A system dynamics model for stock and flow of tritium in fusion power plant

Kasada, Ryuta; Kwon, Saerom; Konishi, Satoshi; Sakamoto, Y.; Yamanishi, Toshihiko; Tobita, K.

doi:10.1016/j.fusengdes.2015.03.047

Cited by 10 publications

(11 citation statements)

References 8 publications

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“…Recently Kasada et al (2015) show an SD model for the stock and flow of tritium in a fusion power plant in Japan. In this, an SD model of the tritium fuel cycle is developed for analysing stock and flow of tritium in fusion power plants.…”

Section: Further Energy-related Resourcesmentioning

confidence: 99%

Energy related system dynamic models: a literature review

Leopold

2015

Cent Eur J Oper Res

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System dynamics is extensively used as a decision support method in the energy sector. There exists a wide body of applications worldwide that are used not only within power companies but also by governmental agencies at the regional and national level. This review includes most of the relevant energy publications related to system dynamics and presents them within a literature review table divided into four key energy topics. This literature review is carried out in a chronological way and focuses on the period since the year 2000. The main purpose of this study is to summarise the remarkable body of work and the latest system dynamics trends related to the energy sector, in particular renewable energy that system dynamics practitioners have accumulated in the last 15 years.

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Section: Further Energy-related Resourcesmentioning

confidence: 99%

Energy related system dynamic models: a literature review

Leopold

2015

Cent Eur J Oper Res

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“…[26][27][28] The advantage of the model was visual fuels flow compared with early model using programming language. In this case, a steady-state fuel burning with a certain fusion power could still be achieved at least, and the evaluation results are shown in the following part.…”

Section: Mixed Fuel Burning and Cycle Modelmentioning

confidence: 99%

“…15 A solution named DD start-up that fusion reactor could be started up only fueling with initial deuterium was proposed. 27,34,41 Regarding CFETR phase I, dynamic ion density and fusion power in its initial start-up phase was estimated based on the parameters in Table 1. 27,34,41 Regarding CFETR phase I, dynamic ion density and fusion power in its initial start-up phase was estimated based on the parameters in Table 1.…”

Section: Feasibility Of Dd Start-upmentioning

confidence: 99%

“…To evaluate the fuel cycle and tritium self-sufficiency, a mass flow model of fuels for CFETR was developed using the system dynamics platform named STELLA. [26][27][28] The advantage of the model was visual fuels flow compared with early model using programming language. The key formulas in the model are shown as follows.…”

Section: Mixed Fuel Burning and Cycle Modelmentioning

confidence: 99%

“…40 Several studies evaluated the feasibility of DD start-up future fusion reactors. 27,34,41 Regarding CFETR phase I, dynamic ion density and fusion power in its initial start-up phase was estimated based on the parameters in Table 1. 8,42,43 The results of the estimation are shown in Figure 3.…”

Section: Feasibility Of Dd Start-upmentioning

confidence: 99%

See 2 more Smart Citations

Insights into fuel start‐up and self‐sufficiency for fusion energy: The case of CFETR

Nie¹,

Ran

Zeng

et al. 2019

Energy Science & Engineering

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Commercial tritium resources available are too scarce to fully supply the future fusion reactors after International Thermonuclear Experimental Reactor (ITER). Tritium self‐sufficiency, ITER fails to fully validate, was regarded as one of the most important issues needed to be solved in the pathway of achieving fusion energy. After ITER, several concepts of fusion engineering test reactors and fusion demonstration reactors have been proposed worldwide, for example, Chinese Fusion Engineering Test Reactor (CFETR), Fusion Nuclear Science Facility (FNSF), DEMOnstration fusion reactor (DEMO) in European Union and Korea. CFETR is in the engineering design phase and would be hopefully completed around 2020. Tritium resources for the reactor start‐up and tritium self‐sufficiency are two primary issues besides the steady‐state operation for CFETR. The objectives of this work are as follows: (a) to introduce the preliminary fuel cycle concept and available tritium resources for CFETR, (b) to evaluate and discuss the tritium demand for CFETR start‐up (phase I: 200 MW) and the feasibility of DD start‐up, (c) to identify the possible pathways to tritium self‐sufficiency through sensitivity analysis based on the design baseline of CFETR, (d) to evaluate the consequences in case of failing tritium self‐sufficiency, and (e) to identify future R&D needed for tritium self‐sufficiency. It is expected to give insights into the question on how to start the reactor in a more economical way, into the feasibility of tritium self‐sufficiency, and into the question on what will happen in case of failing tritium self‐sufficiency.

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Virtual-reality visualization of loss points of 1 MeV tritons in the Large Helical Device, LHD

Ohtani

Masuzaki

Ogawa

et al. 2021

J Vis

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Intersection points of 1MeV tritons and the plasma facing wall are visualized in the vacuum vessel of Large Helical Device (LHD) with the divertor plates by the virtual-reality (VR) system. The trajectory of the energetic triton is evaluated by means of the collisionless Lorentz orbit code, and the strike point is calculated by the winding number algorithm. The intersection points of the tritons and the plasma facing wall are visualized as spheres with the rendered internal vacuum wall and divertor plates in the VR space, and it is possible to directly observe the strike points distributed on the wall and on the plates. It is found that many tritons intersect with the divertor plates and that some strike on the vacuum vessel. To evaluate the effectiveness of this VR visualization, we ask people to score the effect of experience and the level of understanding after finding the place where many particles attack on the plasma facing wall on the two-dimensional plane or in the VR space. This visualization helps us to determine where the material probes should be placed on the plasma facing wall in the real LHD for experimental analysis of the accumulated tritium on the plasma facing wall. This development of VR visualization will make a significant contribution to the fusion plasma research.

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A system dynamics model for stock and flow of tritium in fusion power plant

Cited by 10 publications

References 8 publications

Energy related system dynamic models: a literature review

Energy related system dynamic models: a literature review

Insights into fuel start‐up and self‐sufficiency for fusion energy: The case of CFETR

Virtual-reality visualization of loss points of 1 MeV tritons in the Large Helical Device, LHD

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