Scalable hydrogen electrolyser for educational use

Douna has developed a hydrogen electrolyser for educational use: a compact, scalable demonstration unit that brings together the main components of a full-scale electrolysis installation in one clear, mobile skid.

The unit is deliberately designed around four principles:

·         Robust — built from proven, industrial-grade components.

·         Simple — transparent and clearly laid out, suitable for demonstration, testing and training.

·         Standardised control — analogue 0–5V input and output signal, with a power supply that also accepts digital control signals.

·         Scalable — the same main components as a large installation, in a more compact form.

Because the electrolyser contains virtually all the main components of a larger installation, the step from demonstration to production is small: what works here scales up to a full system.

Technical highlights:

·         Adjustable power supply up to 6 kW, connecting directly to three-phase power.

·         Direct-current output up to 200 A.

·         Controllable via various control signals, including digital.

As a precision machining company with in-house engineering, Douna builds not only the unit itself but also the critical components within it — from valves and pressure vessels to process and subsea parts. This is how we connect green hydrogen technology with manufacturing at industrial scale.