DTh: Density, Function of Temperature and Enthalpy

In IAPWS95: Thermophysical Properties of Water and Steam

Density, Function of Temperature and Enthalpy

Description

The function DTh(Temp,h,digits=9) returns the water density, D [ kg m-3 ], for given Temp [K] and h [ kJ kg-1 ] (it may have two solutions for Density).

Usage

DTh(Temp, h, digits = 9)

Arguments

Temp	Temperature in Kelvin
h	Enthalpy in [ kJ kg-1 ]
digits	Digits of results (optional)

Details

This function calls a Fortran DLL that solves the Helmholtz Energy Equation. in accordance with the Revised Release on the IAPWS Formulation 1995 for the Thermodynamic Properties of Ordinary Water Substance for General and Scientific Use (June 2014) developed by the International Association for the Properties of Water and Steam, http://www.iapws.org/relguide/IAPWS-95.html. It is valid from the triple point to the pressure of 1000 MPa and temperature of 1273.

Value

The Density 1: Density_1 [ kg m-3 ]

The Density 2: Density_2 [ kg m-3 ]

Error Message (if an error occur: errorCodes)

Examples

Temp <- 500.
h <- 977.181624
D_Th <- DTh(Temp,h)
D_Th

IAPWS95 documentation built on Sept. 11, 2023, 5:11 p.m.