Binary Mixtures using coolprop in Matlab

Dear All,

I need your support to know how can I create a refrigerant mixture in matlab using coolprop libraryand I'm already uploaded coolprop library into matlab:

I need to to know the specs, of this mixture,

Composition: 31.1% R1234yf, 68.9% R32

Regards

[Star Strider]

I do not have Simscape (or Simscape Fluids), so I am not posting this as an answer. Searching on ‘coolprop’ brings up CoolProp to the Rescue, and searching on ‘refrigirant mixture’ brings up these results.

Answer 1

[Yifeng Tang]

Looks like you can use the MATLAB wrapper for Coolprop to define a mixture and query the properties, like below:

py.CoolProp.CoolProp.apply_simple_mixing_rule('R1234yf','R32','linear')
py.CoolProp.CoolProp.PropsSI('Dmass','T',300,'P',101325,'R1234yf[0.311]&R32[0.689]')

Reference:

http://www.coolprop.org/fluid_properties/Mixtures.html

http://www.coolprop.org/coolprop/wrappers/MATLAB/index.html#matlab

[Hussein]

Please, this message error appear:

Error using CoolProp/CoolProp.apply_simple_mixing_rule

Python Error: RuntimeError: CAS pair(75-10-5,754-12-1) already in binary interaction map; considering

enabling configuration key OVERWRITE_BINARY_INTERACTION

Error in CoolProp/CoolProp.apply_simple_mixing_rule (line 317)

[Yifeng Tang]

I think that's because the mixture was defined once already in CoolProp. I got the same message if I try to run the apply_simple_mixing_rule code twice. You can comment out that line and try again, or restart MATLAB :)