Experimental and Numerical Investigations on Thermo Chemical Heat Storage
Abstract
The Institute for Thermodynamics and Thermal Engineering (ITW), University Stuttgart, is investigating chemical heat storage technologies for low-temperature applications. The focus of the work within the project “thermo-chemical heat storage” (CWS) is on the choice of the storage concept, on experimental investigation of suitable reaction systems as well as on modelling and simulation of the reaction behaviour and heat and mass transfer processes in order to develop an efficient reactor design and system concept. At ITW hydration / dehydration reactions of inorganic salts are investigated as storage material for thermo-chemical energy storages. The characteristic reaction behaviour of different materials has been experimentally analysed. In addition an energy assessment of a solar combisystem with a chemical energy store was performed for different system concepts taking the specific reaction behaviour of the thermo-chemical storage materials into account. In this paper, the results of the investigation of several thermo-chemical storage materials and of the energy assessment of a combisystem with a thermo-chemical heat store are presented and discussed.