Introduction

1. Thermodynamic Tables B.1 Thermodynamic properties of steam, temperature table B.2 Thermodynamic properties of steam, pressure table B.3 Thermodynamic properties of superheated steam B.4 Thermodynamic properties of air B.5 Specific heats of common gases B.6 Molar specific heats of common gases Principles of Turbomachinery.
2. Table A–1 Molar mass, gas constant, and critical-point properties Table A–2 Ideal-gas specific heats of various common gases Table A–3 Properties of common liquids, solids, and foods Table A–4 Saturated water—Temperature table Table A–5 Saturated water—Pressure table Table A–6 Superheated water Table A–7 Compressed liquid water.
3. Thermodynamic free download. DWSIM - Open Source Process Simulator DWSIM is an open source, CAPE-OPEN compliant chemical process simulator for Windows, Linux and macOS.
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freesteam is an open source implementation ofinternational-standard IAPWS-IF97 steamtables from the International Association for the Properties of WaterandSteam (IAPWS). freesteam lets you compute water and steam properties for a wide range of pressures and temperatures: you can specify the state of the steam in terms of a variety of combinations of 'known' properties, then freesteam will solve and allow you to query to find the values of the 'unknown' properties.

Download CoolingPower for free. Print Steam Tables; Plot diagrams and cycles from equations of state. CoolingPower is NOT in a condition for use at this time. A couple of bugs have been discovered that severely affect the calculation accuracy.

The library includes bindings for the Python language, as well as bindings to allow it to be used from the ASCEND modelling environment. For Windows and Mac and Ubuntu users, convenient binary packages are provided.

New: Freesteam 2.0 released! This is a complete rewrite of freesteam in the C language, for faster, smaller binaries and better compatibility for accessing the DLL/SO from different C++ compilers.

There is a mailing list for freesteam users, which is the preferred support mechansim (it ensures that FAQs are captured for others to re-use). Alternatively, you can email the developer directly on john.pye@anu.removethisrubbish.edu.au(spam protection). The project is currently under active development (as of Jan 2010), and contributions are most welcome!

1. What can I do with it?

• (p,T)
• (p,h)
• (p,s)
• (p,v)
• (T,s)
• (T,x)

The above properties are accessed using functions in C, like double p = freesteam_p(S), and using properties in Python, like p = S.p.

Calculation of surface tension is not currently implemented in version 2.0

Saturation curves and the boundary curves used internally by IAPWS-IF97 canalso be accessed, if required.

Freesteam is now able (version 2.x)to auto-generate a complete set of steam tables suitable for student use, as well as a range of property diagrams, using Python code. Some property diagrams produced using freesteam-0.8.1 are also available.

Please check out the example code

2. License

freesteam is released underthe GNU GPL, which is available onlineathttp://www.gnu.org/copyleft/gpl.html.It is also distributed with the source code distribution for freesteam,as LICENSE.txt.

Code 128 auto font free download. Note that under the GPL, you cannot sell or otherwise distribute any code that dynamically or statically links to the freesteam library unless your code is also licensed under the GPL.

3. Bugs

For a complete up-to-date list of bugs and feature requests, visitthe Mantis bug tracker forthe project. We are not using the SourceForge 'tracker' at this stage.

Some of the bugs current at the time of writing:

• Mac binary installer does not include the sample Python scripts
• There are still some small errors in the (p,h) calculation, of the order of 0.1%.
• Our documentation needs to clearly indicate which IAPWS releases are used to provide different functionality.

4. Future directions

Some of the things waiting 'on the drawing board' are as follows. If you can help, please let me know!

High priority

• Updated documentation!
• Some more example code.

DIY Ideas 4U

• We would like to expose freesteam functionality to Excel via the XLW wrapper classes.
• Backwards correlations should be iteratively refined by a subsequent Newton solver stage, to reduce errors associated with their use.
• An add-in for OpenOffice would be good. Have received some partially-working source code for this from Allan Curtis
• Region 5 has not yet been implemented at all, but it's a low priority. Let us know if you'd need it.
• Develop a cross-platform GUI version using GTK+ or similar.

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5. Related sites

IAPWS-IF97 steam tables

http://www.iapws.org/
http://www.iapws.org/relguide/visc.pdf
http://www.iapws.org/relguide/thcond.pdf
http://www.iapws.org/relguide/IF97.pdf
http://www.iapws.org/relguide/supsat.pdf
IAPWS paper fromJournal of Engineering for Gas Turbines and Power

Bernhard Spang's summary of IF97

http://www.cheresources.com/iapwsif97.shtml

IAPWS-95 scientific formulation

http://www.iapws.org/relguide/IAPWS95.pdf

Surface tension

http://www.iapws.org/relguide/surf.pdf

CppUnit

http://cppunit.sourceforge.net/cgi-bin/moin.cgi

http://sourceforge.net/projects/cppunit

Rettig's units-of-measurement stuff

http://www.embedded.com/shared/printableArticle.jhtml?articleID=9900094

http://www.embedded.com/code/2001code.htm

Brent solver

http://www.library.cornell.edu/nr/bookcpdf.html

Free (in the OS sense) IAPWS calculators

jSteam (a Java implementation, based on freesteam, GPL licensed)

IF97 (a Java implementation, LGPL licensed)

X Steam (for Excel, OpenOffice and Matlab, licensing unclear)
Bernhard Spang's IF-97 Excel plug-in http://www.cheresources.com/iapwsif97.shtml(Visual Basic)

Leon Kos, University of Ljubljana: http://www.lecad.uni-lj.si/~leon/research/iapws-if97/IAPWS97.html(Javascript)

Commercial IAPWS calculators

ChemicaLogic, USA: SteamTab SDK

University of Applied Sciences Zittau/Görlitz, Germany: FluidEXL

Edward Throm: ASTEM97

G&P Engineering: StmProps

Zittau/Goerlitz University of Applied Sciences: LibIF97

Wagner, Wolfgang, Kretzschmar, Hans-Joachim, International Steam Tables - TheIndustrial Standard IAPWS-IF97 for the Thermodynamic Properties andSupplemetary Equations for Other Properties: Tables, Algorithms,Diagrams, Software, 2nd ed., 2006 (!),Springer, Germany.

MegaWatSoft: Steam97

ARC Engineering plc: arcSteam

GP International: GPSteam ('ASME97' formulation)

TechWare Engineering: WinSteam

WaterSteamPro

Rudjer Boskovic Institute: ISANOIapwsif97

Other steam calculators (Non IF97)

WinSim STEAM67(ASME 1967 Steam Tables, with source code in C)
PARVO95, PARVO67 http://fortraner.narod.ru/(Fortran) In Russian, not tested.

Taftan Thermo Utilities (IFC '67 correlation)

Some useful steam table charts

Copied from Reynolds' ThermodynamicProperties in SI, Stanford Univ, 1979:
h-s, p-h, T-s, v-u

Generally of interest about water and steam:

http://www.lsbu.ac.uk/water/index.html

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