Electrolyzer simulation

All unit operations

Electrolyzer simulation

water feed -> H2 (green hydrogen)

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Governing equations

The exact equations the solver works for a electrolyzer — the same math shown in the app's "Theory" panel, not a black box.

\mathrm{H_2O} \rightarrow \mathrm{H_2} + \tfrac{1}{2}\mathrm{O_2}

\dot n_{H_2} = \frac{P\,\eta}{\Delta H_{split}}

\dot n_{O_2} = \tfrac{1}{2}\,\dot n_{H_2}

$P$: electrical power input [W]
$\eta$: efficiency [0..1]
$\Delta H_{split}$: energy to split one mole of water [J/mol]
$\dot n_{H_2}, \dot n_{O_2}$: product molar flows [mol/s] — fixed at 2:1 by stoichiometry, not by the model

Parameters

power [W]; optional efficiency [default 0.7], pressure [Pa], temperature [K]

Example flowsheets that use it

Green hydrogen (electrolysis)

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Solar + wind green H₂ → CO₂ methanation