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Open Access Storage of Heat, Cold and Electricity

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A promising energy storage system is presented based on the combination of a heat pump, a heat engine, a hot and a cold storage. It can be operated as a pure bulk electricity storage (alternative to Pumped Heat Electrical Storage (PHES)/Compressed Air Energy Storage (CAES)) or as combined storage of heat, cold and electricity. Both variations have been evaluated using a steady state, thermodynamic model and two promising concepts are proposed: A transcritical CO2 cycle for the pure electricity storage and a subcritical NH3 cycle for combined storage of electricity, heat and cold. Parametric studies are used to evaluate the influence of different parameters on the roundtrip efficiency of the storage system.

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Keywords: DUAL ENERGY STORAGE & CONVERTER; ELECTRICITY STORAGE; POWER-TO-HEAT; REVERSIBLE HEAT PUMP

Document Type: Research Article

Affiliations: 1: Group Thermal Energy Storage (TES), Competence Centre Thermal Energy Systems & Process Engineering, Lucerne University of Applied Sciences and Arts, CH-6048 Horw, Switzerland 2: Group Thermal Energy Storage (TES), Competence Centre Thermal Energy Systems & Process Engineering, Lucerne University of Applied Sciences and Arts, CH-6048 Horw, Switzerland. [email protected]

Publication date: December 1, 2015

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  • International Journal for Chemistry and Official Membership Journal of the Swiss Chemical Society (SCS) and its Divisions

    CHIMIA, a scientific journal for chemistry in the broadest sense, is published 10 times a year and covers the interests of a wide and diverse readership. Contributions from all fields of chemistry and related areas are considered for publication in the form of Review Articles and Notes. A characteristic feature of CHIMIA are the thematic issues, each devoted to an area of great current significance.

    As of March 1, 2022, CHIMIA International Journal for Chemistry will be hosted on www.chimia.ch. Please contact the publisher directly for more information.

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