Premium materials for improved electrolyzer performance

Flow design simulations helped us improve the efficiency of our electrolyzers by choosing the right materials and making smart design decisions. This is crucial for optimizing the system-level efficiencies of our water electrolyzers.

At the cell stack level, efficiencies are profoundly influenced by material quality, component precision, and design choices, with the complexity of the design exponentially tied to these factors. Beyond these intrinsic variables, operating conditions and degradation mechanisms also play critical roles. For example, we have significantly enhanced the efficiency of our cell stacks by utilizing pure nickel and reducing stress levels. This not only mitigates degradation but also contributes to the enhanced electrolyzer performance of the HyGGe^TM 100A and extends the system’s overall lifetime.

Since the Balance of Plant (BoP) power electronics are a known efficiency drain, we use a high-standard rectifier to convert 400V AC to regulated DC. In-depth technology evaluations and supplier benchmarking helped us minimize harmonic distortion to the connected grid and reducing energy waste in the form of heat loss, even under variable grid conditions.

Reduction of stress levels increases electrolyzer performance

Despite the robust construction of our water electrolyzers, we keep the temperature stress levels in our systems under control. Our designers opted for a perfectly dimensioned air-liquid cooling system to dynamically maintain safe cell stack temperatures. This effective cooling method ensures stable operating temperatures and minimizes energy loss.

Similarly, we use a chiller to cool the gas within our systems. The gas purification module features a two-stage purification process: first, a catalyst removes the oxygen, then a molecular sieve dryer eliminates the water. This results in hydrogen purity of 99.998%, reducing the need for additional downstream purification and facilitating compression.

Operational availability and flexibility

The HyGGe™️ 100A features a robust operational mode that maximizes electrolyzer performance and uptime through smart redundancy and remote monitoring. Additionally, automated logs and predictive checks enhance the long-term reliability of our systems.

The system is designed for modular expansion, capable of managing hydrogen production based on real-time grid and user demand. This ensures availability and energy optimization across varying operational states. Smart capabilities to support grid balancing and autonomous power modulation ensure continuous and efficient production. Additionally, our units can automatically enter an ‘idle’ mode during periods of low demand or seamlessly restart when demand increases.