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The speed of sound, and derived thermodynamic properties of liquid trifluoromethane (HFC23) fromT = (258 to 303) K at pressures up to 65 MPa

✍ Scribed by P.F. Pires; H.J.R. Guedes

Publisher
Elsevier Science
Year
1999
Tongue
English
Weight
152 KB
Volume
31
Category
Article
ISSN
0021-9614

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✦ Synopsis

This work reports experimental data of the speed of sound in liquid trifluoromethane (HFC23, or R23) from T = (258 to 303) K at pressures up to 65 MPa, measured with a pulse-echo method adapted from Papadakis and Guedes et al. The results are fitted to a rational approximant and compared with literature data. Derived thermodynamic properties such as the isentropic compressibility ΞΊ s , the isothermal compressibility ΞΊ T , the cubic expansion coefficient Ξ± p , and the specific heat capacity at constant pressure c p are calculated by combining the present experimental data with the density values published by other authors. The estimated properties are compared, where possible, with literature data.

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