The Proceedings of the International symposium on diagnostics and modeling of combustion in internal combustion engines
Online ISSN : 2424-2918
Session ID : B7-2
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Thermodynamic analysis of a hydrogen reconversion system
The closed-cycle engine
*Kevin KlepatzRobin TempelhagenAristidis DafisHermann RottengruberJohannes Oder
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Abstract

The transition to CO2-neutral sources of energy is a central issue of our time. In order to increase the amount of renewable energy sources in the electricity mix, effective and economical storage technologies are required. One technically and economically sensible option is the electricity storage by using hydrogen electrolysis and subsequent reconversion to the power grid using an H2 closed-cycle engine. During the engine operation, the aspirated air is substituted by an oxygen-enriched inert carrier gas. After the thermal conversion of H2 and O2, the resulting water is separated and the inert gas is recycled back to the combustion chamber. As a result of the substitution of the ambient air by an inert gas, NOx emissions are completely avoided. With this combustion concept, engine efficiencies up to 53 % are achievable.

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© 2022 The Japan Society of Mechanical Engineers
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