature range. The experimental uncertainties of the temperature, pressure, density, and speed of sound measurements were estimated to be within ±20 mK, ±1.5 kPa, ±0.2%, and ±(0.15–0.2)%, respectively. On the basis of the obtained data, the isobaric molar heat capacity of HFC-227ea was calculated for the ideal-gas state.

Journal

International Journal of ThermophysicsSpringer Journals

Published: Oct 12, 2004

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