The study of passive cooling system assisted with separate heat pipe for decay heat removal in spent fuel pool

Lai, Kun; Wang, Wen; Yi, Chongchong; Kuang, Yiwu; Cheng, Ya

doi:10.1016/j.anucene.2017.08.062

Cited by 16 publications

(4 citation statements)

References 26 publications

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“…Due to the height difference of the loop, the third type is rarely used. Lai et al [58] discussed the convection heat transfer of the condenser of a largescale separated single heat pipe PCS and pointed out that the arrangement of the cooling tower can enhance the flow and heat transfer capacity. The fin spacing, fin height, outlet temperature of the cooling tower and inlet velocity of the cooling air are the key factors affecting the heat transfer performance.…”

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 two-phase frictional pressure drop, the homogeneous model is used. Therefore, the calculation process is similar Equation (11) and Equation (12), in which the two-phase Reynold number should be used.…”

Section: Flow and Momentum Conservationmentioning

confidence: 99%

“…Then it flows back to evaporator. 12 Fu et al 13 numerically investigated the passive cooling system and temperature distribution in SFP. It was found that temperature uniformity was fairly well and the maximum water temperature in SFP was 81 C (354.15 K) when the passive cooling system functions.…”

Section: Introductionmentioning

confidence: 99%

Modeling and numerical investigation on the effects of filling ratio in a large separate heat pipe loop

Kuang

Wang

2021

Intl J of Energy Research

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Large separate heat pipe is a potential selection to establish the passive cooling system to remove decay heat from the Spent Fuel Pool. In this system, heat pipes are expected to work properly and effectively for a long time without human intervention. Due to the physical dimensions and structures, flow patterns, and fluid distribution in large-scale heat pipes differ from those in conventional ones. Based on the condensation flow patterns, a flow condensation model is presented. Then, a separate heat pipe model considering filling ratio effects is developed. Using the new model, the mean absolute errors of simulation are 5.5% (water), 5.1% (ammonia), and 4.3% (R134a). While in the conventional condensation model, these errors are 29.4%, 9.7%, and 10%. It is found

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“…Ambient air is drawn upward by condenser tubes due to buoyancy or density difference, and cools the condenser accordingly. This kind of passive cooling technology is adopted in the third generation pressurized water reactor (Lai et al [2]) and the fourth generation molten salt reactor (Zhao et al [3] and Wu et al [4]) to enhance inherent safety of the nuclear power plant. Besides, it is extensively deployed in natural draft dry cooling tower to eliminate parasitic loss and save the operational cost in coal-fired (Kröger [5]) and geothermal (Hooman [6]) power plants.…”

Section: Introductionmentioning

confidence: 99%

Natural convection heat transfer and fluid flow in a thermal chimney with multiple horizontally-aligned cylinders

et al. 2022

International Journal of Heat and Mass Transfer

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The study of passive cooling system assisted with separate heat pipe for decay heat removal in spent fuel pool

Cited by 16 publications

References 26 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

Modeling and numerical investigation on the effects of filling ratio in a large separate heat pipe loop

Natural convection heat transfer and fluid flow in a thermal chimney with multiple horizontally-aligned cylinders

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