Nuclear fuel rod cladding oxidation and hydrogen production model based on diffusion theory in a multiphase environment of ZrO2, α-Zr(O), and β-Zr at high temperatures (1273 K–1800 K)
| Autor: | M.A. Polo-Labarrios, S. Quezada-García, H. Sánchez-Mora, J. Ortiz-Villafuerte, E. del-Valle-Gallegos |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Zirconium
Materials science Nuclear fuel Renewable Energy Sustainability and the Environment Zirconium alloy Energy Engineering and Power Technology chemistry.chemical_element Thermodynamics 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences Coolant Fuel Technology chemistry MELCOR Heat transfer Decay heat 0210 nano-technology Hydrogen production |
| Zdroj: | International Journal of Hydrogen Energy. 46:13150-13161 |
| ISSN: | 0360-3199 |
| DOI: | 10.1016/j.ijhydene.2021.01.101 |
| Popis: | This paper proposes a mathematical model for the oxidation process of zirconium under the theory of oxygen diffusion in Zircaloy. The model considers ZrO2, α-Zr(O), and β-Zr phases at high temperatures (1273 K–1800 K) in an equivalent fuel rod. The model also considers the heat transfer phenomenon, the decay heat after shutdown, the heat released by the oxidation reaction, the loss of coolant water in the core and the heat transported by the steam produced. A computer program was coded in the C++ environment. The accident scenario of a BWR short term station blackout was simulated with this model. The results are compared with the ones obtained using MELCOR and RELAP/SCDAP codes. The comparison yielded an approximate result for total hydrogen production at the end of the simulation, with a difference of −2.7% compared with RELAP/SCDAP, and a difference of −1.11% with MELCOR. With the present model it is possible to calculate the growth of ZrO2, α-Zr(O), and β-Zr phases through the cladding. |
| Databáze: | OpenAIRE |
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