IsFluidType function

[abahman]

Hi,

I'm working on ACHP model with CoolProp 5.x, and IsFluidType function is intensively used in the model. If there is no alternative, could you please re-implement the function ?

Thank you

[abahman]

Hi,

I guess it can be done without re-implementing IsFluidType. Correct me if I'm wrong.
Since the backend "INCOMP" is mostly for Brine and mixture fluids, I can replace the current If statement (if IsFluidType(Ref,'Brine')==:) in ACHP model with (if 'INCOMP' in Ref:).
Can that works ?

[ibell]

Yes, but it doesn't separate pure and pseudo-pure fluids

On Mon, Mar 23, 2015 at 10:39 PM, Ammar Bahman notifications@github.com
wrote:

Hi,

I guess it can be done without re-implementing IsFluidType. Correct me if
I'm wrong.
Since the backend "INCOMP" is mostly for Brine and mixture fluids, I can
replace the current If statement (if IsFluidType(Ref,'Brine')==:) in ACHP
model with (if 'INCOMP' in Ref:).
Can that works ?

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#552 (comment).

[ibell]

See https://github.com/ibell/coolprop/blob/c67ecc570e545d624c18feaf2a01e48b63ae1501/CoolProp/CoolProp.cpp#L446 and convert to CP v5 style

[abahman]

It has the same style as before. Thank you

[ibell]

That, in fact, is the old code :)

On Fri, Mar 27, 2015 at 12:38 AM, Ammar Bahman notifications@github.com
wrote:

It has the same style as before. Thank you

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#552 (comment).

[ibell]

Ok, new idea. I think it makes more sense to implement the function in ACHP, so what I propose is that I add an output to get_fluid_param_string that returns "true" if it is a pure fluid, or "false" if it is a pseudo-pure fluid. Now that you pretty much have to provide the backend in v5, that simplifies determination of the fluid type.

[ibell]

Ok, now that you can differentiate between pure and pseudo-pure fluids with the HEOS backend, I think you have all you need to re-implement the functionality of IsFluidType in ACHP. In the end, I like this solution better than writing a hacky fix in CoolProp.