Single/multi-objective optimization and comparative analysis of liquid-metal heat pipe

Article Thermodynamics

Experimental evaluation on heat transfer limits of sodium heat pipe with screen mesh for nuclear reactor system

Zhixing Tian et al.

Summary: This study investigates the heat transfer limits of heat pipes and evaluates the corresponding models. The experimental results provide references for heat pipe design and estimate the accuracy of the existing models.

APPLIED THERMAL ENGINEERING (2022)

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Article Nuclear Science & Technology

Heat transfer analysis of heat pipe cooled device with thermoelectric generator for nuclear power application

Jinlu Huang et al.

Summary: This paper demonstrates the reliability and safety of heat pipe cooled reactors through numerical simulation and experiments. The simulation results are in good agreement with the experimental results, and it is found that heat pipe failure can lead to adjacent heat pipe failures, while heat sink failure can cause a sharp increase in core temperature, potentially damaging the core.

NUCLEAR ENGINEERING AND DESIGN (2022)

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Article Thermodynamics

Numerical Modeling of a Wicked Heat Pipe Using Lumped Parameter Network Incorporating the Marangoni Effect

Jibin Joy Kolliyil et al.

Summary: This paper presents a numerical model of wicked heat pipes using a lumped parameter network, which is validated through experimental results. A parametric study is conducted to investigate the influence of heat input, wick thickness, and effective wick porosity on thermal resistance, as well as comparing heat pipes with water and self-rewetting fluids as working fluids. The study reveals that self-rewetting fluids perform better for wicked heat pipes.

HEAT TRANSFER ENGINEERING (2021)

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Article Nuclear Science & Technology

Numerical investigation on the startup performance of high-temperature heat pipes for heat pipe cooled reactor application

Yu-Chuan Guo et al.

Summary: A simplified model that integrates two-zone and network models was proposed in this study for fast calculation of transient characteristics of high-temperature heat pipe startup. Experimental validation showed the accuracy of the proposed model and determined essential requirements for successful startup.

NUCLEAR SCIENCE AND TECHNIQUES (2021)

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Article Nuclear Science & Technology

Code development and analysis on the operation of liquid metal high temperature heat pipes under full condition

Zhixing Tian et al.

Summary: In this paper, a mathematical model for high-temperature heat pipes transitioning from a frozen state to a steady state is developed and successfully simulated, taking into account vaporization and condensation at the liquid-vapor interface. Numerical results show that the model can accurately predict the operation of high-temperature heat pipes in steady state and during startup, providing valuable insights for design and application.

ANNALS OF NUCLEAR ENERGY (2021)

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Review Energy & Fuels

Advanced big-data/machine-learning techniques for optimization and performance enhancement of the heat pipe technology-A review and prospective study

Zhangyuan Wang et al.

Summary: The heat transfer performance of a heat pipe is highly dependent upon its geometrical and operational conditions, and existing computerized models are time-consuming and impractical. Machine learning algorithms and structured databases offer a potential solution for optimizing heat pipe structures and predicting performance.

APPLIED ENERGY (2021)

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Article Nuclear Science & Technology

Numerical investigation on startup characteristics of high temperature heat pipe for nuclear reactor

Zeqin Zhang et al.

Summary: This paper presents a three-stage frozen startup model that successfully describes the thermal behavior of heat pipes during the startup process. Numerical simulation confirms that under sonic limitation, NaK heat pipe can be successfully started with a final temperature of 834K.

NUCLEAR ENGINEERING AND DESIGN (2021)

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Article Nuclear Science & Technology

Experimental investigation on the heat transfer performance of high-temperature potassium heat pipe for nuclear reactor

Zhixing Tian et al.

Summary: Heat pipe cooled reactor (HPR) is considered a promising candidate for space power systems. This study experimentally investigated the heat transfer performance of potassium heat pipes under various conditions. The results show that heating power affects heat transfer within the capillary limit, while inclination angle has a strong impact on thermal efficiency. The study provides valuable insights for the design and application of high-temperature heat pipes in HPR systems.

NUCLEAR ENGINEERING AND DESIGN (2021)

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Article Thermodynamics

Thermal performance of U-shaped and L-shaped heat pipes

Mahboobe Mahdavi et al.

Summary: A comprehensive three-dimensional numerical model is developed to evaluate the effects of bending on the performance of both low temperature and high temperature heat pipes. The model shows that bending has a more significant impact on high temperature heat pipes at lower operating temperatures, and the effects are not significant if the wick is undamaged and there is no liquid flow blockage.

NUMERICAL HEAT TRANSFER PART A-APPLICATIONS (2021)

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Article Physics, Multidisciplinary