The HyGGeTM 100A electrolyzer
The HyGGeTM 100A is a revolutionary electrolyzer, designed from scratch to enhance its robustness, efficiency, and lifespan. The system resides in a sturdy 40ft HighCube container, with a gas-tight wall separating the ATEX-zoned Process Room from the General Purpose Room. The Heat Exchange System is situated in a 20ft Rooftop Frame on top of the main unit.
The HyGGeTM 100A electrolyzer is highly secure, robust, and reliable, and can be conveniently handled using standard 40ft shipment and handling procedures. The system comprises two innovative Cell Stacks that collectively yield a nominal flow of 100Nm³/h of hydrogen at 30barg.
“We designed the HyGGeTM 100A electrolyzer from the ground up to enhance the robustness and efficiency of every single part and process.”
Guy Verkoeyen – Director Business Development
The HyGGeTM 100A water electrolyzer
Hover over the parts of our unit to discover more
Discover the parts of the HyGGe™ 100A
and their functions
Main Electrolyzer Unit Housing
The HyGGeTM 100A electrolyzer is housed in a sturdy 40ft HighCube container, featuring a metal floor, insulated walls and ceilings, and ample air inlets and outlets to ensure optimal ventilation. A gas-tight wall separates the container into an ATEX-zoned section where water is split into hydrogen and oxygen, and a General Purpose Room with all electrical, control, and water handling equipment. Transporting the unit is convenient with standard ISO shipment and handling procedures.
Electrolyzer Rooftop Frame
The 20ft open frame on top of the main unit houses the Heat Exchange System (HXS) and the Power Distribution System (PDS). The HXS includes a Dry Cooler for electrolyte/system cooling, and a Chiller for cooling the oxygen and hydrogen in the Gas Purification Module. The PDS comprises pump control systems for the dry cooler and chiller, circulation heater controls to keep the HyGGeTM 100A electrolyzer frost-free when not in use, ventilation outlets, and an electrical control panel.
Gas Generation Module
This is the heart of the HyGGeTM 100A electrolyzer, featuring 2 innovative Cell Stacks to split water into hydrogen and oxygen. The Gas Generation Module contains all equipment to allow hydrogen generation at 30 barg under controlled conditions. For the Cell Stacks to work effectively, it is needed to create an alkaline solution by adding KOH. The primary circuit of the Cell Stacks is referred to as ‘the electrolyte loop’. The hydrogen and oxygen gases produced leave the electrolyte in gas liquid separators. Next, both gases undergo demineralized water washing to eliminate any residual KOH. The hydrogen is consequently led downstream to the Gas Purification Module while oxygen is released to the atmosphere.
Cell Stacks
Our cell stacks are engineered to operate at a nominal pressure of 30 bar, generating 50Nm³/h of hydrogen and 25Nm³/h of oxygen. Consequently, each HyGGeTM 100A electrolyzer yields a nominal flow of 100Nm³/h of hydrogen at 30 barg. Our R&D team has integrated smart reinforcements into the design, while our production team uses only the most durable materials. This minimizes the risk of deformations under pressure, thereby enhancing the efficiency and lifespan of our cell stacks compared to others in the market.
Gas Purification Module
The gas from the Gas Generation Module undergoes additional purification in two stages. Initially, a DeOxo vessel with a Palladium catalyst on a ceramic carrier is used to bond the oxygen and hydrogen molecules in the hydrogen flow. The vessel’s operational temperature provides an accurate measure of oxygen content. Subsequently, two dryer vessels with Molecular Sieve are used to extract resulting water from the hydrogen flow, leaving a hydrogen gas with water content not exceeding 2ppm.
Gas Quality Control Panel
This panel indicates the Hydrogen Transmitter in Oxygen (HTO), the Oxygen Transmitter in Hydrogen before and after the gas purification (OTH1 and OTH2), and the Mass Flow Measurement (MFM) or gas output of the system. The HTO, or the percentage of hydrogen content in the oxygen flow, should never reach the Lower Explosion Limit (LEL) of 4% to avoid explosive mixtures. Therefore, the system provides a warning when the HTO reaches 1.5% and initiates a safe shutdown routine when the HTO reaches 1.75%.
Water Purification System
The HyGGeTM 100A electrolyzer uses regular tap water as the source for hydrogen production. To prevent minerals and other impurities from contaminating the electrolysis process, the feed water undergoes filtration through a particle filter, an activated carbon filter, a reverse osmosis membrane, and a mixed bed. After a final anti-scaling treatment, the treated feed water can be used for electrolysis. The by-product of this process is still clean water but with an elevated mineral content.
Power Supply
A transformer and a rectifier convert standard 400V AC power into regulated DC power to operate the Cell Stacks. The dry-type or air-cooled transformer is reliable, robust and requires minimal maintenance as it lacks moving parts. The controlled rectifier comprises two cabinets, one for each Cell Stack. Voltage, frequency, and network architecture can be tailored to accommodate customer specific requirements.
Control System
The Main Power Distribution Cabinet is situated in the Utility Room, adjacent to the transformer. Within the cabinet, a Data Control Module houses a standard PLC and a safety PLC responsible for valve operation and flow control throughout the system, guided by feedback from all instruments. This enables secure autonomous system operation. The Data Control Module includes main and emergency switches. The Control System is also remotely accessible via an intuitive Graphical User Interface.
The HyGGe™ 100A electrolyzer features
| Nominal Flow: | 100 Nm³ per hour |
| Nominal Output Pressure: | 30 barg |
| Gas Quality: | > 4.8 (> 99,998%) |
| Containerized: | 40ft High Cube sea container with 20ft frame on top |
| Energy Consumption: | 5,2 kWh/Nm3 |
| Turn Down Ratio: | 20% - 100% |
| Ramp time min-max: | < 1 min |
| Electrical Connection: | 3 x 400V |
| Nominal power consumption BOL: | 520 kW |
| Water consumption: | 120 l/h tap water consumption @ full flow |
| Container (40ft): | 12,2 m x 2,44 m x 2,9 m – 23 ton |
| Rooftop Frame (20ft): | 6,06 m x 2,44 m x 2,59 m – 3 ton |