Аннотация
In applications where both speed and accuracy of computation of thermodynamic properties
are important and particularly where the independent variables are not those used
in Helmholtz equations, direct use of such equations can be excessively time-consuming.
This paper introduces the enthalpy-pressure version of the tabular Taylor series (TTSE)
method, which has the accuracy and computing speed required for application in power
industries. The IAPWS formulation for scientific use, IAPWS-95, was used as the basic
Helmholtz equation. The speed and accuracy of the TTSE have been compared with the
IAPWS formulation for industrial use, IAPWS-IF97, which has been developed to achieve
high-speed calculation with good representation of IAPWS-95 values. Test results show
that the TTSE accurately represents the basic equation and that the computation speed is
higher than that of IF97.
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