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Dynamic simulation of possible heat management solutions for adiabatic compressed air energy storage

: Wolf, D.; Berthold, S.; Dötsch, C.; Lopez, J.U.; Erkan, T.; Span, R.

Swedvac, the Swedish Society of HVAC Engineers, Stockholm; International Energy Agency -IEA-, Paris:
Effstock 2009. Thermal energy storage for efficiency and sustainability. Abstract book & proceedings : 11th International Conference on Thermal Energy Storage, June 14-17 2009 Stockholm, Sweden
Stockholm: Swedvac, the Swedish Society of HVAC Engineers, 2009
ISBN: 978-91-976271-3-9
8 pp.
International Conference on Thermal Energy Storage <11, 2009, Stockholm>
Conference Paper
Fraunhofer UMSICHT Oberhausen ()
compressed-air energy storage (CAES); electrical energy storage; heat storage; high temperature; heat management; dynamic simulation; Druckluftspeicherung; Stromspeicher; Wärmespeicherung; Wärmemanagement; Hochtemperatur; dynamische Simulation

Adiabatic Compressed Air Energy Storage (A-CAES) represents a zero emission electrical storage technology together with acceptably high cycle efficiency. Therefore the application of internal heat storage becomes necessary. One main characteristic of such A-CAES is that the heat generated during compression exceeds the amount of usable heat for the expansion process afterwards. In real life cycling mode this could lead to a heat storage overload. For heat storage management four possible solutions are proposed and discussed quantitatively. A dynamic model of the whole A-CAES process is under development with the focus on the stratified high-temperature heat storage. After an introduction to basic mechanisms relevant for the understanding of heat management in an A-CAES context, a brief explanation of model structure is given.