Automation of the Storing‐In Part of a Hydrogen‐Storage System using Liquid Organic Hydrogen Carriers. Issue 3 (29th January 2018)

• Record Type: Journal Article
• Authors: Milella, Vito‐Oronzo; Koelpin, Alexander; Schluecker, Eberhard
• Is Part Of: Energy technology. Volume 6:Issue 3(2018:Mar.)
• Page Start: 547
• Page End: 557
• Publication Date: 2018-01-29
• Subjects: energy conversion -- energy storage -- hydrogen storage -- liquid organic hydrogen carriers -- smart grids; Energy development -- Periodicals; Power resources -- Periodicals; 333.79
• DOI: 10.1002/ente.201700519
• Languages: English
• ISSNs: 2194-4288

Abstract

Abstract: Accumulating electrical energy in decentralized electrical grids is a demanding task. Preliminary work exists on the charging and discharging of liquid organic hydrogen carriers (LOHCs). These carriers allow the storage of hydrogen by reversible hydrogenation of an aromatic compound. A challenge is that the chemical process has to be conducted within the power‐generating infrastructure, and therefore, continuous and fully automated implementation is mandatory. In this work, the fundamentals of controlling and automating LOHC‐based energy‐storage systems are presented. For this purpose, the identification of the controlled variable is performed before its influence on the reaction dynamics is determined. This results in a fully automated hydrogenation process, whereby the conductibility of the reaction, the performance, and the necessity of applying pressure pulsations to get a stable operation mode are shown. Derived from these results, the investigations help to establish LOHCs as feasible hydrogen carriers, which will be a decisive step to mid‐ and long‐term energy‐storage systems suitable to a modern smart‐grid infrastructure. Abstract : In store : Process automation helps to provide coherent insight into the dynamics of a liquid organic hydrogen carrier (LOHC)‐based energy‐storage system. Depending on fluctuations in power generation, identification of the process units and their characteristic properties is mandatory. This study describes an approach to this automation and discuss it.