Helium solubility in liquid metal Pb-16Li

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26722445%3A_____%2F23%3AN0000167" target="_blank" >RIV/26722445:_____/23:N0000167 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Helium solubility in liquid metal Pb-16Li

Popis výsledku v původním jazyce

Thermonuclear fusion is supposed to be a long-term solution to sustainable energy generation. The main effort in this area is focused on fusion of hydrogen isotopes deuterium and tritium in a magnetically confined high temperature plasma. Due to limited tritium resources available, tritium self-sufficiency is one of the key aspects of fusion reactors development. Tritium will be produced in breeding blanket (BB) units, extracted from the blanket medium in tritium extraction units and then further processed in tritium plant of the fusion power plant. Tritium is produced in BB in exothermic nuclear reaction of a neutron with a lithium atom. Helium is a major by-product of this reaction. Several concepts of BB are based on use of liquid metal Pb-16Li as a breeder and a coolant. Helium is usually considered as insoluble in liquid metals leading to significant tendency to form bubbles. To assess potential detrimental effects induced by the formation of helium bubbles in the breeding blanket, the knowledge of helium solubility constant in liquid metal Pb-16Li is a key parameter. The primary objective of this contribution is to discuss the experimental determination of helium solubility in the liquid eutectic alloy Pb-16Li. Summary of available theoretical and experimental data of helium solubility in various liquid metals along with the techniques of their measurement is also presented. Apparatus for determining helium solubility in Pb-16Li is currently being built at Research Centre Řež. Development of the apparatus design is shown. The limitations imposed by the size of the vessels, the accuracy of the measuring equipment and the effect of evaporation of the liquid phase are quantitatively analyzed. The estimated detection limit for the optimized apparatus design is approximately 10‑14 mol He/mol Pb‑16Li. Presented at 49th International conference of Slovak Society of Chemical Engineering – SSCHE 2023.

Název v anglickém jazyce

Helium solubility in liquid metal Pb-16Li

Popis výsledku anglicky

Thermonuclear fusion is supposed to be a long-term solution to sustainable energy generation. The main effort in this area is focused on fusion of hydrogen isotopes deuterium and tritium in a magnetically confined high temperature plasma. Due to limited tritium resources available, tritium self-sufficiency is one of the key aspects of fusion reactors development. Tritium will be produced in breeding blanket (BB) units, extracted from the blanket medium in tritium extraction units and then further processed in tritium plant of the fusion power plant. Tritium is produced in BB in exothermic nuclear reaction of a neutron with a lithium atom. Helium is a major by-product of this reaction. Several concepts of BB are based on use of liquid metal Pb-16Li as a breeder and a coolant. Helium is usually considered as insoluble in liquid metals leading to significant tendency to form bubbles. To assess potential detrimental effects induced by the formation of helium bubbles in the breeding blanket, the knowledge of helium solubility constant in liquid metal Pb-16Li is a key parameter. The primary objective of this contribution is to discuss the experimental determination of helium solubility in the liquid eutectic alloy Pb-16Li. Summary of available theoretical and experimental data of helium solubility in various liquid metals along with the techniques of their measurement is also presented. Apparatus for determining helium solubility in Pb-16Li is currently being built at Research Centre Řež. Development of the apparatus design is shown. The limitations imposed by the size of the vessels, the accuracy of the measuring equipment and the effect of evaporation of the liquid phase are quantitatively analyzed. The estimated detection limit for the optimized apparatus design is approximately 10‑14 mol He/mol Pb‑16Li. Presented at 49th International conference of Slovak Society of Chemical Engineering – SSCHE 2023.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

10305 - Fluids and plasma physics (including surface physics)

Projekt

<a href="/cs/project/9D22001" target="_blank" >9D22001: Implementation of activities described in the Roadmap to Fusion during Horizon Europe through a joint programme of the members of the EUROfusion consortium</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2023

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Proceedings 49th International Conference of the Slovak Society of Chemical Engineering SSCHE 2023

ISBN

978-808208-101-8

ISSN

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e-ISSN

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Počet stran výsledku

10

Strana od-do

1-10

Název nakladatele

Faculty of Chemical and Food Technology STU in Bratislava

Místo vydání

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Místo konání akce

Tatranské Matliare

Datum konání akce

15. 5. 2023

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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