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Home All issues Volume 80 (2025) Sci. Tech. Energ. Transition, 80 (2025) 5 Full HTML

Table 4

System operation parameters.

Parameter Description Value Unit
Mv Vapor Molar Mass 18 × 10−3 kg mol−1
Ma,atm Air Molar Mass 29 × 10−3 kg mol−1
M O 2 $ {M}_{{\mathrm{O}}_2}$ Oxygen Molar Mass 32 × 10−3 kg mol−1
M N 2 $ {M}_{{\mathrm{N}}_2}$ Nitrogen Molar Mass 28 × 10−3 kg mol−1
kca,in Cathode Inlet Orifice Constant 0.36 × 10−5 kg s−1 pa−1
y O 2 , atm $ {y}_{{\mathrm{O}}_2,\mathrm{atm}}$ Oxygen Mole Fraction 0.21 –
Vca Cathode Volume 0.01 m3
Vsm Supply Manifold Volume 0.02 m3
Patm Atmospheric Pressure 101,325 Pa
Psat Saturation Pressure 465,327.41 Pa
Tatm Atmospheric Temperature 298.15 K
Tst Stack Temperature 353.15 K
R Universal Gas Constant 8.31 J mol−1 K−1
CD Cathode Outlet Throttle Discharge Coefficient 0.012 –
Cp Constant Pressure Specific Heat of Air 1004 J mol−1 K−1
F Faraday Number 96,485 C mol−1
n Number of Cells 381 –
AT Cathode Outlet Throttle Area 0.002 m2
γ Ratio of Specific Heat of Air 1.40 –
ϕatm Average Ambient Air Relative Humidity 0.50 –

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