Investigation of sodium - carbon dioxide interactions with calorimetric studies.

摘要

The Supercritical CO_(2) Brayton Cycle could be a promising option to enhance the competitiveness of future Sodium Fast Reactors. This cycle has been studied due to its high thermodynamic efficiency. Furthermore, it may suppress the difficulties of the sodium-water reaction. Nevertheless, it is highly necessary to get thermodynamic and kinetics information on the potential sodium-CO_(2) chemical reaction and its potential consequences, to compare both of the systems. Calorimetric studies were performed and put into evidence that Na-CO_(2) reaction is characterized by an induction time for temperature lower than 500 deg C, due to CO formation and a consecutive reaction between CO and Na. At higher temperature, a fast global reaction occurs.