Evaporation and condensation model for a cooling system of the LiPb cold trap device

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F19%3A00333301" target="_blank" >RIV/68407700:21220/19:00333301 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1016/j.fusengdes.2019.03.152" target="_blank" >https://doi.org/10.1016/j.fusengdes.2019.03.152</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.fusengdes.2019.03.152" target="_blank" >10.1016/j.fusengdes.2019.03.152</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Evaporation and condensation model for a cooling system of the LiPb cold trap device

Popis výsledku v původním jazyce

The eutectic liquid metal LiPb is considered as one of the tritium breeders of the first fusion power reactors. The flowing liquid metal dissolves alloying elements of the structural steels and thus causes their corrosion. The proposed type of the cold trap is a device providing extraction of corrosion products from liquid metal by gravity separation, which occurs at lower temperatures than the operating conditions of LiPb in the fusion reactor blankets. The developed cold trap consists of three loops. The primary loop is designed for LiPb liquid metal flow purification. The proposed cooling of the primary loop is based on the water-steam natural convection with two basic principles; evaporation and condensation. The evaporation section supports the optimal heat transfer from the primary loop and the condenser section removes heat from the trap body to the third loop. To ensure the required conditions at all operational thermal loads the presence of the inert gas (argon) in the secondary loop is provided. However, the addition of the inert gas into the steam significantly reduces the heat and mass transfer to the condenser and consequently leads to degradation of the heat removal potential of the condensation. A 0D model is developed and applied to solve these processes. Validation of this model for the operational conditions and achieved results for the cold trap operational states are analyzed and discussed.

Název v anglickém jazyce

Evaporation and condensation model for a cooling system of the LiPb cold trap device

Popis výsledku anglicky

The eutectic liquid metal LiPb is considered as one of the tritium breeders of the first fusion power reactors. The flowing liquid metal dissolves alloying elements of the structural steels and thus causes their corrosion. The proposed type of the cold trap is a device providing extraction of corrosion products from liquid metal by gravity separation, which occurs at lower temperatures than the operating conditions of LiPb in the fusion reactor blankets. The developed cold trap consists of three loops. The primary loop is designed for LiPb liquid metal flow purification. The proposed cooling of the primary loop is based on the water-steam natural convection with two basic principles; evaporation and condensation. The evaporation section supports the optimal heat transfer from the primary loop and the condenser section removes heat from the trap body to the third loop. To ensure the required conditions at all operational thermal loads the presence of the inert gas (argon) in the secondary loop is provided. However, the addition of the inert gas into the steam significantly reduces the heat and mass transfer to the condenser and consequently leads to degradation of the heat removal potential of the condensation. A 0D model is developed and applied to solve these processes. Validation of this model for the operational conditions and achieved results for the cold trap operational states are analyzed and discussed.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20303 - Thermodynamics

Projekt

<a href="/cs/project/TE01020455" target="_blank" >TE01020455: Centrum pokročilých jaderných technologií (CANUT)</a><br>

Návaznosti

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

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název periodika

Fusion Engineering and Design

ISSN

0920-3796

e-ISSN

1873-7196

Svazek periodika

146

Číslo periodika v rámci svazku

September

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

6

Strana od-do

2199-2204

Kód UT WoS článku

000488313700175

EID výsledku v databázi Scopus

2-s2.0-85063866572