Gas Properties Block - Corresponding REFPROP Variable Names

Hi,

I'm trying to populate the Gas Properties block in Simscape from REFPROP (using the approach provided by MATLAB here: MATLAB Interface for REFPROP and CoolProp - File Exchange - MATLAB Central).

However, there are some complexities in the naming of the variables that make populating the block difficult. When I call REFPROP, I use these variables from REFPROP (T,P,D,S,H,CP,VIS,TCX,KKT, and BETA) for the Matlab Gas Properties block variables. ARe these REFPROP names the correct ones to be calling? The last two are particularly confusing since alpha and beta can be used for each other in various documents...very strange.

I just want to make sure i"m calling the correct REFPROP variables for each MATLAB Gas Properties block variable.

Any assistance is appreciated.

[Torsten]

I don't understand what you mean when you say

The last two are particularly confusing since alpha and beta can be used for each other in various documents

[Darryl]

Alpha is the most common notation for the expansion coefficient (see https://en.wikipedia.org/wiki/Thermal_expansion#Coefficients).

Not sure why REFPROP chose BETA..assuming BETA is referencing isobaric thermal expansion coefficient (and is what is cald volume expansivity BETA in refprop).

So, it's a bit confusing. I"m hoping someone who takes REFPROP data and incorporates it into the Gas Properties block in Simscape might be able to clarify the appropriate REFPROP variables that match up with the variables in the Gas Properties block.