problem linking REFPROP to MATLAB

Hello everyone, i have some question, may you guys help me?

so, i was trying to get the value of entalphy and entrophy using REFPROP (for my multiobjective optimization), here the code:

t5 = 6+273; %in kelvin
p5 = refpropm('P','T',t5,'Q',1,'r407c.mix');
h5 = refpropm('H','T',t5,'P',p5,'r407c.mix');
s5 = refpropm('S','T',t5,'P',p5,'r407c.mix');

but i got some error, said that;

Error using refpropm (line 267)

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

(x86)\REFPROP\fluids\c12.fld).

i dont why the matlab trying to open fluid's folder, i mean i was trying with mixture, but why it's not opening the mixture folder?

if i used the refrigerant type : R134A (this is a pure fluid not mixture like R407C) it's working but when i used mixture it's not working.

thank you.

[Walter Roberson]

Well, you can spend time debugging why it happens, or you can just go ahead and install the fluids properties.

https://www.mathworks.com/matlabcentral/answers/114691-unable-to-use-refprop-material-library

[Sarsarah]

i'm sorry but why i cant access this link https://trc.nist.gov/refprop/MINIREF/MINIREF.HTM ?

[Walter Roberson]

when I click on the link I get an HTML page that contains two links to .exe files. When I right click either exe link and ask to save link as, then I am able to download the code. What do you see when you click on the link?

[Sarsarah]

it said "this site can't be reached"

[Walter Roberson]

Do you have a refprop license ?

Answer 1

[Leonardo Sousa]

I'm facing the same exact problem. Have you found out a solution?