Systematic search algorithm for potential thermochemical energy storage systems. (1st December 2016)

• Record Type: Journal Article
• Authors: Deutsch, Markus; Müller, Danny; Aumeyr, Christian; Jordan, Christian; Gierl-Mayer, Christian; Weinberger, Peter; Winter, Franz; Werner, Andreas
• Is Part Of: Applied energy. Volume 183(2016)
• Page Start: 113
• Page End: 120
• Publication Date: 2016-12-01
• Subjects: Thermochemical energy storage -- Database -- Systematic search -- Storage material; Power (Mechanics) -- Periodicals; Energy conservation -- Periodicals; Energy conversion -- Periodicals; 621.042
• DOI: 10.1016/j.apenergy.2016.08.142
• Languages: English
• ISSNs: 0306-2619

Abstract

Highlights: An automated search for reaction systems suitable for thermochemical energy storage was performed. Algorithm to build reaction systems for thermochemical energy storage is presented. Close to 1000 possible reaction systems for 5 different reactive gases were found. The VIENNA TCES-database for thermochemical energy storage materials is presented. Abstract: Thermochemical energy storage (TCES) is considered as an emerging green technology for increased energy utilization efficiency, thereby achieving a reduction of greenhouse gases. Various reaction systems based on different substance classes (e.g. hydrates, hydroxides, oxides) were suggested and investigated so far. Nevertheless, the number of know reactions which are suitable is still limited, as the main focus concentrates on the investigation of a handful known substances, their further improvement or applicability. To find novel promising candidates for thermochemical energy storage and also to allow for a broader view on the topic, this work present a systematic search approach for thermochemical storage reactions based on chemical databases. A mathematical search algorithm identifies potential reactions categorized by the reactant necessary for the reaction cycle and ranked by storage density. These candidates are listed in the online available VIENNA TCES-database, combined with experimental results, assessing the suitability of these reactions regarding of e.g. decomposition/recombination temperature, reversibility, cycle stability, etc.