Two-Phase Fluid Properties (2P) for Helium

I have installed CoolProp and it woks fine for the fluid r134a (https://se.mathworks.com/help/physmod/simscape/ref/twophasefluidtables.html). It also returns single values for Helium.

However, when using twoPhaseFluidTables for Helium an error occurs:

HeTables = twoPhaseFluidTables([-27.2,20000],...[0.01,2.27],25,25,50,'Helium','py.CoolProp.CoolProp.PropsSI')

Error using twoPhaseFluidTables>coolpropFluidProperties (line 899)

CoolProp failed to return fluid properties at P = 0.30942 MPa, U = 9.1303 kJ/kg.

Error in twoPhaseFluidTables>@(p,u)coolpropFluidProperties(p,u,substance,coolpropFun) (line 789)

fluidProperties = @(p, u) coolpropFluidProperties(p, u, substance, coolpropFun);

Error in twoPhaseFluidTables (line 215)

= fluidProperties(p(j), u_sat_liq(j));

Error in CoolProp (line 5)

HeTables = twoPhaseFluidTables([-27.2,20000],[0.01,2.27],25,25,50,...

Caused by:

Error using CoolProp/CoolProp.__Props_err2 (line 346)

Python Error: ValueError: PropsSI failed ungracefully :: inputs

were:"L","P",3.0941899477420672e+05,"U",9.1303102201927686e+03,"Helium"; please file a ticket at

https://github.com/CoolProp/CoolProp/issues

Is there something wrong in the limits / how the twoPhaseFluidTables should be used correctly?

Thanks Juan!

Juan Sagarduy 2021-8-17

Hello Saara,

I believe we need to look into this more closely. I haven't used the two phase fluid table often. I propose that we have a Teams session to explore this and see what a solution could be.

is this adress correct to send an invitation: saara.vaananen@student.tut.fi

Regards/Juan

Yangyang 2024-5-13