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2009
Presentation
Titel
Evaluating plant configurations for adiabatic compressed air energy storage by dynamic simulation
Titel Supplements
Presentation held at Biennial International Conference "Electrical Energy Storage Applications and Technologies", EESAT, 2009, Seattle/Wash., October 6., 2009
Abstract
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. To assess these solutions and to obtain a well suited overall plant configuration a dynamic model of the whole A-CAES process was developed 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 the model structure is given and two heat management solutions are discussed more indetail.
Language
English