A structured procedure for the selection of thermal energy storage options for utilization and conversion of industrial waste heat

Thermal energy storage is a key enabling technology for the recovery and valorisation of industrial waste heat. Nevertheless, there wide gap between variety heat options investigated recurrent few types virtually implemented in industries. To take advantage wider spectrum solutions, structured procedure proposed this work selection material layout. The algorithm developed consists preliminary design followed by performance estimation overall system where integrated. allows first screening ranking sensible, latent or thermochemical materials using quasi-stationary approach. leads to final system, which based on analysis dynamic thermal response along with physically input-output models load. applied improve discontinuous fluctuating flue gas at medium temperature from steel industry, targeting production process steam electricity. results show that integration packed bed storage, either sensible type, highest amount be generated discharging. Moreover, combination same an organic Rankine cycle Kalina investment rock was found result payback times about seven years, whereas tank-based units appear not profitable due high cost silicone oil.