Abstract
This paper aims to describe the capability of the system boric acid–boron oxide for thermochemical energy storage. As part of the systematic research and in-depth analysis of potential solid/gas reaction systems, performed during the last years, this reaction system appears to be highly promising for the future of worldwide sustainable energy supply. The analysis of the reaction heat, by means of thermogravimetric and macroscopic investigations, not only showed a significantly higher energy density of 2.2 GJ/m3, compared to sensible- and latent energy storages, but the reaction kinetic further demonstrated the reactions’ suitability to store energy from renewable energy and waste heat sources. This paper, therefore, shows a new approach regarding the application of the boric acid–boron oxide reaction system and elaborates on the advantages and challenges for its use as energy storage.
Highlights
It lies within human nature to stick to accustomed patterns as long as they bring the desired result, despite knowing about the potential severe consequences for the future
The outcome investigations demonstrates the capability of acid–boron oxide
Conclusions losses: 1.7 GJ/m ) without significant problems for a storing process. It is a suitable candidate for energy storage
Summary
It lies within human nature to stick to accustomed patterns as long as they bring the desired result, despite knowing about the potential severe consequences for the future. Emitting gases like carbon dioxide or nitrogen oxides are, rightly doomed for their contribution to environmental pollution and an increase of the global warming effect with severe consequences, such as rising sea levels, droughts, floods, or hurricanes. It took politics until the end of the 20th century to slowly recognise global warming and its harmful impact as a serious global threat. The Kyoto Protocol concluded in 1997 was one of the first international political confessions concerning environmental protection, with a legal obligation to reduce greenhouse gas (GHG) emissions [1] It was followed by further regulations, national commitments, and activities, such as the Europe 2020 strategy or the 2030 climate energy framework [2,3]. Renewable energy sources and the promotion of efficiency measures are thereby seen as key tasks for a sustainable reduction of GHG emissions
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