Refprop mixture with 4 components error

[mayersre]

The code below fails for the Refprop mix R449A with :

ValueError: [SETUP error 101] error in opening file for component # 1; filename = (/opt/refprop/fluids/R32.ppf

the file should be R32.fld

Linux ubuntu 14.04 / Win 8.1 / Py 3.4 / Coolprop 5.0.3 and 5.0.4. Before Version 5.0.3 the errors were different on Linux and Windows.

regards
Reiner

Code:
import CoolProp
from CoolProp.CoolProp import PropsSI
print(CoolProp.version)

R407F='REFPROP-MIX:R32[0.473194694453358]&R125[0.205109095413331]&R134a[0.321696210133311]'
R422D='REFPROP-MIX:R125[0.596291711495645]&R134A[0.339399053279791]&ISOBUTAN[.064309235224564]'
R430A='REFPROP-MIX:R152a[0.735906531919507]&ISOBUTAN[0.264093468080493]'
R449A='REFPROP-MIX:R32[0.407364566995509]&R125[0.179481207732065]&R1234YF[0.193480840388364]&R134A[0.219673384884062]'

print(PropsSI("H","T",273.15,"Q",0,R407F))
print(PropsSI("H","T",273.15,"Q",0,R422D))
print(PropsSI("H","T",273.15,"Q",0,R430A))
print(PropsSI("H","T",273.15,"Q",0,R449A))

[jowr]

Thanks for reporting this interesting error. When loading REFPROP fluids, we try to find the fluid files by trying different endings. The order is std::string endings[number_of_endings] = {"", ".FLD", ".fld", ".PPF", ".ppf"};, which means that it will always fail with the .ppfif the files do not exist. Are you 100% sure that you have /opt/refprop/fluids/R32.fld in your file system?

[jowr]

It is also interesting that it fails the second time. Just noticed that R32 also is part of another mixture. Stay tuned.

[mayersre]

Yes, on Linux R32.fld and R32.FLD ... on windows only R32.fld, but file
is there

Am 11.12.2014 um 10:17 schrieb Jorrit Wronski:

It is also interesting that it fails the second time. Just noticed
that R32 also is part of another mixture. Stay tuned.

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#342 (comment).

[ibell]

1. What gitrevision are you using? We fixed some bugs along the way with REFPROP. You can get the git revision from

import CoolProp
CoolProp.__gitrevision__

1. Try using all uppercase for all components when using REFPROP.

[ibell]

When I run that code, this is what I get on windows:

5.0.4
200996.831543
203534.220914
216192.447385
Traceback (most recent call last):
  File "trash2.py", line 13, in <module>
    print(PropsSI("H","T",273.15,"Q",0,R449A))
  File "CoolProp.pyx", line 204, in CoolProp.CoolProp.PropsSI (CoolProp\CoolProp.cpp:14608)
  File "CoolProp.pyx", line 236, in CoolProp.CoolProp.PropsSI (CoolProp\CoolProp.cpp:14403)
  File "CoolProp.pyx", line 173, in CoolProp.CoolProp.__Props_err2 (CoolProp\CoolProp.cpp:13248)
ValueError: [SETUP warning -117] No mixture data are available for one or more binary pairs in the specified mixture. The mixing parameters have been estimated. : PropsSI("H","T",273.15,"Q",0,"REFPROP-MIX:R32[0.407364566995509]&R125[0.179481207732065]&R1234YF[0.193480840388364]&R134A[0.219673384884062]")

[ibell]

Are you sure you are using the most up-to-date code?

[ibell]

Also, the standard syntax for calling REFPROP in v5 is 'REFPROP::' plus the fluid(s) name(s), though we do support 'REFPROP-' and 'REFPROP-MIX:' for backwards compatibility reasons

[mayersre]

Hi Ian,

added gitrevision to output, error 101 remains. I get the same error
when I add a colon too much to
another REFPROP refrigerant, like R430A.

I use MIX in the name for autoscaling of lines in my diagrams. Is there
an equivalent for a triple point
temperature available in v 5? I approximate the lowest possible
temperature before I use it in the plot
to avoid errors.

Reiner

code:
import CoolProp
from CoolProp.CoolProp import PropsSI
print('Coolprop Version : ',CoolProp.version)
print('GIT revision : ',CoolProp.gitrevision)

