Problem linking RefProp to MatLab

Hi

I am trying to connect RefProp(V9.1) to MatLab(V2016b). I have followed two guides ( Here from GitHub and Here from NIST). I have downloaded the files:

• refpropm.m
• REFPRP64.dll
• refprop.h
• REFPRP64_thunk_pcwin64.dll
• rp_proto64.m

I have tried having them both in the RefProp directory and in a separate folder, but to no avail. I linked MatLab to the folders when I was testing. I always get the same error.

>> testVal=refpropm('T', 'P', 101.325, 'Q', 0, 'water')
Error using loadlibrary
Too many input arguments.
Error in ==>@()rp_proto64(BasePath) at 211
There was an error running C:\Program Files (x86)\REFPROP\refpropm.m.
Run @()rp_proto64(BasePath) from the command line to reproduce the error and fix it.

Error in refpropm (line 227)
    [notfound,warnings]=loadlibrary(strcat(BasePath,dllName),prototype,'alias',libName);

Caused by:
    Error using rp_proto64
    Too many input arguments.

Has anyone had the same error and solved it? Any suggestions?

Thank you for any help

[Dayle Alexander]

Hello. Did you ever get this issue resolved? I am having the same error.

[Jonas Hilpert]

me too. Did u fix the problem already?

[Vijay Nishad]

Thanks! Check the video of muon_neutrino channel " How to link refprop with matlab "

It is easy.

[priyanshu chhabra]

Error using loadlibrary

There was an error loading the library "C:\Program Files (x86)\REFPROP\REFPRP64.dll"

Undefined function 'rp_proto64' for input arguments of type 'char'.

Error in refpropm (line 227)

[notfound,warnings]=loadlibrary(strcat(BasePath,dllName),prototype,'alias',libName);

Caused by:

Undefined function 'rp_proto64' for input arguments of type 'char'.

this error it is showing, help me out

[Cahya Amalinadhi Putra]

@priyanshu chhabra , I experienced the same problem here. You should move the 'rp_proto64.m' to the same directory as your <working>.m file. Then try to run the <working>.m again. You should not experience the error again.

Answer 1

[Li Yucen]

1.Try to upload the Matlab and Refprop to latest version, I used 10.0 NIST and R2018b MTABLAB.

2. Involve all of them. Try to google and download the REFPROP.DLL, REFPROP64.DLL,REFPROP64.LIB, and five functions.

[yuer xiao]

大神，这几个文件你能发我一份吗？[e-mail]谢谢！

refprop64.dll, REFPRP64_thunk_pcwin64.dll， refpropm.m， rp_proto64.m