If you’ve ever worked in chemical engineering or HVAC design, you’ve likely encountered (Reference Fluid Properties). Developed by the National Institute of Standards and Technology (NIST), it is the gold standard for calculating the thermophysical properties of fluids.
While the full version of REFPROP 9.1 is a paid resource, NIST offers a student version known as REFPROP Mini . refprop 91 free
The short answer is NIST is a U.S. government agency, but it is required by law to recover the costs of developing and distributing its Standard Reference Databases (SRDs). 1. The Risk of "Cracked" Versions If you’ve ever worked in chemical engineering or
Corrupted property libraries that can lead to dangerous engineering miscalculations. refprop 91 free