HEAT STORAGE SYSTEM AND METHOD FOR THE CHARGING AND DISCHARGING THEREOF

摘要

Thermal storage system and its charging and discharging process using a heat-transfer fluid. The system includes a phase change storage material contained in a casing that is penetrated by heat exchanger tubes (3), preferably vertical ones, connected at their lower end with at least one lower chamber (62) via lower sub-chambers (62') which include a series of injectors (9) for enabling the heat-transfer fluid to be inserted in gas form; at the upper end, these tubes (3) connect via upper sub-chambers (61') with at least one upper chamber (61) which in turn is connected to a boiler (1) from which downpipes (8) extend via which heat-transfer fluid in liquid form circulates, located outside of the casing, connecting the aforementioned boiler (1) to the lower chamber (62), which enables the natural circulation of the heat-transfer fluid within the system.