Storage of Heat, Cold and Electricity
Keywords:Dual energy storage & converter, Electricity storage, Power-to-heat, Reversible heat pump
AbstractA 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.
How to Cite
A. Stamatiou, A. Ammann, A. Abdon, L. J. Fischer, D. Gwerder, J. Worlitschek, Chimia 2015, 69, 777, DOI: 10.2533/chimia.2015.777.
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