Welcome to CoolProp

CoolProp is an open-source database of fluid and humid air properties, formulated based on the most accurate formulations in open literature. It has been validated against the most accurate data available from the relevant references.

• General Information
  • Welcome to CoolProp
    • What is CoolProp?
    • Environments Supported
    • High-Level Interface Example
    • Help
    • Projects Using CoolProp
    • Main Developers
    • Supporters
    • License Information
  • Citation for CoolProp
    • Overview
    • BibTeX
• CoolProp Online
• Fluid Properties
  • Pure and Pseudo-Pure fluid properties
    • Introduction
    • Thermodynamic properties of Fluid
    • List of Fluids
    • Ideal Curves
      • Ideal Curve
      • Boyle Curve
      • Joule Inversion Curve
      • Joule-Thomson Curve
      • Ideal Curves for Refrigerant R125
  • Mixtures
    • Theoretical description
    • Estimating binary interaction parameters
    • Using your own interaction parameters
    • Phase Envelope
    • Reducing Parameters
    • Excess Helmholtz Energy Terms
    • Appendix
    • Binary pairs
  • Humid Air Properties
    • Molar Volume
    • Molar Enthalpy
    • Enhancement factor
    • Isothermal Compressibility
    • Sample HAPropsSI Code
    • Table of Inputs/Outputs to HAPropsSI
    • Psychrometric Chart
    • Humid Air Validation
    • Verification Script
  • Incompressible Fluids
    • General Introduction
    • Pure Fluid Examples
    • Mixture Examples
    • Partial Derivatives
    • Fitting Reports
    • Thermodynamics of Incompressible Fluids
    • Equations
    • The Different Fluids
    • Adding New Fluids
  • IF97 Steam/Water Properties
    • General Introduction
    • IF97 Backend
    • IF97 Range of Validity
    • IF97 Water Property Examples
  • Advanced Fluid Properties
    • Use of Extended Corresponding States for Transport Properties
    • Conversion from ideal gas term to Helmholtz energy term
    • Converting Bender and mBWR EOS
• CoolProp
  • Available Wrappers
    • Common Wrapper Prerequisites
      • Windows
      • Linux
      • OSX
  • High-Level Interface
    • PropsSI function
    • Vapor, Liquid, and Saturation States
    • Imposing the Phase (Optional)
    • Fluid information
    • Trivial inputs
    • PhaseSI function
    • Partial Derivatives
      • First Partial Derivatives for Single-phase States
      • Second Partial Derivatives for Single-Phase States
      • First Saturation Derivatives
    • Predefined Mixtures
    • User-Defined Mixtures
    • Reference States
    • Calling REFPROP
    • Adding Fluids
    • C++ Sample Code
    • C++ Sample Code Output
    • Sample Code
    • Table of string inputs to PropsSI function
  • Low Level Interface
    • Introduction
    • Generating Input Pairs
    • Keyed output versus accessor functions
    • Things only in the low-level interface
    • Imposing the Phase (Optional)
    • Partial Derivatives
    • Two-Phase and Saturation Derivatives
    • Reference States
    • Low-level interface using REFPROP
    • Access from High-Level Interface
  • Tabular Interpolation
    • General Information
    • TTSE Interpolation
    • Bicubic Interpolation
    • Accuracy comparison
    • Speed comparison
    • More Information
  • Configuration Variables
    • Configuration Keys
  • REFPROP Interface
    • Path Issues
    • Other Platforms
    • Other Features
  • Cubic Equations of State
    • Introduction
      • Caveats
    • Pure Fluids
      • Usage
      • Speed
    • Mixtures
      • Interaction Parameters
      • Critical Points
      • Cubics in multi-fluid model
      • Detailed Example
    • Adding your own fluids
      • Complete fluid schema
  • PC-SAFT Equations of State
    • Introduction
      • Caveats
    • Pure Fluids
      • Usage
    • Mixtures
      • Interaction Parameters
  • Examples
    • Sample Props Code
    • Sample HAPropsSI Code
    • Plotting
      • Python Plotting
      • Cycle Calculations
  • Changelog for CoolProp
    • 6.6.0
    • 6.5.0
    • 6.4.3
    • 6.4.2
    • 6.4.1
    • 6.4.0
    • 6.3.0
    • 6.2.1
    • 6.2.0
    • 6.1.0
    • 6.0.0
    • 5.1.2
    • 5.1.1
    • 5.1.0
    • 5.0.8
    • 5.0.7
    • 5.0.6
    • 5.0.5
    • 5.0.4
    • 5.0.3
    • 5.0.2
    • 5.0.1
    • 5.0.0
• Information for Developers
  • See the source files
    • View/Edit sources on github
    • Doxygen formatted documentation of the source files
    • More information
  • Backends in CoolProp
    • AbstractState
    • Derived Backends
    • Example Backend
    • Code
    • Output
  • CMake
  • Buildbot
    • Buildbot masters and workers
      • Master
      • Workers
      • OSX Virtualbox host
      • Python workers
      • Buildbot as a service (Windows)
      • Buildbot and launchd (Mac OS)
      • Buildbot as a daemon (Linux)
      • Buildbot worker management (Mac OS and Linux)
    • Setting MIME type handler
    • Starting VirtualBox images at boot
    • Documentation Builds
    • Work in Progress - Dockerfile Generator
  • Documentation
    • General
    • Build Sphinx documentation
    • Build Doxygen documentation
    • Building the documentation on Linux
    • Building the documentation on Windows
  • Release Checklist
  • Diagnostics and Testing
    • Travis Builds
    • Coverity Scan
    • Address Sanitizer
  • CoolProp Online
    • Getting going on PythonAnywhere
    • Running application locally
    • Useful information
• Bibliography
  • References