FY2017 Sodium-CO2 Interaction Tests
- Argonne National Lab. (ANL), Argonne, IL (United States)
An experimental campaign was carried out in Fiscal Year 2017 in the ANL SNAKE facility that investigated the interaction between sCO2 and sodium through injection of sCO2 into a sodium-filled diffusion-bonded heat exchanger channel mock-up. This successful experiment demonstrated that a sustained chemical reaction between the injected CO2 and sodium occurred at temperatures representative of the cold leg of an intermediate heat transport system for a SFR-to-sCO2 Brayton Cycle energy conversion system. Evidence of the chemical reaction included: exothermic heatup of localized regions of the test vessel, production of carbon monoxide, consumption of CO2 and production of solid reaction products that were observed during post-test examination. This experimental re sult was consistent with previous SNAKE experiments. Two of fourteen previous SNAKE tests confirmed that self-plugging of the leakage path/nozzle could occur at higher initial s odium temperatures due to chemical reactions involving CO2, sodium, and sodium-CO2 reaction products. The remaining tests, including the one carried out in Fiscal Year 2017, began with low er initial temperatures and did not self-plug. A new model was developed to determine the reaction rate constant for sCO2 injections into sodium by calculating the increase of bulk sodium temperature. This model will be developed further and used to simulate the behavior of reactor-scale sodium-to-sCO2 heat exchanger failures.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE Office of Nuclear Energy (NE)
- DOE Contract Number:
- AC02-06CH11357
- OSTI ID:
- 1433500
- Report Number(s):
- ANL-ART-100; 138400
- Country of Publication:
- United States
- Language:
- English
Similar Records
Supercritical carbon dioxide and liquid sodium chemical reaction experiments
FY 2016 Progress Report on the ANL Sodium Draining and Refilling Experiments