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Advancing Green Hydrogen Integration: Experimental Analysis of a Commercial Boiler

C. Tena(1), M. Urbano(2), M. Calderón(2), P.J. Muñoz(1), J.F. González(1)

1.- Department of Applied Physics, University of Extremadura, Badajoz (Spain)

2.- Department of Electrical, Electronic and Automatic Engineering, University of Extremadura, Badajoz 8Spain)

2025-07-25

In the context of the energy transition towards a sustainable model, green hydrogen [1] has emerged as a pivotal element in the development of clean technologies. The production process of this energy vector involves electrolysis, which is driven by renewable energies such as wind and solar power. The present project entails the design, assembly and commissioning of a test bench, the purpose of which is to evaluate a commercial boiler that operates exclusively on green hydrogen.

The installation incorporates high-precision measurement and control systems, enabling the monitoring of critical parameters such as temperature, pressure and flow rate during combustion tests. Additionally, it encompasses the development of a programmable logic controller (PLC)-based automated system capable of real-time data recording.

The preliminary findings underscore the viability of green hydrogen as a clean and sustainable fuel, demonstrating its capacity to eliminate direct CO2 emissions while exhibiting notable efficiency in domestic hot water (DHW) applications.

However, challenges associated with hydrogen supply and combustion control were also identified, creating opportunities for future optimisation.

This research not only validates the technical feasibility of employing green hydrogen in combustion systems, which are responsible for the majority of CO2 emissions, but also contributes to advancing the global energy transition.

Key words:Green hydrogen, boiler, combustion, energy transition, energy efficiency.

[1] Acciona, “EL HIDRÓGENO VERDE: LA ENERGÍA DEL FUTURO CLAVE EN LA DESCARBONIZACIÓN.”

[2] I. Staffell et al., “The role of hydrogen and fuel cells in the global energy system,” Feb. 01, 2019, Royal Society of Chemistry. doi: 10.1039/c8ee01157e.

[3] M. Nolasco García-Tola Monpín, “HIDRÓGENO VERDE PARA UN FUTURO SOSTENIBLE.”