Scientists in Poland have developed a compressed air energy storage technology using a thermal energy storage (TES) system built into a disused mine shaft. The system works without external heat sources, and utilizes an air compressor, a compressed air reservoir with a built-in thermal energy storage system, and an air expander. July 15, 2022 Emiliano BelliniA group of scientists from the Silesian University of Technology in Poland has developed a compressed air energy storage (CAES) technology using a thermal energy storage (TES) system built into a disused mine shaft, which is effectively repurposed as a compressed air tank. “Our storage concept is aimed at reusing and protecting the post-mining underground infrastructure, which very often, after the closure of the mine, is irretrievably devastated,” the research’s corresponding author, Łukasz Bartela, told pv magazine.The…