Packed-bed single-tank thermocline system with reduced cost is an alternative to the conventional two-tank for thermal energy storage. This work systematically explores wall impact on behavior of packed-bed tanks. For this purpose, adapted transient models were developed and fully exploited first time. Two tank configurations investigated compared: a high-temperature pilot-scale steel low-tempe...

Abstract High temperature thermal energy storages are becoming more and important as a key component in concentrating solar power plants. Packed bed represent an economically viable large scale storage solution. The present work deals with the analysis optimization of packed storage. influence quasi-dynamic boundary conditions on thermodynamic performance is evaluated. Levelized Cost Storage in...

PEM fuel cells utilizing hydrogen and oxygen have shown great promise as future sources of clean, efficient power. Due to difficulties encountered in hydrogen storage and transport, investigation of on-board generation of hydrogen via fuel processing of liquid hydrocarbons has gained prominence. To achieve these goals, the need for compact reactor systems with effective component and heat integ...

The present paper aims to study the effect of partial blocking and flow regime on mutual turbulent interplay between porous non-porous regions in packed bed energy storage systems (PBESSs). To this end, high-fidelity pore-scale large eddy simulations (LES) are conducted for two PBESS configurations, namely full blockage under discharge process at three Re numbers 3600, 7200, 14,400. influences ...