Characteristic analysis of natural circulation residual heat removal in small reactor

Haoyang Liao; Xianbo Wang; Jia Ma; Fulong Zhao; Chengtao Li; Sichao Tan

International Journal of Advanced Nuclear Reactor Design and Technology (Dec 2022)

Characteristic analysis of natural circulation residual heat removal in small reactor

Haoyang Liao,
Xianbo Wang,
Jia Ma,
Fulong Zhao,
Chengtao Li,
Sichao Tan

Affiliations

Haoyang Liao: College of Nuclear Science and Technology, Harbin Engineering University, Heilongjiang, Harbin, 150001, PR China; Heilongjiang Provincial Key Laboratory of Nuclear Power System & Equipment, Harbin Engineering University, Harbin, 150001, PR China
Xianbo Wang: College of Nuclear Science and Technology, Harbin Engineering University, Heilongjiang, Harbin, 150001, PR China; Heilongjiang Provincial Key Laboratory of Nuclear Power System & Equipment, Harbin Engineering University, Harbin, 150001, PR China
Jia Ma: Aerospace System Engineering Shanghai, Shanghai, 201109, PR China
Fulong Zhao: College of Nuclear Science and Technology, Harbin Engineering University, Heilongjiang, Harbin, 150001, PR China; Heilongjiang Provincial Key Laboratory of Nuclear Power System & Equipment, Harbin Engineering University, Harbin, 150001, PR China; Corresponding author. College of Nuclear Science and Technology, Harbin Engineering University, Heilongjiang, Harbin, 150001, PR China.
Chengtao Li: College of Nuclear Science and Technology, Harbin Engineering University, Heilongjiang, Harbin, 150001, PR China; Heilongjiang Provincial Key Laboratory of Nuclear Power System & Equipment, Harbin Engineering University, Harbin, 150001, PR China
Sichao Tan: College of Nuclear Science and Technology, Harbin Engineering University, Heilongjiang, Harbin, 150001, PR China; Heilongjiang Provincial Key Laboratory of Nuclear Power System & Equipment, Harbin Engineering University, Harbin, 150001, PR China

Journal volume & issue: Vol. 4, no. 4
pp. 187 – 195

Abstract

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In order to study the characteristics of small helium-xenon cooled nuclear reactor that only relies on natural circulation to remove residual heat after shutdown, this paper carries out geometric and physical modeling of helium-xenon cooled nuclear reactor, and uses CFD to simulate the process of natural circulation residual heat removal. Variation laws of the hot spot temperature on the surface of fuel cladding and the mass flow of helium-xenon mixed gas under different working conditions are calculated, and the transient characteristics of temperature, flow and other related parameters in the system loop are analyzed. The calculation results show that during the natural circulation residual heat removal process, the overall change trend of the hot spot temperature on the surface of the fuel cladding, the average temperature of the primary coolant and reactor outlet temperature first rises to the highest value and then decreases, and the mass flow of helium-xenon mixed gas shows an exponential decay trend; Increasing the initial mass flow of helium-xenon mixed gas and reducing the residual heat of the reactor core can reduce the maximum hot spot temperature on the surface of the fuel cladding. The relevant research results provide a useful reference for the optimal design of natural circulation residual heat removal of helium-xenon cooled nuclear reactor.

Published in International Journal of Advanced Nuclear Reactor Design and Technology

ISSN: 2468-6050 (Online)
Publisher: KeAi Communications Co., Ltd.
Country of publisher: China
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Nuclear engineering. Atomic power
Website: https://www.keaipublishing.com/en/journals/international-journal-of-advanced-nuclear-reactor-design-and-technology/

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