Advanced Tools for ITER Tritium Plant System Modeling and Design

Nougués, José María; Feliu, Josep A.; Campanyà, G.; Iraola, Eduardo; Batet, L.; Sedano, L.

doi:10.1080/15361055.2020.1741278

Cited by 3 publications

(3 citation statements)

References 18 publications

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“…• Simulation of tritium system faults through plant first-principle modeling could complete this lack of knowledge. Examples of this are the efforts made by Cristescu et al [5] and the ongoing developments of Nougués et al [6] in order to obtain new fault data.…”

Section: The Training Of Data-driven Approachesmentioning

confidence: 99%

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SMART_TC: an R&D Programme on uses of artificial intelligence techniques for tritium monitoring in complex ITER-like tritium plant systems

Iraola

Sedano²,

Nougués³

et al. 2021

Fusion Engineering and Design

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Section: The Training Of Data-driven Approachesmentioning

confidence: 99%

“…Dynamic modeling codes for tritium plant components are under development [5,6] to support tritium balance matching. Dynamic modeling is particularly needed taking into account that in-vessel inventories remain uncertain and mass balance cannot be directly accounted for.…”

Section: Introductionmentioning

confidence: 99%

SMART_TC: an R&D Programme on uses of artificial intelligence techniques for tritium monitoring in complex ITER-like tritium plant systems

Iraola

Sedano²,

Nougués³

et al. 2021

Fusion Engineering and Design

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“…It is well known that the fusion research community is conducting extensive studies for addressing different drawbacks to assist the long-term functionally and successful realization of commercial operation of fusion reactors. The inventory and control of tritium and material embrittlement by hydrogen isotopes exposure are amongst commonly addressed issues related to the development of plasma-facing materials (PFC) [1,2]. The tritium inventory and control are not straightforward to be addressed due to several materials constraints imposed by future nuclear fusion reactor designs and configurations.…”

Section: Introductionmentioning

confidence: 99%

Deposition, Morphological, and Mechanical Evaluation of W and Be-Al2O3 and Er2O3 Co-Sputtered Films in Comparison with Pure Oxides

et al. 2021

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Compact and defect-free high melting point oxide strengthened metallic matrix configurations are promising to resolve the hydrogen permeation and brittleness issues relevant to the fusion research community. Previous studies on oxide addition to metallic matrix demonstrated a mitigation in brittleness behavior, while deposition techniques and material configurations are still to be investigated. Thus, here, we report the structural, morphological, and mechanical characterization of metal-oxides thin layers co-deposited by radio frequency (RF)and direct current (DC) magnetron sputtering. A total of six configurations were deposited such as single thin layers of oxides (Al2O3, Er2O3) and co-deposition configurations as metal-oxides (W, Be)—(Al2O3, Er2O3). The study of films roughness by atomic force microscopy (AFM) method show that for Al2O3 metallic-oxides is increased to an extent that could favor gaseous trapping, while co-depositions with Be seem to promote an increased roughness and defects formation probability compared to W co-depositions. Lower elastic modulus on metal-oxide co-depositions was observed, while the indentation hardness increased for Be and decreased for W matrix configurations. These outputs are highly relevant for choosing the proper compact and trap-free configuration that could be categorized as a permeation barrier for hydrogen and furtherly studied in laborious permeation yield campaigns.

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Parameters of the UNIQUAC model for describing the vapor-liquid phase equilibrium of D2-T2, D2-DT, DT-T2 hydrogen isotope mixtures

Korotkova

2023

Fine Chem. Technol.

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Objectives. Determination of the parameters of the binary energy interaction of the (UNIversal QUAsiChemical) UNIQUAC model on the basis of mathematical processing of experimental literature data on the phase equilibrium of hydrogen isotopic mixtures D2-T2, D2-DT, DT-T2 to calculate the activity coefficients of the components D2, DT, and T2.Methods. The method of successive approximations was used in junction with the “from stage to stage” method, which consists in calculating a single evaporation process on a theoretical plate.Results. Equations were written for calculating the activity coefficients of hydrogen isotopes on the basis of the Sherwood theory as applied to binary D2-T2, D2-DT, DT-T2 and ternary D2-DT-T2 hydrogen isotope mixtures. The graphical dependences of the activity coefficients and separation coefficients of mixtures D2-T2, D2-DT, and DT-T2 are compared in the range of the concentration of a highly volatile component from 0 to 100 mol % at atmospheric pressure for three options: ideal mixtures; non-ideal mixtures using the Sherwood theory; non-ideal mixtures on the basis of the UNIQUAC model. The dependences of the separation coefficients a were found to be similar for all binary isotopic mixtures. However, when considering mixtures as ideal, a increases.According to Sherwood's theory, a remains a practically constant value, which is independent of the composition of the mixture. The UNIQUAC model predicts a decrease in a with an increase in the concentration of a less volatile component in the mixture. The profile of the distribution of hydrogen isotopes D2, DT, and T2 of a three-component mixture D2-DT-T2, along the height of a distillation column operating in a closed mode was calculated for three variants. It was accepted that: pressure along the height of the column is constant and equal to atmospheric 760 mm Hg. Art.; number of theoretical plates 21; concentration of components in the liquid phase on the first plate (stage), in mol %: XD₂ = 65; XDT= 10; XT₂= 25; the accuracy of calculating the composition of the vapor phase is 10-10.Conclusions. The parameters of the binary energy interaction of the UNIQUAC model of hydrogen isotopic mixtures D2-T2, D2-DT, and DT-T2 are determined. The UNIQUAC model is adequate in relation to experimental data on the coefficient of separation. Due to systematic deviations in the theoretical Sherwood and ideal models, they are not suitable for further calculations of phase equilibrium of isotopic mixtures of hydrogen D2-T2, D2-DT, DT-T2, and D2-DT-T2.

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Advanced Tools for ITER Tritium Plant System Modeling and Design

Cited by 3 publications

References 18 publications

SMART_TC: an R&D Programme on uses of artificial intelligence techniques for tritium monitoring in complex ITER-like tritium plant systems

SMART_TC: an R&D Programme on uses of artificial intelligence techniques for tritium monitoring in complex ITER-like tritium plant systems

Deposition, Morphological, and Mechanical Evaluation of W and Be-Al2O3 and Er2O3 Co-Sputtered Films in Comparison with Pure Oxides

Parameters of the UNIQUAC model for describing the vapor-liquid phase equilibrium of D<sub>2</sub>-T<sub>2</sub>, D<sub>2</sub>-DT, DT-T<sub>2</sub> hydrogen isotope mixtures

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