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

Guo, Yuchuan; Su, Zilin; Li, Zeguang; Wang, Kan

doi:10.1007/s41365-021-00947-2

Cited by 16 publications

(2 citation statements)

References 19 publications

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“…Compared with the pressurized water reactor, fast reactor, and other types of reactors, the selected components have a more compact design and can save space because they omit mechanical parts such as pumps and valves. The heat pipe [3][4][5] is used as the heat export mode, which has passive and excellent startup characteristics and can achieve higher reliability and safety than conventional reactors. The thermal expansion effect and thermal stress effect of the selected reactor are very significant, and thermal engineering problems need to be carefully considered in the design and calculation stage of the reactor core.…”

Section: Introductionmentioning

confidence: 99%

Study on heat transfer failure time effect energy of lithium heat pipe

Zhang,

Zhou,

Liu

et al. 2023

J. Phys.: Conf. Ser.

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Studying the efficiency of lithium heat pipe above 1000K in case of problems is of considerable value for mastering and controlling its safety. We use COMSOL software to model and calculate a single element above 1000 K, and calculate and analyze its various parameter changes under fault conditions. According to different situations that should be classified and discussed, the cold end fluid temperature and corresponding heat transfer coefficient in the lower temperature area, as well as the temperature situation at the other end, should be separately considered. Based on the calculated results, it is discussed that they all undergo linear and proportional changes with the target parameters, and the fluid situation on the lower temperature side has the smallest impact on these target results. The maximum temperature of the module will reach 1900K, and materials that can withstand 1900K need to be selected during design.

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Section: Introductionmentioning

confidence: 99%

Study on heat transfer failure time effect energy of lithium heat pipe

Zhang,

Zhou,

Liu

et al. 2023

J. Phys.: Conf. Ser.

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“…Jibin et al 5 improve the network thermodynamic model of a heat pipe and considers the effect of Marangoni flow on the heat pipe performance. Tian et al, 6 Zhang et al, 7 and Guo et al 8 develop transient heat pipe models considering the working fluid flow. Mahdavi et al 9 present a three-dimensional heat pipe model to evaluate the effects of bending on the heat pipes.…”

Section: Introductionmentioning

confidence: 99%

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

Tian

Liu

Wang

et al. 2022

Intl J of Energy Research

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Heat pipes utilize the latent heat of vaporization and lie on the capillary forces to maintain the circulation of working fluid. High-temperature heat pipes applied in the nuclear silent thermal-electrical reactor are investigated and optimized. Nine wick structures and several design variables are investigated in the single/multi-objective optimization. The improved network thermodynamic model of a heat pipe is adopted, and the thermal resistance, mass, and transport capacity of wicks are selected as the objective functions. Multiobjective optimization results are obtained by Pareto-optimal points.Comparative results reveal that mesh screen and annular artery present a better performance (0.00180 K/W) in both single and multiple objective optimizations. Potassium is preferred for the wick of the circular artery and rectangular artery, while sodium is preferred for the wick of isosceles-triangular groove and sintered fibers. And with the operating temperature (800 ~950 K), thermal resistance is decreased with the simultaneous rise of mass (165.2%) and transport capacity (154.6%) in the mesh screen. This work makes it possible to improve the operational performance of a heat pipe and provides a reference for the selection of wick structure and heat pipe design.

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CFD Analysis on the Multiphase Flow of the Wickless Sodium Heat Pipe with Non-condensable Gas

Guo

et al. 2023

Springer Proceedings in Physics

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

Cited by 16 publications

References 19 publications

Study on heat transfer failure time effect energy of lithium heat pipe

Study on heat transfer failure time effect energy of lithium heat pipe

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

CFD Analysis on the Multiphase Flow of the Wickless Sodium Heat Pipe with Non-condensable Gas

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