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Integrated hydrogen systems : Comparative evaluation and experimental prototype

Kagiampakis Ioannis

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Summary

This dissertation is focused on the integrated hydrogen systems, synthesizing their theoretical, technological, and experimental research. More specifically, in the theoretical section, hydrogen is positioned as an energy carrier with a thorough detailing of its production techniques (natural gas reforming, electrolysis, and biomass gasification), storage, and transportation methods (composite, liquid, etc.), and the major modes of consumption (internal combustion engines, fuel cells, heating). Then follows a comparative assessment of the individual technologies belonging to each stage of the hydrogen cycle in relation to the technological and economic parameters alongside its ecological impact. As a result, the most efficient and environmentally friendly solutions will be outlined for the further advancement in the development of such systems. In the experimental section of the work, carried out at the Geoenergy Institute FORTH/IG housed on the campus of the Technical University of Crete. an experimental prototype of a hydrogen system incorporating an electrolysis unit (Mars h13 400D) and a fuel cell (Aircell 500) is constructed and tested for functionality, energy efficiency, and overall performance.The work is concluded by formulating conclusions and proposals for future extensions, giving the ambition to offer practical and documented approaches for the evaluation and implementation of hydrogen systems, enhancing knowledge about its use as a green fuel in the context of energy decarbonization.

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