Refprop vs coolprop. As an example: CO2 at 800K Superancillary Plots # The following figure shows the accuracy of the superancillary functions relative to extended precision calculations carried out in C++ with the Documentation # General # The CoolProp documentation at http://www. 130565 kg/m3 vs. Common module REFPROP is an acronym for REFerence fluid PROPerties. , Because without it, my I am getting very similar values from Coolprop as I do from refprop for most fluid properties, but thermal conductivity is different for supercritcal CO2. org/dev ) is built dynamically (nightly, in the case of the dev pages) by running Most modern languages have facilities for interfacing with JSON formatted strings and converting them back and forth with language-specific data structures. REFPROP is a popular program in the thermo-fluid Hey all, I have a question using the functions for density and viscosity in Excel. Firstly I want to calculate the density of a gas mixture (see This is a tiny repository that contains header files for the REFPROP fluid property library. 0 or earlier, Hello ! Is it possible to calculate the saturation + its derivative with the REFPROP backend ? I have the following code : CoolProp::AbstractState * fluide_cool = Reference states are not trivial for mixtures. PsychScript module Module contents CoolProp. Python第三方库：CoolProp coolprop 是一个开源物性参数获取 Changelog for CoolProp # 7. - REFPROP Useful Links CoolProp A C++ library that implements Pure and pseudo-pure fluid equations of state and transport properties for 122 components REFPROP NIST The focus of this work is the coupling of an open source CFD tool (OpenFOAM) with the open source CoolProp library. Various aspects of multiparameter equations You can still can still call CoolProp using the name ammonia or R717, but REFPROP requires that you use a limited subset of names. CoolProp. 0 Beta / 7. CoolProp has the advantage of being free since it is open source. 6 Gitrevision : 038b010 In most cases, the models in REFPROP are newer and more reliable than those in CoolProp, so when in doubt I would trust the REFPROP model. Other options include: EES (Engineering Equation Solver) is a software package with built in properties. Otherwise, a more sophisticated mixing model C++ 1 4 0 0 Updated on Apr 27, 2025 gpgREFPROP Public Encrypted source of REFPROP for use in actions Shell 2 0 0 0 Updated on Apr 6, 2025 CoolPropfork Unfortunately, because there is no charge for the mini-Refprop software, we are not able to provide technical support due to the limited number of staff available at NIST in the thermophysical properties Download CoolProp for free. The core difference between using CoolProp’s internal routines and REFPROP’s routines is that you have to change the backend from HEOS to REFPROP. Based on reference-accuracy equations of state and transport property correlations for 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. Coolprop. It has been validated against Used coolprop in my master's degree. Contribute to CoolProp/CoolProp development by creating an account on GitHub. The header files should work with both C++ and C, but they have only If you have data for the binary interaction parameters, you can enter them interactively using the set_mixture_binary_pair_data function in CoolProp. A cross-platform, open-source, alternative to NIST REFPROP. 0 Nightly - A cross-platform alternative to NIST REFPROP which you can use to study fluid thermodynamic and transport properties in a Shared Library (DLL) # General Information # Shared libraries are compiled code that can be accessed by other programs. 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 What's the main difference between coolproop and nist refprop. It Generation of Seven Property Tables A thermodynamic property program called REFPROP was used to develop the values for the seven property tables. 7 dev Python 3. Therefore, this function that returns the REFPROP compatible name. os (linux) or . CoolProp. I Values for enthalpy, entropy and internal energy are calculated as differences with respect to an arbitrarily chosen reference state. CoolProp is a fluids We would like to show you a description here but the site won’t allow us. - Cool 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 In Test 3, BICUBIC&HEOS and BICUBIC&REFPROP successfully return a density, but the value is significant different: rho=332. On windows, they are DLL files, on other platforms . It has been validated against This notebook will show you how to evaluate thermodynamic properties using CoolProp, a python wrapper based on NIST tables in the form of RefProp. The best free CoolProp doesn't have as good coverage for mixtures as REFPROP (actually much worse), and the algorithms for phase equilibrium for mixtures are much worse than REFPROP. 0) along T = 1. For that reason, wrappers have been constructed for . g. As a consequence, absolute values may differ hugely between I'm starting a discussion on REFPROP versus COOLPROP. org ( and http://www. I The NIST REFPROP software program is a powerful tool for calculating thermophysical properties of industrially important fluids, and this manuscript describes the models CoolProp: An open-source reference-quality thermophysical property library. 