HOW TO WORK WITH THE FILES:

1. Before, You start/run the code, make sure that you have linked refprop with matlab properly.

2. You have to save both the file in same folder and DONOT change file name of function file "refpropm"
else, matlab won't run further and result in errors.
For more detail YT video link : https://www.youtube.com/watch?v=YjVQdAm0nZ0
 
Note: for proper linking of refprop with matlab.
Link for refprop connection file :  https://trc.nist.gov/refprop/LINKING/Linking.htm#MatLabApplications
For more detail YT video link : https://www.youtube.com/watch?v=uTn-IUXTGc4