CE Global Glossary
This glossary defines the hydrogen production terms used across CE Global: generator hardware, PEM electrolysis, purity specification, and the industrial and consumer supply contexts.
PEM hydrogen generator
A PEM hydrogen generator is a device that produces hydrogen on demand by electrolysing purified water across a solid proton-exchange membrane.
Read definition →PEM electrolysis
PEM electrolysis is water electrolysis in which protons are conducted through a solid proton-exchange membrane that also separates the hydrogen and oxygen streams.
Read definition →Hydrogen production
Hydrogen production is the conversion of a hydrogen-bearing feedstock — water in electrolysis — into hydrogen gas.
Read definition →Hydrogen purity
Hydrogen purity is the specified minimum hydrogen mole fraction of a gas stream together with limits on named contaminant species.
Read definition →Industrial PEM
Industrial PEM refers to proton-exchange-membrane electrolysis equipment sized and packaged for continuous or duty-cycled industrial hydrogen supply.
Read definition →Hydrogen for combustion
Hydrogen for combustion is hydrogen generated on demand and introduced with the intake air of combustion equipment, without modifying the equipment's fuel system.
Read definition →Hydrogen for wellness modalities
Hydrogen for wellness modalities refers to small-scale PEM hydrogen generation used by consumer modality equipment. It is an equipment category description, not a health claim.
Read definition →Hydrogen supply
Hydrogen supply is the arrangement by which hydrogen reaches a point of use, either as delivered bulk gas or as on-demand generation at site.
Read definition →
Reference material only. CE Global publishes hydrogen production and PEM electrolysis engineering information. Nothing here is a medical, health, performance, emissions or fuel-saving claim.