Welcome to CoolProp

These pages help you to get started using CoolProp and provide detailed information for the returning user. Please feel free to browse the pages and use the menu on the left to navigate on this website.

What is CoolProp?

CoolProp is a C++ library that implements:

• Pure and pseudo-pure fluid equations of state and transport properties for 137 components

• Mixture properties using high-accuracy Helmholtz energy formulations

• Correlations of properties of incompressible fluids and brines

• Computationally efficient tabular interpolation with SVD+SBTL or bicubic/TTSE

• Highest accuracy psychrometric routines

• User-friendly interface around the full capabilities of NIST REFPROP

• Fast IAPWS-IF97 (Industrial Formulation) for Water/Steam

• Cubic equations of state (SRK, PR)

• PC-SAFT equation of state

• Strict GERG-2004 / GERG-2008 equations of state for natural gases

Environments Supported

Programming Languages:

• Fully-featured wrappers: Python (2.x, 3.x), C++ (as static library), C++ as shared library, Modelica, Octave, C#, VB.net, MathCAD, Java, Android, MATLAB

• High-level interface only: Labview, EES, Microsoft Excel, LibreOffice, Javascript, PHP, FORTRAN, Maple, Mathematica, Scilab, Delphi & Lazarus, Julia

Architectures:

• 32-bit/64-bit

• Windows, Linux, OSX, Raspberry PI, VxWorks Compact Rio, etc. (if you can compile C++ on it, CoolProp will run)

High-Level Interface Example

In most languages, the code to calculate density D of Nitrogen at a temperature T of 298 K and a pressure P of 101325 Pa is something like:

rho = PropsSI('D', 'T', 298.15, 'P', 101325, 'Nitrogen')

See more examples of PropsSI usage at High-Level interface or Examples

Help

• (General Discussion) Create a new discussion at Github CoolProp Discussions

• (Bugs, feature requests) File a Github issue

• (Support the project) Sponsor CoolProp

Projects Using CoolProp

• Thermocycle - open-source library for dynamic modelling of thermal systems

• PDSim - quasi-steady simulation of positive displacement compressors and expanders

• ACHP - modelling direct expansion and secondary loops for residential-scale systems

• DWSim - chemical process simulator

• fProperties - fluid properties calculator

• CoolPropJavascriptDemo - web calculator using mathjs

• pSolver - analyze, solve and edit problems on a graphical sheet

• HydDown - calculating hydrogen pressure vessel filling and discharge

• HYRAM+ - hydrogen and other alternative fuels risk assessment models

• UH2SC - underground hydrogen salt cavern simulation tool

• Calcumber – notebook-style unit-aware web calculator

Main Developers

Warning

Please do not email the developers directly, see Help above for assistance (this way the correspondence is google-able)

The primary developers are:

• Ian Bell, Bell Thermal Consultants

• Jorrit Wronski, IPU Refrigeration and Energy Technology, Kgs. Lyngby, Denmark

• Sylvain Quoilin, Vincent Lemort, Thermodynamics Laboratory, University of Liege, Liege, Belgium

Please be so kind and cite our work in your publication: Citation information.

Supporters

License Information

CoolProp has flexible licensing terms and you can use it for commercial projects and academic work free of charge. Have a look at the actual license, if you are in doubt.