Experimental Investigation on Steam Generation Performance of a Solid Thermal Storage‐Based Steam Production System

This study presents the construction and experimental investigation of a solid thermal storage‐based steam production system, which primarily consists of a solid heat storage unit, a steam generator, a feedwater system, and an electric heating device. Steam generation performance was evaluated under different experimental operating conditions, and operational parameters of each component were recorded. The results indicate that under constant initial conditions and steam flow rate, the system can stably produce steam at 0.2 MPa for 254 min, with the lowest steam‐generating temperature of the storage medium reaching 321.21°C and a system efficiency ( η ) of 54.37%. When producing steam at 0.5 MPa, the system operates for 199 min, with a minimum storage medium temperature of 358.41°C and an efficiency of 47.47%. An increase of 41.9 kJ/kg in the outlet steam enthalpy results in a 21.65% reduction in system operating time. The fluctuation of steam parameters under all tested conditions remained below 10%, demonstrating the system's capability for stable steam production. Furthermore, the study shows that the time required for the system to reach the target steam parameters from startup is influenced by the heat release power of the storage medium and the outlet steam parameters. Specifically, when the steam pressure is increased from 0.2 to 0.5 MPa, the system startup duration increases by 30.9%.