Investigation on thermal-hydraulic characteristics of the spent fuel pool with a complete passive cooling system

Han, Fei; Kuang, Yiwu; Cheng, Ya; Wang, Wen

doi:10.1016/j.anucene.2022.109326

Cited by 5 publications

(2 citation statements)

References 34 publications

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“…The process of natural circulation in an SFP can be subdivided into three stages: in the first stage, the temperature of the pool water gradually produces thermal plumes; in the second stage, the formation of thermal stratification occurs; and in the third stage, a steady state of natural convection circulation is reached. Han et al [46] designed two layouts to study the effect of the heat exchanger arrangement on the flow pattern in an SFP, as shown in Figure 5. It is suggested that the proper distance between the heat exchanger and the wall is conducive to the formation of natural convection.…”

Section: Research On Heat Transfer Capacity Of Pcsmentioning

confidence: 99%

Research Progress on Thermal Hydraulic Characteristics of Spent Fuel Pools: A Review

Wang

Tang

et al. 2023

Energies

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Nuclear power plants (NPPs) produce large amounts of spent fuel while generating electricity. After the spent fuel is taken out of the reactor core, it still has a high decay heat and needs to be cooled for years or even decades before it can be reprocessed or buried deeply. Due to the long storage period of spent fuel, storage safety evaluation is a concern. In this regard, cooling systems are critical for the safe storage of spent fuel. Here, the research progress of cooling methods for spent fuel pools (SFPs) is reviewed, and the structural characteristics, application limitations and heat transfer performance of active and passive cooling technologies under accident conditions are discussed in detail. Moreover, future developments of SFPs are discussed, and the results of this review confirm that there is a great deal of research scope to improve the cooling performance and safety of spent fuel. This paper aims to provide a reference guide for engineers and will be highly beneficial to researchers engaged in spent fuel storage.

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Section: Research On Heat Transfer Capacity Of Pcsmentioning

confidence: 99%

Research Progress on Thermal Hydraulic Characteristics of Spent Fuel Pools: A Review

Wang

Tang

et al. 2023

Energies

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“…For the 50% and 70% filling ratios, no difference in heat transfer was observed; therefore, smaller filling ratios were not investigated. In addition to TPCTs, researchers have explored passive cooling methods for NSFPs using two-phase loop thermosyphons (Ye et al, 2013;Xiong et al, 2015;Kuang et al, 2019;Han et al, 2022;Surip et al, 2022;Zhang et al, 2023). Over the years, heat pipes have been the subject of ongoing research, with a focus on understanding their operation and limitations as heat transfer devices.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation of the heat transfer characteristics, operating limits, and temperature distribution of a prototypically 3 m long two-phase closed thermosyphon for spent fuel pool passive cooling

Castro,

Kirsch,

Kulenovic

et al. 2024

Exp. Comput. Multiph. Flow

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The current study investigated the heat transfer performance, operation limits, and temperature distribution of a 3 m prototype model for a large-scale straight two-phase closed thermosyphon with deionized water designed for passive cooling of nuclear spent fuel pools with a filling ratio ranging from 20% to 100% and a heat source temperature ranging from 45 to 80 °C. After the accident at the Fukushima Daiichi nuclear power plant, the need for a reliable cooling system for these pools increased, with thermosyphons emerging as a promising solution for passive cooling. The experimental procedure implemented in this study yielded a comprehensive understanding of the operation and phenomena inside a thermosyphon, providing crucial data for the validation and enhancement of numerical models that simulate relevant phenomena within nuclear power plants, including passive residual heat removal with thermosyphons. The results indicated that the optimal heat transfer performance was achieved at a filling ratio of 30%, where the thermosyphon begins operation at a heat source temperature of 45 °C. Additionally, the temperature distribution along the thermosyphon confirmed the operation limits, including partial dryout at a 20% filling ratio and geyser boiling and flooding (entrainment) limits at 75% and 100% filling ratios, respectively.

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Experimental study on thermal stratification in water pool with vertical heat source

Sekine,

Tsukamoto,

Masuhara

et al. 2024

Annals of Nuclear Energy

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Investigation on thermal-hydraulic characteristics of the spent fuel pool with a complete passive cooling system

Cited by 5 publications

References 34 publications

Research Progress on Thermal Hydraulic Characteristics of Spent Fuel Pools: A Review

Research Progress on Thermal Hydraulic Characteristics of Spent Fuel Pools: A Review

Experimental investigation of the heat transfer characteristics, operating limits, and temperature distribution of a prototypically 3 m long two-phase closed thermosyphon for spent fuel pool passive cooling

Experimental study on thermal stratification in water pool with vertical heat source

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