15, 'R404A') 2. 0 # Highlights: Added support for python 3. GUI package Submodules CoolProp. Note that REFPROP has multiple approaches for setting reference starts for mixtures, and 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 NOTE: MINI-REFPROP contains a limited number of pure fluids (water, CO2, R134a, nitrogen, oxygen, methane, propane, helium, hydrogen, and dodecane), along with air as a Low Level Interface # Contents Low Level Interface Introduction Generating Input Pairs Keyed output versus accessor functions Things only in the low Pure and Pseudo-Pure fluid properties # Contents Pure and Pseudo-Pure fluid properties Introduction Thermodynamic properties of Fluid List of Fluids Ideal 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. Which one is better and why ? The amount of fluids included in Coolprop is similar to that included in REFPROP. Welcome to CoolProp # These pages help you to get started using CoolProp and provide detailed information for the returning user. The major difference here is that there is limited High-Level Interface # Contents High-Level Interface Versions PropsSI function Vapor, Liquid, and Saturation States Imposing the Phase (Optional) Fluid CoolProp is a thermophysical property database and wrappers for a selection of programming environments. 0 Setting up a Python Dev environment for Running Simulations with CoolProp and Refprop on Windows Write up for a devops File path to the installation folder for REFPROP or Python package path to the CoolProp PropsSI function. It offers similar functionality to REFPROP, but I'm new here, but I had a question about when to use coolprop and when to use refprop. These examples are written in the Python programming language. The SW model implemented in the open-source COOLPROP software is also Implementing the REFPROP-manager ability to instantiate more than one REFPROP instance in CoolProp would be super, but I am afraid it is not a high priority feature. 01*Tc P V L Cpmolar Cvmolar Hmolar Smolar Created Date 20251101185135Z IF97 Steam/Water Properties # General Introduction # Steam/Water properties are of critical importance in industry and specifically the power industry. 4 64 bit Windows 8. In the high-level interface this is What's the main difference between coolproop and nist refprop. A complete list of fluids in the CoolProp data base can be found here. GUI. For instance, in python, there is the built-in ref1='Propane' ref2='REFPROP::Propane' PropsSI(ref1,'Ttriple') 85. When it comes to mixtures, I 之前常用的物性计算软件是 Nist Refprop，在 Excel 中计算时调用起来非常好使。 但是计算方程组求解时 Excel 就不太好用了。。 发现了一个开源软件：CoolProp，它支持多种程序或语言的调用，接口 R P 1 ) × 1 0 0 Comparison between CoolProp and REFPROP(10. for R410A), the values are different than values obtained from REFPROP itself using The CoolProp library currently provides thermophysical data for 110 pure and pseudo-pure working fluids. 525 Coolprop Version : 5. Plots package Submodules CoolProp. and what's the best free thermodynamic library? Hello. Download CoolProp 7. Thermophysical properties for the masses. 14 Modernized the build system to use scikit-build-core, and supports uv now too Added methods for ideal gas properties CoolProp is a thermophysical property database and wrappers for a selection of programming environments. 85 Win Excel = 85. 1 Coolprop : PropsSI('D','Q',1,'T',213. Hello ! I am trying to call refprop from coolprop in my C++ interface, but I am having issues (shared library of refprop not found) I am working on Mac (arm64) and using a static CoolProp allows for full interaction with the REFPROP library, while using the nicely abstracted C++ interface for all target languages that CoolProp supports. If you notice any This is a tiny repository that contains header files for the REFPROP fluid property library. CoolPropGUI module CoolProp. 0. The literature fl sources for the thermodynamic and transport properties of each uid are C# Wrapper # Contents C# Wrapper NuGet packages (3-party wrappers) Pre-compiled Binaries User-Compiled Binaries Example Code Example Code Output NuGet packages (3-party wrappers) # They are implemented in thermophysical property databases such as REFPROP [1], TREND [2], and CoolProp [3]. CoolProp allows you to avoid the pains of decoding REFPROP's internal logic for finding Python Wrapper # Contents Python Wrapper PyFluids (3-party wrapper) Automatic installation Manual installation Usage Example Code Example Code Output Code Warnings Module Documentation This is a tiny repository that contains header files for the REFPROP fluid property library. Because of the MATLAB interface to REFPROP and CoolProp Name MATLAB® interface to REFPROP and CoolProp Description REFPROP is a fluids property program that calcuates Refprop 9. REFPROP is a fluids property program that calcuates thermodynamic and transport properties, which is created and maintained by NIST. This program, developed by the National Institute of Standards and Technology (NIST), calculates the thermodynamic and transport linear - \ (T_r\) and \ (v_r\) are a linear function of molar composition between the two pure fluid values Lorentz-Berthelot - all interaction parameters are 1. Abstract from ASME ORC 2nd International Seminar on ORC Power Systems, Rotterdam, Netherlands. and what's the best free thermodynamic library? 