.FuelCellLib.Basics.vc_dif

Information

vc_dif-Control Volume


The balance of oxygen is shown in next eq..

The balance of steam water is shown in next eq., the 2nd term in the right show the balance ratio of liquid water and steam water.

The balance of liquid water is shown in next eq., the 2nd term in the right show tthe balance ratio of liquid water and steam water.

These equations show the variables that are part in the liquid and steam water balance.

The maximum water load in diffusion layer is shown next and it depends on the density of water and the solid and the volume of solid.

The pore volume is the blank space that doesn't fill of liquid water and solid volume.

Parameters

NameDefaultDescription
av Specific condensation surface [m2/m3]
b Material transfer coeficient [m/s]
Es Volumetric fraction of solid
T Operation temperature of active layer [K]
da Thickness of transport phenomena [m]
posat Reference Saturation pressure [Pa]
Tosat Reference Saturation temperature [K]
ros Density of the solid [kg/m3]
roh2ol Density of water [kg/m3]


References


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