Harmonizing nuclear and renewable energy: Case studies

Kim, Jong H.; Alameri, Saeed A.

doi:10.1002/er.4987

Cited by 26 publications

(18 citation statements)

References 7 publications

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“…[1][2][3][4][5][6] However, the construction of new thermal power plants using fossil fuels has been restricted by international treaties, such as the Kyoto Protocol and Paris Agreement. 7,8 Over the past decades, nuclear power has been supplying energy with extremely low emissions of greenhouse gases, [9][10][11] but more thorough measures related to safety issues are still important.…”

Section: Introductionmentioning

confidence: 99%

Magnetohydrodynamic stabilizer suppressing gas entrainment for safety improvement in a sodium‐cooled fast reactor

Lee

Park

2022

Intl J of Energy Research

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Summary In a low‐carbon economy, nuclear energy is considered a viable option to meet increased energy demands. Several countries have been developing sodium‐cooled fast reactors (SFRs), which have a highest potential for commercialization among Generation IV reactor systems. However, for SFR's safe operation, the gas entrainment (GE) issue in SFRs should be resolved first. Although many types of free‐surface stabilizers have been studied for preventing GE, any generalized types showing a stable operating performance have not been determined yet. In this study, as a new type of free‐surface stabilizer, we have tested a magnetohydrodynamic (MHD) stabilizer for the Korean‐conceptual SFR. A pair of torus‐type magnets was devised for the MHD stabilizer through parametric‐model studies. The magnetism well alleviated the sources of GE such as the rotating flow and central sink. As a result, a calm free surface was achieved with an 87% reduction in vortex core depth using 0.07 T magnetic field intensity.

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Section: Introductionmentioning

confidence: 99%

Magnetohydrodynamic stabilizer suppressing gas entrainment for safety improvement in a sodium‐cooled fast reactor

Lee

Park

2022

Intl J of Energy Research

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“…The latest advances in nuclear energy have led to the interests of miniaturization and modularization of Gen IV nuclear reactor. This interest in small and medium reactors is driven both by a desire to reduce the impact of capital costs and can be placed in the remote areas, accelerating the connection with other energy carriers in large grid systems . Meanwhile, it must be aware that safety of nuclear energy production still faces some problems and challenges that cannot be neglected in the process of technological innovation.…”

Section: Introductionmentioning

confidence: 99%

Small‐batch‐size convolutional neural network based fault diagnosis system for nuclear energy production safety with big‐data environment

et al. 2020

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In nuclear energy production, with the continuous innovations and challenges in the big data and the industry 4.0 era, to guarantee the operation safety without the fault and failure will become more complex and intelligent. In this paper, a novel optimized convolutional neural network with small-batch-size processing (SCNN) was proposed and assembled in the nuclear fault diagnosis system. Eleven kinds of normal and fault conditions that include the whole 316 simulator sensor features were used to evaluate the performance of the proposed diagnosis system. The application of batch normalization with SCNN significantly optimized the model validation accuracy and loss under 100 epochs compared with normal operation and adding drop-out operation in same condition. Besides, outstanding diagnosis accuracy was highlighted by the comparison of traditional binary and multiple classification methods. This proposed diagnosis system has achieved more precise diagnosis accuracy and will provide the useful guidance to operators, assisting them to make accurate and rapid decision to ensure nuclear energy production safety. K E Y W O R D Sconvolution layer visualization, convolutional neural network, deep learning, fault diagnosis, nuclear energy production, small-batch-size processing

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“…The technological progress provided regulation of nuclear power based on load and even made it compatible with renewable power sources 4 . Low prices for uranium and the absence of shortage in this type of fuel, as well as some technical problems, slowed down the development of technology for SNF reprocessing.…”

Section: Introductionmentioning

confidence: 99%

Processing of fast neutron reactor fuel by electrorefining: Thematic overview

Галашев

2020

Int J Energy Res

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Summary This work provides basic knowledge on the spent fuel management on the basis of the published literature data on electrorefining. This review examines three main areas of work devoted to electrorefining. These are electrodeposition and electrodissolution using solid and liquid electrodes, as well as mass transfer in phases present during electrorefining. As part of this research, the composition of the irradiated metallic fuel was estimated. Due to the great potential difference between solid cathodes, it is possible to separate actinides from lanthanides. The co‐deposition of metallic Pu and U in the eutectic LiCl‐KCl melt containing UCl3 and PuCl3 indicates stable co‐precipitation of U and Pu at U3+ concentration less than ~0.2 wt. Periodically performed electrical transport of ions to liquid (Cd) and solid cathodes in the galvanic mode made it possible to deposit preferentially U on the solid cathode, and Pu and Am on the liquid cathode. Oxidation of these metals caused fluctuations in the anode potential. The electrode processing after electrorefining is investigated. This process consists of oxidizing the actinides remaining in the liquid electrode by adding CdCl2 and removing the associated chloride by high‐temperature distillation. During the electrorefining of irradiated metallic fuel, the fission products accumulate in the molten salt. Reduction of uranium on a solid cathode from a spent molten salt using a liquid Cd‐Li anode is considered. A model that describes electrorefining with a liquid metal anode, solid cathode, and molten LiCl‐KCl salts, is presented. The formation of plutonium at the surface of a solid cathode is analyzed. In a one‐dimensional model of an electrorefiner, it is shown that the concentration of Pu at the cathode cannot be predicted from the Cm concentration in the melt.

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Harmonizing nuclear and renewable energy: Case studies

Cited by 26 publications

References 7 publications

Magnetohydrodynamic stabilizer suppressing gas entrainment for safety improvement in a sodium‐cooled fast reactor

Magnetohydrodynamic stabilizer suppressing gas entrainment for safety improvement in a sodium‐cooled fast reactor

Small‐batch‐size convolutional neural network based fault diagnosis system for nuclear energy production safety with big‐data environment

Processing of fast neutron reactor fuel by electrorefining: Thematic overview

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