Integration of heat pumps into thermal plants for creation of large-scale electricity storage capacities

摘要

Within Thermo-Electric Energy Storage (TEES) concepts, thermal plants are conceivable for reconversion of stored heat into electricity. By this means, new areas of application for existing thermal plants are established and the costs of the storage system are reduced. A promising TEES approach is Pumped-Heat-Electricity-Storage (PHES). In the present study, the thermodynamic potentials of the new concept of integrating PHES systems into different types of thermal plants for the creation of large-scale electricity storage units are assessed - based on exergetic quantities - including the discussion of technical aspects.