AEM, PEM, SOEC, ALE Efficiency, Water consumption, Specs

Green H2 Production Methods
Green Hydrogen OEMs

🟦 Alkaline Electrolyzer
John Cockerill | 1000 Nm³/h | 5 MW stack
- Nominal H2 flow = 1000 Nm³/h (2136 kg/day)
- Delivery pressure = 30 bar (g) no compression
- Stack consumption (DC) = 4.0 – 4.3 kWh/Nm³ H2
- Water conductivity required < 1 µS/cm
- Demineralized water consumption = 0.92 l/Nm³ H2
- Electrolyte = 30% KOH
- Plant footprint ≈ 400 m²
- Stack weight = 58 000 kg

🟦 Anion Exchange Membrane (AEM)
Enapter | AEM Flex 120
- H₂ nominal flow = 25 Nm³/h / 53.9 kg/24h
- H₂ outlet pressure =< 35 barg
- Nominal power consumption = 120 kW - 150 kW
- H₂O nominal consumption = 23 L/h Purified water
- H₂O inlet quality → Minimum ASTM D1193-06 Type IV or recommended Type II or Type III
- Operational flexibility = 12% – 100 % Of nominal H₂ flowrate
- Specific power consumption (Efficiency) = 4.8 kWh/Nm³H₂ - 53.3 kWh/kgH₂, 62.5% (LHV)
- Cold startup = 0 – 100% in 30 min
- Hot startup = 0 – 100% in 100 sec
- Weight ~ 3,700 kg

🟦 Solid Oxide Electrolyzer Cell (SOEC)
Bloom Energy | 1.8 MW module
- System Efficiency = 37.5 kWh/kg
- Warm Start-up = 10 min
- Power consumption:
H2 output (mt*/day) = 1.2
H2 output (kg/hr) = 48
H2 output (Nm3/hr) = 534
- Steam input:
Pressure = 4.5-5.5 bar (g)
Temperature = 150-200°C
Volume = 10.5L of H2O/kg of H2

🟦 Proton exchange membrane (PEM) electrolyzer
Nel Hydrogen | M5000
- Net Production Rate = 4,920 Nm3/h = 10,618 kg/24h
- Production Capacity Dynamic Range = 10 to l00%
- Average Power Consumption at Stack = 4.5 kWh/Nm3
- Delivery Pressure = 30 barg
- Feed Water Consumption = 0.9 I/Nm3

🟦 Other Green Hydrogen Production Methods:

- Molten Carbonate Electrolysis Cell (MCEC)
H2O+CO2,fe→H2+0.5 O2+CO2,oe

- Acidic/Alkaline Amphoteric
4OH− + 4H+ → 2H2O + O2 + 2H2

- Microbial Electrolysis Cells (MECs)
CH3COO− + 4H2O → 2HCO3− + H+ + 4H2

- Photoelectrochemical (PEC)
2H2O + 4H+ → 4H+ + O2 + 2H2

- E-TAC Hydrogen Electrolyser
It produces hydrogen and oxygen separately in the electrochemical and thermally activated chemical steps.

- Capillary-Fed Electrolysis cell (CFE)
2H2O (l) ⇌ 2H2 (g) + O2 (g) E0 = -1.229V

- SunHydrogen (PAH)
Each PAH nanoparticle is a microscopic machine comprised of numerous layers, allowing the solar electrolysis reaction.

- Photoelectrolysis Hydrogen Panel
Air + Sun + Solhyd Hydrogen Panel → H2 + O2

- Pyrolysis from biogas, biomass or landfill gas powered by renewable electricity
CH4 → 2H2 + C

🟦 OEMs:
- Cummins
- H2EG
- ITM Power
- Giner ELX
- NelHydrogen
- Enapter
- Areva H2Gen
- Green H2 systems
- Green Hydrogen
- IPS-FEST
- Kraftanlagen Munchen
- Thyssenkrupp Uhde
- Hoeller Electrolyzer
- Siemens Energy
- HyGear
- McPhy
- PERIC
- Suzhou Jingli Hydrogen
- CETH2
-IMI Vivo
-H2GREEM
-HydrogenPro
-Sunfire
-Bloom Energy
-John Cockrill
-Solhyd
-Hysata