| abstract |
A system for storing energy comprises a hydrogen production device, a tank (7) with a liquid organic hydrogen carrier, which is formed by hydrogenation of an unsaturated compound, a hydrogenation unit (5) with which the unsaturated compound is hydrogenated, and a dehydrogenation unit (9), with which the unsaturated compound is re-formed by heating the hydrogenated compound to release hydrogen. In this case, the heat for heating the hydrogenated compound for the recovery of the unsaturated compound with the release of hydrogen by a heat pump (15) and / or by a device for combined heat and power (12) is generated. |