============= CoolProp IF97

(c) Ian Bell and the CoolProp team

This repository implements the IF97 formulation for the properties of pure water substance.

Why?

Almost all of the other implementations of IF97 are not free and closed-source. This implementation is:

• Entirely free and open-source (see license below)
• Written in optimized standard C++ code so it will compile anywhere
• Fast
• Easy-to-use (just a single header)

Try it

Build the cmake project doing something like

mkdir build
cd build
cmake ..
cmake --build .

This will spit out the values for the computer-program verification, they should agree with the values from http://www.iapws.org/relguide/IF97-Rev.pdf . In Region 3, the backwards equations are used, which results in some loss of precision, but it is usually less than 0.001%

Usage

See IF97.cpp.

The primary functions needed are rhomass_TP(T,p), hmass_Tp(T,p), etc. where in all cases, the units are base-SI units (Pa, K, J/kg, etc.)

There are also Tsat97(p) and psat97(T) functions to get values from the saturation line.

License

MIT-style license (see LICENSE)

Basically, you can do anything you like with the code. The MIT license is a very permissive license, allowing you to modify, distribute, sell, etc. the code. It is not a copy-left license, you can use this in commercial code.

You are strongly requested, but not required, to cite both this repository and that of coolprop: www.coolprop.org

Wrappers

Wrappers directory started for 3rd Party Apps, including:

• Mathad 15 (Jeff Henning main contributor)