NIST REFPROP (Reference Fluid Thermodynamic and Transport Properties) is a proprietary software developed by the National Institute of Standards and Technology (NIST). not available for free download
, and searching for "free" versions often leads to sites hosting malware or pirated content.
To obtain a legitimate copy of REFPROP 10, you must purchase it through official channels: Standard Reference Data Program (NIST)
: You can buy the full version (Standard Reference Database 23) directly from the NIST website Version 10 Enhancements
: The 2021 period saw updates focused on new refrigerants and improved mixture models, which are included in the official Version 10 release. Legitimate Free Alternatives
If you need high-accuracy thermodynamic properties but do not have a budget for REFPROP, consider these open-source options:
: This is the most popular free alternative. It is an open-source library that covers a vast range of fluids and mixtures, including many of the same formulations used in REFPROP. It integrates easily with Python, MATLAB, Excel, and C++. REFPROP Mini (DLL)
: NIST sometimes provides a "Mini-REFPROP" viewer or limited DLLs for educational use, though these are restricted to a very small number of fluids (usually water, nitrogen, and R134a). Security Warning
Avoid downloading files from unofficial forums or "crack" sites claiming to offer REFPROP 10 free download 2021 . These files frequently contain: Trojans/Keyloggers : Designed to steal credentials from your workstation. Ransomware : Which can encrypt your research data. Broken DLLs refprop 10 free download 2021
: Which can cause significant calculation errors in your engineering simulations.
The full version of NIST REFPROP 10 is not available as a free download. It is a proprietary database developed by the National Institute of Standards and Technology (NIST) and requires a paid license for full access. National Institute of Standards and Technology (.gov) 1. Official Purchase & Cost As of 2021, the standard pricing for the full database is: New Purchase for a single-user download. if upgrading from a previous version (e.g., 9.x to 10.x). Official Link : You can purchase it directly through the NIST REFPROP product page 2. Free Alternatives & Trials
If you need the software for testing or educational purposes without paying the full fee, NIST provides a limited free version: mini-REFPROP
: This is a free, functional version of the program but is restricted to a small subset of fluids (e.g., water, cap C cap O sub 2 cap R 134 a
, nitrogen, oxygen, methane, propane, helium, hydrogen, and dodecane). It is primarily intended for teaching purposes and does not include technical support. : Available at the mini-REFPROP portal Open-Source Alternative : Many researchers use
, which is an open-source, free alternative that provides similar thermophysical property calculations. National Institute of Standards and Technology (.gov) 3. Installation & Updates
For users who already own a license, the following resources are available for setup:
REFPROP | NIST - National Institute of Standards and Technology Download REFPROP 10: $325.00 PLACE ORDER. National Institute of Standards and Technology (.gov) mini-REFPROP - Version 10.0 or spyware. Data Integrity: In engineering
While REFPROP 10 is a commercial software that requires a paid license from the National Institute of Standards and Technology (NIST), you can legally access parts of its functionality for free through several official and open-source alternatives: 1. Official "mini-REFPROP" (Free Student Version)
NIST provides a free, streamlined version called mini-REFPROP. This is designed as a teaching tool and is perfect if you only need to work with common fluids. Included Fluids: Water, CO2cap C cap O sub 2 R134acap R 134 a
, Nitrogen, Oxygen, Methane, Propane, Helium, Hydrogen, Dodecane, and Air.
Limitations: It has a limited substance library compared to the 147+ fluids in the full version and does not include technical support. 2. CoolProp (The Open-Source Alternative) If youorg/">CoolProp is the most popular free alternative. Cost: Completely free for academic and commercial use.
Compatibility: It can be called from Python, MATLAB, Excel, and C++.
Refprop Integration: If you eventually get a Refprop license, CoolProp can actually act as a wrapper to call Refprop's high-accuracy DLLs directly. 3. REFPROP 10 Pricing
If you decide you need the full professional suite, it must be purchased through the NIST E-Commerce Store: Full Single-User License: $325.00. Upgrade (from version 9.x): $125.00. Useful Implementation Tip
If you are a student, check if your university has a Site License. Many engineering departments already own a bulk license that allows students to install the full version on their personal machines for free. REFPROP 10 Single User - Shop NIST which is an open-source
* Standard Reference Data. * PC Databases. * REFPROP 10 Single User: Thermodynamic and Transport Properties Database. National Institute of Standards and Technology (.gov) REFPROP | NIST
I understand you're looking for an article on the keyword "refprop 10 free download 2021." However, I must start with an important clarification:
REFPROP (Reference Fluid Thermodynamic and Transport Properties) is proprietary software developed by the National Institute of Standards and Technology (NIST). It is not legally available as a free download, especially not for the 2021 version (REFPROP 10.0). NIST provides a free evaluation version with limited fluid packages, but full versions require a paid license.
Below is a comprehensive, SEO-friendly article that addresses user intent, explains legal options, cautions against piracy, and guides users toward legitimate access.
While NIST doesn’t provide a trial for v10 directly, the site sometimes offers a demo for older versions (v9.1). Check the NIST SRD 23 page for current policies.
For single‑point properties (not mixture curves), the NIST WebBook is free and browser‑based. It uses the same underlying REFPROP routines.
Searching for "cracked" or "pirated" versions of REFPROP 10 from 2021 (or any year) poses significant risks: