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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 65MPa
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Resumo(s)
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(1) and Guedes et al.(2) The results are fitted
to a rational approximant and compared with literature data.(3) Derived thermodynamic
properties such as the isentropic compressibility κs, the isothermal compressibility κT , the
cubic expansion coefficient αp, and the specific heat capacity at constant pressure cp are
calculated by combining the present experimental data with the density values published by
other authors.(4–11) The estimated properties are compared, where possible, with literature
data.
Descrição
Palavras-chave
Speed of sound Alternative refrigerants Trifluoromethane HFC23 Thermodynamic properties . Faculdade de Ciências Exatas e da Engenharia
Contexto Educativo
Citação
Pires, P. F., & Guedes, H. J. R. (1999). The speed of sound, and derived thermodynamic properties of liquid trifluoromethane (HFC23) fromT=(258 to 303) K at pressures up to 65 MPa. The Journal of Chemical Thermodynamics, 31(4), 479-490. https://doi.org/10.1006/jcht.1998.0464
Editora
Elsevier