Researchers in Sweden have created a thermal energy storage system relying on a dynamic air mass flow rate that is applied during both charge and discharge processes. It achieved a maximum thermal efficiency of around 70%. July 14, 2022 Emiliano BelliniResearchers from Sweden’s KTH Royal Institute of Technology have designed a high-temperature packed bed thermal energy storage (TES) system that could be used for the storage of electricity generated by large-scale renewables.
The 49.7 kilowatt-hour thermal (kWhth) system is based on thermal storage in “packed beds” – where a heat storage medium is sealed in an insulated container. It includes heat transfer mechanisms within the system itself. “Packed-bed sensible TESs store thermal energy by heating and cooling solid particles by means of a heat transfer fluid (HTF) that flows through the beds,” the scientists explained….
Storing renewables via radial-flow packed bed thermal energy storage – pv magazine International
