The low-enriched uranium core design of a MW heat pipe cooled reactor

Wu, Yunqin; Zheng, Youqi; Tao, Yushan; Liu, Xiaoyue; Du, Xianan; Wang, Yongping

doi:10.1016/j.nucengdes.2023.112195

Cited by 11 publications

(4 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A New Nuclear Power Plant Coupled with Supercritical CO2 Brayton Cycle for Ocean Heat Pipe Reactors [20] The figure (a) in figure 5 shows the hexagonal arrangement heat pipe unit structure proposed by the United States, and the figure (b) shows the NUSTER-100 square arrangement heat pipe unit structure proposed by Xi'an Jiaotong University in China. A nuclear engineering computational physics team from China has proposed an unmanned portable silent reactor [9] , which can meet the requirements of high reliability, high safety, and ultra quiet applications, with a thermal power of up to 1MW. The service life of the core exceeds five years.…”

Section: Construction and Development Of Heat Pipe Reactor Energy Systemmentioning

confidence: 99%

“…based on the different application objects and power requirements. At present, NUSTER-100 [7] , megawatt level efficient and compact new marine nuclear power plants [8] , and unmanned portable silent reactors [9] are designed and applied to UUVs, which provides important solution support for the application of heat pipe stacks in UUVs. This article mainly studied the following content: 1) Quantitative comparison of the output power of traditional batteries and heat pipe stacks used for UUVs, visually demonstrating the excellent endurance of heat pipe stacks.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Preliminary Study on the Application of Heat Pipe Reactor in Unmanned Underwater Vehicles

Zhao,

Chen,

Sheng

et al. 2024

E3S Web Conf.

View full text Add to dashboard Cite

At the beginning of the 21st century, due to the re-proposal of the United States space exploration program, heat pipe reactors once again received widespread attention from researchers. With their long lifespan, high energy density, and inherent safety features, they exhibit promising prospects for application in space nuclear reactors, land-based mobile nuclear power sources, and deep-sea unmanned equipment exploration. Consequently, they represent an ideal novel energy source for unmanned underwater vehicles (UUVs). This article selected the SUBOFF submarine model as a basis to calculate UUVs’ navigation resistance at various speeds using the 1+k method. By comparing the converted UUVs navigation power demand with that of traditional batteries and heat pipe stacks’ output power, it was concluded that heat pipe reactors offer superior power supply and endurance capabilities. Subsequently, based on the structural characteristics of the heat pipe stack, this study summarized battery advantages and characteristics while also addressing construction and development aspects of heat pipe stack energy systems. Furthermore, the key technologies that need to be overcome in the application of heat pipe stacks in UUVs are introduced. Through the formula of heat transfer limit of heat pipe, the factors that limit the heat transfer performance of heat pipe are analyzed, and the positive correlation among the number of heat pipe, heat transfer limit and heat transfer power was obtained. Finally, the challenges faced by the future application of heat pipe stacks in UUVs were pointed out.

show abstract

Section: Construction and Development Of Heat Pipe Reactor Energy Systemmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Preliminary Study on the Application of Heat Pipe Reactor in Unmanned Underwater Vehicles

Zhao,

Chen,

Sheng

et al. 2024

E3S Web Conf.

View full text Add to dashboard Cite

show abstract

“…The average enrichment of refueling assembly is 4.95 w/o (excluding the axial blanket), and the refueling assembly in each cycle is in the same position. In order to improve the utilization rate of neutrons and flatten the axial power distribution [6], the enrichment of the axial blanket at both ends of the fuel rod is set to 3.20 w/o, and the 101.6mm fuel pellets between the active and axial blanket do not contain IFBA.…”

Section: Description Of the Core Rmsmentioning

confidence: 99%

Simulation Study on Long Cycle Refueling Management Strategy of Haiyang Nuclear Power Plant

Zhang

2023

Advances in Transdisciplinary Engineering

View full text Add to dashboard Cite

Based on the initial design of 64 groups of refueling assembly at Haiyang Nuclear Power Plant (HNPP), a long-term refueling management strategy (RMS) study was conducted using the COSINE software package, and a refueling management plan for 92 groups of new fuel assembly was designed. On this basis, simulation calculations were conducted on the main core parameters of the 3rd to 8th cycles, and universal design limits were verified. The simulation calculation results show that HNPP has the refueling capability of 92 new fuel assembly, and the designed refueling plan satisfies the design limits and requirements.

show abstract

“…In our previous work, based on the OpenMC model of one-sixth of the MegaPower core (Guo et al, 2021), a moderated megawatt-class HPR core design has been proposed to increase the power density and reduce fuel loading, core volume, and weight (Feng et al, 2022). Other research has also evaluated the effectiveness of various moderator materials such as matrix graphite, yttrium hydride, and uranium-zirconium hydride (Li et al, 2022;Li et al, 2023;Wu et al, 2023).…”

Section: Introductionmentioning

confidence: 99%

Multiphysics analysis of a metal hydride moderated megawatt heat pipe reactor with burnable poisons

Feng,

Hu,

Wang

et al. 2024

Front. Energy Res.

View full text Add to dashboard Cite

With the development of nuclear energy, microreactors have received increasing interest among researchers in recent years. In this paper, a megawatt heat pipe reactor with metal hydride moderators and burnable poisons is proposed. The hydrogen stability of the reactor under accident conditions, including reactivity insertion accidents, loss of power conversion unit heat sink accidents, and heat pipe failure accidents are analyzed. In this work, Gd2O3 is introduced as a burnable poison in the form of mixing with the UO2 fuel. According to the results of the burnable poison design, the 0.1% mass fraction of Gd2O3 is selected as the burnable poison loaded in the core. Safety analysis indicates that the introduction of burnable poisons can be beneficial during the positive reactivity insertion accident as it can reduce the excessive reactivity at BOL, thus reducing power peak and preventing hydrogen dissociation in ZrH1.4 rods. However, during the loss of PCU heat sink accident, ZrH1.4 rods will dissociate regardless of the presence of burnable poisons, whereas YH1.7 rods show better hydrogen stability. Moreover, in the event of the heat pipe failure accident, ZrH1.4 rods are more susceptible to dissociation than YH1.7 rods. As a result, the YH1.7+BP core is a better choice compared with other designs proposed in this paper as it provides a relatively high temperature margin.

show abstract

The low-enriched uranium core design of a MW heat pipe cooled reactor

Cited by 11 publications

References 8 publications

Preliminary Study on the Application of Heat Pipe Reactor in Unmanned Underwater Vehicles

Preliminary Study on the Application of Heat Pipe Reactor in Unmanned Underwater Vehicles

Simulation Study on Long Cycle Refueling Management Strategy of Haiyang Nuclear Power Plant

Multiphysics analysis of a metal hydride moderated megawatt heat pipe reactor with burnable poisons

Contact Info

Product

Resources

About