.FuelCellLib.Basics.vc_mem

Information

vc_mem-Control Volume


The balance of steam water is shown in next eq., the 2nd term in the right show the water production in electrochemical reaction and the 3rd term 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 membrane is shown next and it depends on the density of water and the membrane and the volume of electrolyte.

The pore volume is the blank space that doesn't fill the electrolyte

Parameters

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


References


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