Dynamic simulation of possible heat management solutions for adiabatic compressed air energy storage
Presentation held at the Effstock 2009, International Conference on Thermal Energy Storage
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.