PEM Fuel Cell with pneumatic controlled contact pressure
active area:50cm²
Media supply:
cathode: humidified air
cathode conversion: 12.5 – 33 % (stoichiometry 3 to 8)
humidification medium: deionized / demineralized water (conductivity < 1 µS/cm)
anode: hydrogen (purity 3.5 or better)
anode conversion: 20 – 40 % (stoichiometry 2.5 to 5)
cooling: demineralized water (conductivity < 5 µS/cm)
open circuit voltage: approx. 0.95 VDC
DC power: 0 to approx. 30 W/cell (depending on operating and material conditions)
DC nominal power: ~ 18 W/cell at U EZquer = 0.730 V (depending on operating and material conditions)
operating temperature: 10 to 80 °C at the stack cooling water outlet
nominal temperature: 70 °C
operating pressure: close to ambient pressure up to 3 bar abs
Volume flows / cell:
hydrogen: min. 0.4 to max. 2.3 Nl/min/cell (stoichiometry 4.5)
air: min. 1.2 to max. 7.5 Nl/min/cell (stoichiometry 6.0)
cooling water flow rate: min. 0.05 Nl/min