The features and performance of a hydrogen energy storage system included in the microgrid powering a plant for advanced green technologies is presented. The microgrid is powered by a 730–kW photovoltaic source and four energy storage systems.
The whole system is controlled by the microgrid system supervisor. Operative tests at nominal power show that the round-trip efficiency of the hydrogen energy storage system at full power is ca. 10% in a pure electric operation and ca. 24% in a heat cogeneration operation. At half power these values reduce to 9.5% and 18%, respectively.
In this work, a kW-class hydrogen energy storage system included a microgrid of the GPLab of the Veritas company is presented. This system consists of three units, HGU, CSU and EGU. The first one includes a water demineralizer, a 22.3–kW AEL and a three–step purifier providing hydrogen with 99.9998% purity.
The hydrogen storage system consists of a water demineralizer, a 22.3–kW alkaline electrolyzer generating hydrogen, its AC–DC power supply, 99.9998% hydrogen purifier, 200-bar compressor, 200–L gas storage cylinders, a 31.5–kW proton–exchange–membrane fuel cell running on hydrogen, its DC–AC power conditioning system.
Hydrogen is involved in three units of the GPLab, namely the electrolyzer-hydrogen- fuel cell (ELHFC) that constitutes the hydrogen energy storage system (HESS), the pilot unit extracting hydrogen from biodiesel and a pilot multidrive vessel powered by a fuel cell fed with hydrogen. This paper is focused on HESS.
The updated (May 2024) Hydrogen Infrastructure Map is now available online show mapping how the European infrastructure evolves across countries and sectors for hydrogen distribution, transmission, import terminals, storage, demand and production towards 2030, 2040 and 2050. Our H2 Storage projects “HyStorage” and “H2 Krummhörn” are par...