Ask for an error "The following kwargs seems out of reasonable range: {}."

[MatthieuPicard]

Hello !

I try to use the ccp-performance package but when run the code bellow, I have a problem with the creation of the point :

"The following kwargs seems out of reasonable range: {}."

I put bellow my code and the error that my conda environement on PyCharm return.
For the information I am trying to modelise a compressor with the air as a fluid. I also use CoolProp and not REFPROP.

Thanks a lot for your help.

The code :

import ccp

ccp.config.EOS = "HEOS"
ccp.config.FLUID_BACKEND = "CoolProp"
ccp.config.ALTERNATIVE_REFPROP_PATH = None

Q_ = ccp.Q_

fluid = {
"CarbonDioxide": 0.8,
"Nitrogen": 0.2,
}

ps = Q_(2.5, 'bar') # Pression réduite
Ts = Q_(300, 'K')

try:
suc0 = ccp.State(fluid=fluid, p=ps, T=Ts, phase="gas")
disch0 = ccp.State(fluid=fluid, p=Q_(5.0, 'bar'), T=Q_(330, 'K'), phase="gas") # ΔT réduit
disch1 = ccp.State(fluid=fluid, p=Q_(4.5, 'bar'), T=Q_(320, 'K'), phase="gas")

print(suc0)
print(disch1)
print(disch0)

point0 = ccp.Point(
    suc=suc0,
    disch=disch0,
    speed=Q_(7000, 'RPM'),  # Vitesse réduite
    flow_m=Q_(34000, 'kg/hr'),
    b=0.0285,
    D=0.365
)
point1 = ccp.Point(
    suc=suc0,
    disch=disch1,
    speed=Q_(7000, 'RPM'),
    flow_m=Q_(32000, 'kg/hr'),
    b=0.0285,
    D=0.365
)

imp = ccp.Impeller([point0, point1])

imp.head_plot()
imp.disch.T_plot()

except Exception as e:
print(f"\n Échec : {str(e)}")

and the error :

Échec : Could not calculate point with ccp.Point(**{'suc': ccp.State(p=Q_("250000 Pa"), T=Q_("300 K"), fluid={"CO2": 0.80000, "NITROGEN": 0.20000}), 'disch': ccp.State(p=Q_("500000 Pa"), T=Q_("330 K"), fluid={"CO2": 0.80000, "NITROGEN": 0.20000}), 'flow_m': Q_(9.44444444, 'kilogram / second'), 'speed': Q_(733.038286, 'radian / second')}).
The following kwargs seems out of reasonable range: {}.

Thanks a lot and have a nice day.

[raphaeltimbo]

Hi @MatthieuPicard !
This was actually a bug introduced in v0.3.17 related to the selection of the phase.

We were getting the following error from CoolProp:
ValueError: phase is invalid in calc_hmolar

I have just altered the code and released v0.3.18.

If you could please update your ccp version with:
pip install -U ccp-performance

Thank you for sending the question and let me know if you have other problems.