Exploitation of thermochemical cycles based on solid oxide redox systems for thermochemical storage of solar heat. Part 5: Testing of porous ceramic honeycomb and foam cascades based on cobalt and manganese oxides for hybrid sensible/thermochemical heat storage

摘要

Cascaded ThermoChemical Storage (CTCS) of solar energy is a concept targeted to increase the volumetric energy storage density and address the thermocline temperature distribution inside regenerative sensible-only storage systems. CTCS involves the use of cascades consisting of different thermochemical systems, distributed in a rational pattern inside the storage module tailored to their thermochemical characteristics and to the local heat transfer medium temperature. In the case of air-operated Solar Thermal Power Plants such cascades can consist of porous structures incorporating different redox pair oxide materials that can come in direct contact with the air stream used as heat transfer fluid and operate as compact, hybrid sensible-thermochemical storage modules in series.