A study featured in the International Journal of Exergy has uncovered a transformative small-scale power-to-ammonia (P2A) system poised to revolutionize the transition to a hydrogen-powered future.
The study, conducted by Pascal Koschwitz and Bernd Epple of the Technical University of Darmstadt in Germany, Daria Bellotti of the University of Genova in Italy, and Cheng Liang of Proton Ventures BV in the Netherlands, highlights the energy efficiency and cost-effectiveness of this innovative system when compared to conventional methods. This research underscores the potential of green ammonia as a hydrogen storage medium, thus positioning it as a pivotal energy carrier.
The "hydrogen economy" concept revolves around creating a low-carbon economic framework where hydrogen gas serves as the primary energy carrier across various applications, effectively reducing our dependence on carbon-rich fossil fuels. Hydrogen's versatility finds applications in transportation, electricity generation, and industrial processes. What makes hydrogen particularly appealing is that it can be produced sustainably through processes such as the electrolysis of water, resulting in virtually no carbon dioxide or harmful emissions when combusted, with water being the primary waste product.
However, one of the challenges in realizing a hydrogen-based economy lies in the safe and efficient storage of hydrogen. To address this issue, researchers have been exploring hydrogen-rich materials as potential storage media. The conversion of hydrogen into liquefied ammonia (NH3) has emerged as a potentially safer approach for storing large quantities of hydrogen, mitigating the inherent explosive risks associated with gaseous hydrogen storage.
The team of scientists compared between the novel P2A system and conventional P2A systems revealing improved exergy results and, consequently, a notable cost advantage due to lower initial investment requirements.
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