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Thermodynamic Properties of Ordinary Water and Steam

in the region 3 of IAPWS-IF97

This calculation page is based on the Supplementary Release on Backward Equations for Specific
Volume as a Function of Pressure and Temperature v(p,T) for Region 3 of the IAPWS Industrial

Formulation 1997 for the Thermodynamic Properties of Water and Steam

Detailed information about used equations, constants, range of validity etc is presented in PDF

version of IAPWS Release which can be downloaded from IAPWS web site

http://www.iapws.org/relguide/Supp-VPT3-2014.pdf

Authors: Valery Ochkov (ochkov@twt.mpei.ac.ru), Vsevolod Znamensky and Aung Thu Ra Tun

from National Research University "Moscow Power Engineering Institute" (MPEI). Last update: 2014/09/23

Note that displayed last digits depends on numeric implementation of underlying formulations.

Download coefficients >>>

Input parameters (see the Region 3 in the p-T plot >>>)

Subregion 3a

Is this point with p and T in this Subregion: 0 - No, 1 - Yes

If this point with p and T is in this Subregion n (n = a..z) - v = v_3n, else v = 0

Subregion 3b

Subregion 3c

Subregion 3d

Subregion 3e

Subregion 3f

Subregion 3g

Subregion 3h

Subregion 3i

Subregion 3j

Subregion 3k

Subregion 3l

Subregion 3m

Subregion 3n

Subregion 3o

Subregion 3p

Subregion 3q

Subregion 3r

Subregion 3s

Subregion 3t

Subregion 3u

Subregion 3v

Subregion 3w

Subregion 3x

Subregion 3y

Subregion 3z

Your point is in the

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