Unable to use REFPROP material library

I am trying to run a code however i am facing an error:

Error using refpropm

[SETUP error 101] error in opening file for component #-22; filename = (C:\Program

Files\REFPROP\fluids\c12.fld).

Error in DEWPOINT (line 54)

C_pair(j,i)=refpropm('C','T',Tpa_avg(j,i),'P',P_a,'AIR.MIX'); %specific heat of air in J/kgK

please provide a solution. Also i am a complete novice so it will be helpful if you could explain in detail.

thankyou

Answer 1

[Walter Roberson]

That version of refprop is no longer supported

https://www.mathworks.com/matlabcentral/answers/1711870-i-am-trying-to-use-matlab-with-refprop-but-it-shows-setup-error-101-error-in-opening-file-for-com#answer_1327704

[Sudarshan]

Hii ,actually i tried performing the same code using 'co2' instead of " Air.ppf" and the code didnt show any error it is only showing error for AIR.ppf