Encyclopedia
Green hydrogen and plant operations encyclopedia
21 terms from electrolyser operation, plant performance and industrial analytics, written for people who operate the equipment rather than for people writing about it.
Electrolyser
Cell voltage
The potential across a single electrolysis cell, and the primary indicator of its condition.
Current density
Operating current divided by active electrode area, usually in A/cm².
Electrolyte
The ion-conducting medium between the electrodes.
Gas crossover
Hydrogen permeating through the separator or membrane into the oxygen stream, and the reverse.
Membrane electrode assembly
The bonded membrane and catalyst layers at the core of an electrolyser cell.
Polarisation curve
Cell voltage plotted against current density at controlled conditions.
Shunt current
Current bypassing the intended electrical path through shared electrolyte channels.
Performance
Operations
Safety
Plant
Analytics
Digital twin
A computational representation of a physical asset, updated from its data.
Physics-informed machine learning
Machine learning constrained by the governing equations of the system.
Remaining useful life
Estimated operating time before an asset reaches a defined end-of-life criterion.
Residual learning
Modelling the gap between what physics predicts and what is measured.
State of health
The current condition of an asset relative to its as-new condition.