Could not load properties from Refprop in EES

[chienfm]

Description

Hello,

I have installed the coolprop v6.1 and EES 9.2. When querying the properties of refrigerant in coolprop, the function works well. But when querying the properties from Refprop (v9.0), EES shows error

Initialize failed for backend: "REFPROP", fluid: "WATER" fractions "[ 1.0000000000 ]"; error: Could not load these fluids: WATER : PropsSI("D","P",101325,"T",300,"REFPROP::WATER").

However, the wrapper is working well in python when querying the properties from REFPROP. Could you please give me any recommendation?

Thank you!
Nguyen.

Steps to Reproduce

1. Install REFPROP, add Path.
2. Install EES
3. Install Coolprop v6.1.0 wrapper for EES.
4. In EES, the command D = PropsSI('D','P',101325,'T',300,'Water') is fine. However, the command D = PropsSI('D','P',101325,'T',300,'REFPROP::Water') gets error as I demonstrated above.
5. Install wrapper for python using pip. In python, the above command works fine.

Versions

CoolProp Version: 6.1.0
Operating System and Version: Windows 10
Access Method: EES wrapper.

[ibell]

Did you read the instructions page for REFPROP completely: http://www.coolprop.org/coolprop/REFPROP.html ? For REFPROP 9.1, you need to copy the folder from c:\Program Files (x86)\REFPROP to c:\Program Files\REFPROP. There was a bug in REFPROP that it didn't also look in the c:\Program Files (x86)\REFPROP folder for fluid files

…

On Mon, Jul 9, 2018 at 4:20 AM, chienfm ***@***.***> wrote: Description Hello, I have installed the coolprop v6.1 and EES 9.2. When querying the properties of refrigerant in coolprop, the function works well. But when querying the properties from Refprop (v9.1), EES shows error Initialize failed for backend: "REFPROP", fluid: "WATER" fractions "[ 1.0000000000 ]"; error: Could not load these fluids: WATER : PropsSI("D","P",101325,"T",300,"REFPROP::WATER"). However, the wrapper is working well in python when querying the properties from REFPROP. Could you please give me any recommendation? Thank you! Nguyen. Steps to Reproduce 1. Install REFPROP, add Path. 2. Install EES 3. Install Coolprop v6.1.0 wrapper for EES. 4. In EES, the command D = PropsSI('D','P',101325,'T',300,'Water') is fine. However, the command D = PropsSI('D','P',101325,'T', 300,'REFPROP::Water') gets error as I demonstrated above. 5. Install wrapper for python using pip. In python, the above command works fine. Versions *CoolProp Version:* 6.1.0 *Operating System and Version:* Windows 10 *Access Method:* EES wrapper. — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#1715>, or mute the thread <https://github.com/notifications/unsubscribe-auth/ABxha6abch9ULZTUo5G627-kMn74bzoiks5uEy5WgaJpZM4VHcyM> .

[chienfm]

Dear Dr. Ibell,

Thank you so much for your answers and I'm sorry for my late reply. Now I can run the sample file for EES and returns the value from Refprop. However, the function does not work completely. This PropSI function call Tcrit works fine but the other such as:
T_crit_refprop = PropsSI('Tcrit','P',100,'Q',0,'REFPROP::R410A') returns value
but
T_refprop = PropsSI('T','P',100000,'Q',0,'REFPROP::R410A') return error "An unresolvable error was encountered while trying to access COOLPROP_EES. Check to ensure that the inputs to this external routine are correct."

Could you give me any recommendation?

Thank you so much!

Regards,
Nguyen Chien.

[ibell]

How about T_refprop = PropsSI('T','P',101325,'Q',0,'REFPROP::WATER') ? That's always my first test. What do you get with that call if you use CoolProp instead? Does it work?

…

On Wed, Aug 15, 2018 at 9:07 PM, chienfm ***@***.***> wrote: Dear Dr. Ibell, Thank you so much for your answers and I'm sorry for my late reply. Now I can run the sample file for EES and returns the value from Refprop. However, the function does not work completely. This PropSI function call Tcrit works fine but the other such as: T_crit_refprop = PropsSI('Tcrit','P',100,'Q',0,'REFPROP::R410A') returns value but T_refprop = PropsSI('T','P',100000,'Q',0,'REFPROP::R410A') return error "An unresolvable error was encountered while trying to access COOLPROP_EES. Check to ensure that the inputs to this external routine are correct." Could you give me any recommendation? Thank you so much! Regards, Nguyen Chien. — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#1715 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/ABxha6FF-qZ_PmcCcjjI7ssJ3VBqU6zcks5uROHpgaJpZM4VHcyM> .

[chienfm]

Thank you for your reply.

The function T_refprop = PropsSI('T','P',101325,'Q',0,'REFPROP::WATER') also returns the same error "An unresolvable error was encountered while trying to access COOLPROP_EES. Check to ensure that the inputs to this external routine are correct."

But T_refprop = PropsSI('Tcrit','P',101325,'Q',0,'REFPROP::WATER') returns value (647.1).

[chienfm]

Finally, the wrapper is now working with CoolProp version 5.08.

[ibell]

Weird. That makes no sense since the EES code hasn't been modified in like forever

[chienfm]

I have no idea. Also, for using CoolProp.Lib for EES versions older than 9.478, I slightly modified some lines as in attachment.

Thank you so much!

CoolPropLib _modified.txt