Green hydrogen & ammonia, modeled right

HYSYS was built for oil & gas. MaximaLabs ships the new-energy unit ops and workflows you actually need.

Nernst + Butler-Volmer polarization•PEM, alkaline & SOEC presets•Faraday's-law H₂ rate + crossover purity

Water

Pump

PEM cell

H₂

The actual dark-mode canvas: water pressurized and split in a rigorous PEM cell — the same P&ID symbols you edit in the app.

Fork this model →

Rigorous cell electrochemistry

Every cell is resolved from first principles — Nernst reversible voltage, Butler-Volmer activation, ohmic and concentration overpotentials — so you can trade current density against efficiency, not guess.

E_{rev} = E^\circ + \tfrac{RT}{2F}\,\ln\!\left(p_{H_2}\,p_{O_2}^{1/2}\right)

\eta_{act} = \tfrac{RT}{\alpha F}\,\operatorname{asinh}\!\left(\tfrac{i}{2\,i_0}\right)

V_{cell} = E_{rev} + \eta_{act} + \eta_{ohm} + \eta_{conc}

\dot n_{H_2} = \eta_F\,\tfrac{I}{2F},\qquad \eta_F = 1 - i_{cross}/i

Unit ops shipped for this vertical

Pump

Raises liquid pressure; a flow-dependent head curve drives it in pressure-driven mode.

Run preset →

Rigorous electrolyzer

Nernst + Butler-Volmer cell voltage; PEM, alkaline, and SOEC presets.

Run preset →

Live plant integration

Stream stack current, cell voltage, and H₂ purity tags from your electrolyzer's OPC-UA server into this flowsheet's twin comparison — deviations from the solved polarization curve are flagged automatically.

See the Digital Twin platform →

Try it yourself

✓PEM electrolyzer sizing & efficiency
✓Green-ammonia synthesis loop (N₂ + 3H₂ ⇌ 2NH₃)
✓Energy & carbon footprint per stream and unit

10 MW PEM electrolyzer loop

Open template →

View model How-to guide

Green ammonia synthesis