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  4. Thermal storage by thermoreversible chemical reaction systems
 
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2014
Conference Paper
Title

Thermal storage by thermoreversible chemical reaction systems

Abstract
Recent research work on the development of smart pumpable materials for thermal storage at temperatures below 200 °C will be presented. Currently two different systems being analyzed: additive enhanced CO2-hydrates for climate and cooling purposes and neutralization reactions of organic acids with nitrogen bases for waste heat utilization. CO2-hydrate formation and growth are studied while using hydrogel additives of different morphological structure. In particular hydrogels with a low content of cross- linker significantly promotes the hydrate formation. Several combinations of organic acids and bases are tested in mixing experiments and show that high energy densities can be obtained by these neutralization reactions in liquid systems. Special emphasis is put on the option of long-term-storage of heat. This possibility is demonstrated by distilling off the acid component for the reference reaction system trioctylamine and acetic acid.
Author(s)
Fischer, Matthias  orcid-logo
Fraunhofer-Institut für Umwelt-, Sicherheits- und Energietechnik UMSICHT  
Bruzzano, Stefano  
Fraunhofer-Institut für Umwelt-, Sicherheits- und Energietechnik UMSICHT  
Egenolf-Jonkmanns, Bärbel  orcid-logo
Fraunhofer-Institut für Umwelt-, Sicherheits- und Energietechnik UMSICHT  
Zeidler-Fandrich, Barbara  
Fraunhofer-Institut für Umwelt-, Sicherheits- und Energietechnik UMSICHT  
Wack, Holger  
Fraunhofer-Institut für Umwelt-, Sicherheits- und Energietechnik UMSICHT  
Deerberg, Görge  
Fraunhofer-Institut für Umwelt-, Sicherheits- und Energietechnik UMSICHT  
Mainwork
SHC 2013, 2nd International Conference on Solar Heating and Cooling for Buildings and Industry  
Conference
International Conference on Solar Heating and Cooling for Buildings and Industry (SHC) 2013  
Open Access
DOI
10.1016/j.egypro.2014.02.038
Language
English
Fraunhofer-Institut für Umwelt-, Sicherheits- und Energietechnik UMSICHT  
Keyword(s)
  • thermal energy storage (TES)

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