X Steam, Thermodynamic properties of water and steam.

Version 1.0.0.0 (192 KB) by Magnus Holmgren

Water properties A complete IAPWS IF-97 standard.

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Updated 1 Aug 2007

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Editor's Note: This file was selected as MATLAB Central Pick of the Week

Steam and water properties for Matlab based on the "International Association for Properties of Water and Steam Industrial Formulation 1997 (IAPWS IF-97). A full implementation of the IF-97 standard that provides very accurate steam and water properties in ranges from 0-1000 bar and 0-2000°C. Provided thermodynamic properties are:

Temperature

Pressure

Enthalpy

Specific volume

Density

Specific entropy

Specific internal energy

Specific isobaric heat capacity

Specific isochoric heat capacity

Speed of sound

Viscosity

Vapour fraction

All properties can be calculated with the inputs, p and T known, p and h known, h and s known and some with pressure and density known. X Steam are a full implementation of the IF-97 formulation including all regions and all backward functions for good calculation speed. The code are speed optimized with pressure and enthalpy as inputs for dynamic simulations.

Examples:

XSteam('h_pt',1,20) return the enthalpy of water at 1 bar and 20 degC. 84.0118 kJ/kg

XSteam('rho_ph',1,3000) return the density of steam at 1 bar and 3000 kJ/kg. 0.4056 kg/m3

XSteam('w_pt',1,20) returns the speed of sound at 1 bar and 20 deg C. 1483.4 m/s

XSteam('tSat_p',1) returns the saturation temperature at 1 bar. 99.6059 deg C

The X Steam Tables are the perfect tool both for replacing paper tables and for advanced calculations. The X Steam tables are open source and free of charge.

The X Steam tables are also available as MS Excel scripts, OOo Sripts, Dynamic Link Libary .DLL. Please visit www.x-eng.com.

New version 2.5

Cite As

Magnus Holmgren (2024). X Steam, Thermodynamic properties of water and steam. (https://www.mathworks.com/matlabcentral/fileexchange/9817-x-steam-thermodynamic-properties-of-water-and-steam), MATLAB Central File Exchange. Retrieved April 1, 2024.

MATLAB Release Compatibility

Created with R12

Compatible with any release

Platform Compatibility

Windows macOS Linux

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Acknowledgements

Inspired: Rankine Cycle Interactive Demo, Water Conductivity & Specific Heat by Temperature, Ideal Rankine Cycle GUI, IAPWS_IF97, Methane Solubility, Ideal Rankine cycle, Ideal Regenerative Rankine Cycle, Ideal Reheat Rankine Cycle, Ideal Reheat Regenerative Rankine Cycle, Ideal Reheat Regenerative Rankine Cycle with one OPEN, one CLOSED FWH, Ideal Regenerative Rankine Cycle with one OPEN, one CLOSED FWH, Chen correlation wall temperature calculation, Water and Steam Refractive Index, Diagrams of Thermodynamic State of Water, XSteamW - a vectorizing wrapper for XSteam, Medium Model

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Version	Published	Release Notes
1.0.0.0	1 Aug 2007	New version with minor fixes	Download