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MODE = TRN (90)
Note that the inputs and outputs will be automatically converted from and to the unit system defined in EES if the $ConvertEESREFPROPUnits directive is used in the EES program. If EES is configured in SI units, the units of viscosity will be Pa-s. The units shown in the following description apply for the inputs and outputs apply when the $ConvertEESREFPROPUnits directive is not used.
Description: Calculate transport properties for given temperature and density
In1 = Temperature in K
In2 = Density in kmol/m3
In3 = mole fraction of first component (skip for pure fluid)
...
InN = mole fraction of next to last component
Note: If the /mass flag is provided with the $CONVERTEESREFPROPUNITS directive, mass fractions should be provided instead of mole fractions.
Out1 = Viscosity in µPa-sec
Out2 = Thermal conductivity in W/m-K
Example 1:
TRN=90 "mode for transport properties"
T=350 [K] "temperature"
rho=13.1 [kmol/m^3] "density"
mf=0.3 "mole fraction"
Call ees_refprop('R32+R134a', TRN, T, rho, mf : Visc, Cond)
{Solution:
Cond=0.09088 [W/m-K]
Visc=161.2 [ µPa-sec]
}
Example 2:
$UnitSystem SI K kPa molar
$ConvertEESREFPROPUnits
TRN=90 "mode for transport properties"
T=350 [K] "temperature"
rho=13.1 [kmol/m^3] "density"
mf=0.3 "mole fraction"
Call ees_refprop('R32+R134a', TRN, T, rho, mf : Visc, Cond)
{Solution:
Cond=0.09088 [W/m-K]
mf=0.3
rho=13.1 [kmol/m^3]
T=350 [K]
TRN=90
Visc=0.0001612 [Pa-s]
}
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