R407F='REFPROP::R32[0.473194694453358]&R125[0.205109095413331]&R134a[0.321696210133311]'
R422D='REFPROP::R125[0.596291711495645]&R134A[0.339399053279791]&ISOBUTAN[.064309235224564]'
R430A='REFPROP::R152a[0.735906531919507]&ISOBUTAN[0.264093468080493]'
R449A='REFPROP::R32[0.407364566995509]&R125[0.179481207732065]&R1234YF[0.193480840388364]&R134A[0.219673384884062]'

print('R407F enthalpy 0°C liquid : ',PropsSI("H","T",273.15,"Q",0,R407F))
print('R422D enthalpy 0°C liquid : ',PropsSI("H","T",273.15,"Q",0,R422D))
print('R430A enthalpy 0°C liquid : ',PropsSI("H","T",273.15,"Q",0,R430A))
print('R449A enthalpy 0°C liquid : ',PropsSI("H","T",273.15,"Q",0,R449A))

result:
Coolprop Version : 5.0.4
GIT revision : 8cef862
R407F enthalpy 0°C liquid : 200996.83154258266
R422D enthalpy 0°C liquid : 203534.22091351735
R430A enthalpy 0°C liquid : 216192.44738457337
Traceback (most recent call last):
File "/home/mayers/workspace/Dampftafeln/r449test.py", line 14, in

print('R449A enthalpy 0°C liquid :
',PropsSI("H","T",273.15,"Q",0,R449A))
File "CoolProp.pyx", line 204, in CoolProp.CoolProp.PropsSI
(CoolProp/CoolProp.cpp:14608)
File "CoolProp.pyx", line 236, in CoolProp.CoolProp.PropsSI
(CoolProp/CoolProp.cpp:14403)
File "CoolProp.pyx", line 173, in CoolProp.CoolProp.__Props_err2
(CoolProp/CoolProp.cpp:13248)
ValueError: [SETUP error 101] error in opening file for component # 1;
filename = (/opt/refprop/fluids/R32.ppf

Am 12.12.2014 um 06:19 schrieb Ian Bell:

Also, the standard syntax for calling REFPROP in v5 is 'REFPROP::'
plus the fluid(s) name(s), though we do support 'REFPROP-' and
'REFPROP-MIX:' for backwards compatibility reasons

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#342 (comment).

[ibell]

This bug has been fixed - there is a warning on the last mixture because
there are missing binary pair parameters, they are estimated. For now we
silently ignore these warnings.

On Fri, Dec 12, 2014 at 12:30 PM, mayersre notifications@github.com wrote:

Hi Ian,

added gitrevision to output, error 101 remains. I get the same error
when I add a colon too much to
another REFPROP refrigerant, like R430A.

I use MIX in the name for autoscaling of lines in my diagrams. Is there
an equivalent for a triple point
temperature available in v 5? I approximate the lowest possible
temperature before I use it in the plot
to avoid errors.

Reiner

code:
import CoolProp
from CoolProp.CoolProp import PropsSI
print('Coolprop Version : ',CoolProp.version)
print('GIT revision : ',CoolProp.gitrevision)

R407F='REFPROP::R32[0.473194694453358]&R125[0.205109095413331]&R134a[0.321696210133311]'

R422D='REFPROP::R125[0.596291711495645]&R134A[0.339399053279791]&ISOBUTAN[.064309235224564]'
R430A='REFPROP::R152a[0.735906531919507]&ISOBUTAN[0.264093468080493]'

R449A='REFPROP::R32[0.407364566995509]&R125[0.179481207732065]&R1234YF[0.193480840388364]&R134A[0.219673384884062]'

print('R407F enthalpy 0°C liquid : ',PropsSI("H","T",273.15,"Q",0,R407F))
print('R422D enthalpy 0°C liquid : ',PropsSI("H","T",273.15,"Q",0,R422D))
print('R430A enthalpy 0°C liquid : ',PropsSI("H","T",273.15,"Q",0,R430A))
print('R449A enthalpy 0°C liquid : ',PropsSI("H","T",273.15,"Q",0,R449A))

result:
Coolprop Version : 5.0.4
GIT revision : 8cef862
R407F enthalpy 0°C liquid : 200996.83154258266
R422D enthalpy 0°C liquid : 203534.22091351735
R430A enthalpy 0°C liquid : 216192.44738457337
Traceback (most recent call last):
File "/home/mayers/workspace/Dampftafeln/r449test.py", line 14, in

print('R449A enthalpy 0°C liquid :
',PropsSI("H","T",273.15,"Q",0,R449A))
File "CoolProp.pyx", line 204, in CoolProp.CoolProp.PropsSI
(CoolProp/CoolProp.cpp:14608)
File "CoolProp.pyx", line 236, in CoolProp.CoolProp.PropsSI
(CoolProp/CoolProp.cpp:14403)
File "CoolProp.pyx", line 173, in CoolProp.CoolProp.__Props_err2
(CoolProp/CoolProp.cpp:13248)
ValueError: [SETUP error 101] error in opening file for component # 1;
filename = (/opt/refprop/fluids/R32.ppf

Am 12.12.2014 um 06:19 schrieb Ian Bell:

Also, the standard syntax for calling REFPROP in v5 is 'REFPROP::'
plus the fluid(s) name(s), though we do support 'REFPROP-' and
'REFPROP-MIX:' for backwards compatibility reasons

—
Reply to this email directly or view it on GitHub
#342 (comment).

—
Reply to this email directly or view it on GitHub
#342 (comment).