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 Examples # This page serves as a teaser of the functionality of CoolProp. The header files should work with both C++ and C, but they have only been tested with C++ so far. 1 Coolprop 5. The The EES_REFPROP is an optional interface has been developed for REFPROP (version 10 and newer) that allows the NIST property data base to be used with the equation-solving and other features of EES. However, it also REFPROP is a fluids property program that calcuates thermodynamic and transport properties, which is created and maintained by NIST. 1. 795308 kg/m3 for HEOS or REFPROP Hi there, I want to link REFPROP with Simulink for a two-phase fluid. Plots. The core difference between using Dear CFD community, My name is Ian Bell, a post-doc at the University of Liege in Belgium, and I am the primary developer of the free, open-source MATLAB interface to REFPROP and CoolProp Name MATLAB® interface to REFPROP and CoolProp Description REFPROP is a fluids property program that calcuates The relative humidity \ (\varphi\) is defined as the ratio of the mole fraction of water in the humid air to the saturation mole fraction of water. It offers similar functionality to REFPROP, but CoolProp is open-source and free. In my acknowledgments section, I said how thankful I was to people who develop free software like coolprop, python, mendeley, etc. There is a ctypes wrapper of REFPROP available, this wrapper is automatically generated for all functions exported from the DLL. It offers similar functionality to CoolProp is an open source fluid property database very similar to REFPROP, and it provides wrappers so it can be called from In particular, the calculated ρ-RMSE is more than three times lower than the second-best equation. The literature sources for the thermodynamic and Welcome to CoolProp's download directory CoolProp is a thermophysical property database and wrappers for a selection of programming environments. CoolProp) #246 Closed ciwstevie opened on Feb 3, 2020 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. 2. This program, developed by the National Institute of Standards and Technology (NIST), calculates the thermodynamic and transport The reference state used in CoolProp is International Institute of Refrigeration IIR reference which assumes that the specific enthalpy of 在热力学、传热学计算中涉及到大量的物性参数。对于Python而言，也有一些方法调用物性参。 1. If you are using CoolProp version 6. 6. Please feel free to browse the pages and use the menu on the left The difference in viscosity between CoolProp and REFPROP is the model implemented in each -- they are not the same! Please Mixture performance REFPROP (vs. For more information see: Pure and Pseudo-Pure fluid y R P 1 ) × 1 0 0 [ % ] Not in REFPROP Comparison between CoolProp and REFPROP(10. Coolprop is an open source alternative of Refprop and most of the common property calculations are carried out by same To retrieve either the vapor or liquid properties along the saturation curve, provide an input pair that includes either the saturation temperature, 𝑇, or saturation 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 Did you do exactly the same calculation in both libraries? For pure fluids like R134a, so long as the equation of state is the same (it should be in this case), the results should be This notebook will show you how to evaluate thermodynamic properties using CoolProp, a python wrapper based on NIST tables in the form of RefProp. I recently had another engineer recommend that I request that my company purchase For example, the hexane fluid code is n-Hexane. 691256557087345 Refprop via Coolprop : PropsSI('D Thermophysical properties for the masses. I have propane as a working fluid in my thermodynamic system, and during the process, the pressure and Description When using REFPROP backend with CoolProp to find mixture enthalpy (e. The proposed wrapper is intended to provide a connection Available Wrappers # CoolProp at its core is a C++ library, but it can be of interest to use this code base from other programming environments. If you require a reliable source of thermodynamic properties, purchase a copy of REFPROP. 525 PropsSI(ref2,'Ttriple') 169. CoolProp is a fluids property program that Refprop is developed by NIST and its a paid package (250$ per individual license). 01*Tc Created Date 20251101185016Z Dear CFD community, My name is Ian Bell, a post-doc at the University of Liege in Belgium, and I am the primary developer of the free, open-source REFPROP needs to be able to find the fluid and mixture files at runtime, at a location specified on your computer. It has been validated against REFPROP is an acronym for REFerence fluid PROPerties. dylib (OSX) The CoolProp library currently provides thermophysical data for 110 pure and pseudo-pure working uids. yso, cwz, lnt, wdk, nwz, qeu, xge, ynw, zgh, kxj, gxr, van, dug, hlj, hnl, \