Thermal hydraulic experiments at the S-Allegro large-scale experimental facility

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26722445%3A_____%2F21%3AN0000216" target="_blank" >RIV/26722445:_____/21:N0000216 - isvavai.cz</a>

Výsledek na webu

—

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

Thermal hydraulic experiments at the S-Allegro large-scale experimental facility

Popis výsledku v původním jazyce

The S-Allegro loop, located at Research Centre Rez, Czech Republic, is a large-scale experimental facility intended for a wide range of high temperature helium experiments. The facility is a scaled-down of the gas-cooled fast reactor (GFR) demonstrator ALLEGRO and is composed of a primary helium circuit with an electrically heated reactor vessel, a secondary helium circuit, a tertiary water circuit, and a dedicated loop for decay heat removal experiments. The operational parameters of the helium circuits correspond to those of the GFR and the high temperature reactor (HTR), reaching temperatures up to 850 °C, pressures up to 7 MPa, and flow rates up to 0.5 kg/s. The purpose of the facility is to verify the systemic behavior of the ALLEGRO concept during both nominal and accident scenarios; to test high temperature helium components, such as heat exchangers and blowers; and to provide thermal hydraulic data for computational model benchmarking. In this paper, an experimental campaign focused on thermal hydraulic experiments with the helium circuits under the relevant HTR conditions is described. Selected steady state experiments with a focus on the heat transfer assessment of the main component are also presented, and the results of a thermal hydraulic computational model of the loop are compared with the experimental data. The ability of the model to predict the systemic behavior of the loop is evaluated and data is provided that describe the thermal hydraulic behavior of a complex system with high temperature helium. Moreover, the experience and lesson learned from the operation of the large-scale helium facility are shared.

Název v anglickém jazyce

Thermal hydraulic experiments at the S-Allegro large-scale experimental facility

Popis výsledku anglicky

The S-Allegro loop, located at Research Centre Rez, Czech Republic, is a large-scale experimental facility intended for a wide range of high temperature helium experiments. The facility is a scaled-down of the gas-cooled fast reactor (GFR) demonstrator ALLEGRO and is composed of a primary helium circuit with an electrically heated reactor vessel, a secondary helium circuit, a tertiary water circuit, and a dedicated loop for decay heat removal experiments. The operational parameters of the helium circuits correspond to those of the GFR and the high temperature reactor (HTR), reaching temperatures up to 850 °C, pressures up to 7 MPa, and flow rates up to 0.5 kg/s. The purpose of the facility is to verify the systemic behavior of the ALLEGRO concept during both nominal and accident scenarios; to test high temperature helium components, such as heat exchangers and blowers; and to provide thermal hydraulic data for computational model benchmarking. In this paper, an experimental campaign focused on thermal hydraulic experiments with the helium circuits under the relevant HTR conditions is described. Selected steady state experiments with a focus on the heat transfer assessment of the main component are also presented, and the results of a thermal hydraulic computational model of the loop are compared with the experimental data. The ability of the model to predict the systemic behavior of the loop is evaluated and data is provided that describe the thermal hydraulic behavior of a complex system with high temperature helium. Moreover, the experience and lesson learned from the operation of the large-scale helium facility are shared.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20305 - Nuclear related engineering; (nuclear physics to be 1.3);

Projekt

<a href="/cs/project/TH02020675" target="_blank" >TH02020675: Inovativní materiály, výrobní technologie a konstrukční řešení pro výměnu tepla za vysokých teplot v jaderných a chemicko-technologických procesech</a><br>

Návaznosti

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

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proceedings of International Conference on High Temperature Reactor Technology

ISBN

978-623-97722-0-8

ISSN

—

e-ISSN

—

Počet stran výsledku

8

Strana od-do

109-116

Název nakladatele

Indonesian Nuclear Society

Místo vydání

—

Místo konání akce

Virtual, Indonesia

Datum konání akce

2. 6. 2021

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

—