Open AccessStorage of Heat, Cold and Electricity
Author(s) -
Anastasia Stamatiou,
Andreas Ammann,
Andreas Abdon,
Ludger Fischer,
Damian Gwerder,
Jörg Worlitschek
Publication year - 2015
Publication title -
chimia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.387
H-Index - 55
eISSN - 2673-2424
pISSN - 0009-4293
DOI - 10.2533/chimia.2015.777
Subject(s) - cold storage , thermal energy storage , electricity , energy storage , environmental science , nuclear engineering , compressed air energy storage , process engineering , materials science , waste management , thermodynamics , engineering , electrical engineering , power (physics) , physics , horticulture , biology
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.