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Título
A simple semiempirical method for predicting the temperature-entropy saturation curve of pure fluids
Autor(es)
Materia
Physics
Termodinámica
Entropía
Fecha de publicación
2018-12
Resumen
[EN]In this work we propose an approximate analytical method to obtain the liquid-
vapor saturation curve in a Tr s diagram, with Tr = T=Tc, s = (s sc)=R, Tc the
critical temperature, s the molar entropy, sc the critical molar entropy and R the gas
constant, for a given
uid. The method uses a modi ed rectilinear diameter law for the
saturated liquid and vapor entropies and an extended corresponding states equation
for the entropy of vaporization. From this method two approximations are derived.
The rst approximation requires the use of data obtained from RefProp or a similar
program. The second approximation only needs Tc, the critical molar volume, vc, and
the acentric factor, !, of the fuid as input data. For most fuids both approximations
yield very good predictions. for the entropy of vaporization. From this method two approximations are derived.
The rst approximation requires the use of data obtained from RefProp or a similar
program. The second approximation only needs Tc, the critical molar volume, vc, and
the acentric factor, !, of the
uid as input data. For most
uids both approximations
yield very good predictions.
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Colecciones
- GIOETFE. Artículos [53]