Performance Improvement of a Liquid Molten Salt Pump: Geometry Optimization and Experimental Verification

Wang, Kai; Lu, Xin; Yu, Li; He, Xianghui; Liu, Houlin; Kim, Hyoung-Bum

doi:10.3390/sym11030423

Cited by 6 publications

(3 citation statements)

References 10 publications

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“…-Charge pumps: These pumps are used to fill the storage tank with molten salt at the beginning of a storage cycle [14]. They are typically centrifugal pumps [19] and are designed to handle the high temperatures and corrosive nature of molten salt. -Circulation pumps [20]: Circulation pumps are utilized to move the molten salt through the system during charging and discharging cycles when the storage tank is filled.…”

Section: Pumpsmentioning

confidence: 99%

Molten Salt Thermal Energy Storage for Renewable Energy: System Design, Materials, and Performance

Sterjova,

Minovski

2023

Etima 2023

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This research paper thoroughly examines the fundamental principles and design concepts of molten salt thermal energy storage systems, focusing on the critical role of materials selection in choosing the appropriate material for the application. We also discuss the basic design components of these systems when integrated with renewable technology and classify practical systems by their applications. Based on our analysis, we conclude that solar technologies with molten salt storage systems are particularly promising for practical implementation, and the two-reservoir type system utilizing the sensible heat storage method of molten salt is regarded as the most commercially viable and mature electrothermal storage system available. Solar salt is also considered the best choice for these systems due to its low cost and high energy density. The idea of retrofitting fossil fuel plants with molten salt storage systems is also mentioned. Overall, molten salt thermal energy storage systems have the potential to play a crucial role in future energy systems, and further research and development in this field is essential for maximizing the potential of these systems and achieving a sustainable energy future.

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Section: Pumpsmentioning

confidence: 99%

Molten Salt Thermal Energy Storage for Renewable Energy: System Design, Materials, and Performance

Sterjova,

Minovski

2023

Etima 2023

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“…Wang et al [5] combined numerical methods with experimental research to optimize and improve the hydraulic structure, thereby enhancing the hydraulic efficiency of liquid molten salt pumps. Li et al [6] made adjustments to the hydraulic structure of long-axis molten salt pumps to reduce the radial forces on the volute. Zhu [7] compared and analyzed the distribution of static pressure in molten salt pumps under different operating conditions, explaining the influence of particle size and volume fraction on the pressure pulsation characteristics in the time and frequency domains within the molten salt pump.…”

Section: Introductionmentioning

confidence: 99%

High-temperature molten salt circulating cold salt pump shaft system prestress response analysis research

Gao,

Zhao,

Zhu

et al. 2024

J. Phys.: Conf. Ser.

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To investigate the response characteristics of the rotor system in a high-temperature molten salt pump, a specific model of a cold salt pump was selected as the research object. The natural frequencies and mode shapes, critical speeds, and harmonic response analysis based on modal analysis of the rotor system with and without prestress were computed. The results indicate that with prestress, the natural frequencies of the rotor are higher compared to the rotor without prestress, and there is no clear pattern among the various vibration modes. The calculated critical speed for the second mode is much higher than the rotor’s operating speed. This suggests that the rotor system will not experience resonance at its operating speed, meeting design requirements and ensuring stable operation. When the rotor of the cold salt pump is subjected to unbalanced forces, vibrations occur in the x, y, and z directions. The region with the largest vibration amplitude is located at the fifth-stage impeller. At a frequency of 52 Hz, the corresponding harmonic response displacement reaches its maximum value, and this frequency remains unchanged with variations in the magnitude and position of the unbalanced force. Therefore, it is advisable to avoid operating the rotor system at the critical speeds corresponding to the first and second modes. Furthermore, the operating speed of the rotor system is much lower than the critical speeds corresponding to the first and second modes, so axial unbalanced forces generally do not affect the normal operation of the rotor system.

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“…With the development of science and technology, hydraulic performance, operation stability and reliability of centrifugal pumps with a vaned-diffuser are given increasing attention. Wang et al [1][2][3] numerically improved a centrifugal pump with vaned-diffuser by using of trimming back-blades of impeller and smoothing sharp corner in annular chamber to enhance efficiency of the pump, and accomplished experiments focusing on energy performances and vibration characteristics to verify the effectiveness of the improvement results. Guo et al [4] implemented experimental measurement of pressure fluctuation (PF) and the vibration of impeller of centrifugal pump with a vaned-diffuser.…”

Section: Introductionmentioning

confidence: 99%

Experimental Analysis on Pressure Fluctuation Characteristics of a Centrifugal Pump with Vaned-Diffuser

Liu

Xia

Wang

et al. 2019

Water

Self Cite

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Experimental measurements to analyze the pressure fluctuation performance of a centrifugal pump with a vaned-diffuser, which its specific speed is 190. Results indicate that the main cause of pressure fluctuation is the rotor-stator interference at the impeller outlet. The head of the pump with vaned-diffuser at the design flow rate is 15.03 m, and the efficiency of the pump with a vaned-diffuser at the design flow rate reaches 71.47%. Pressure fluctuation decreases gradually with increasing distance from the impeller outlet. Along with the increase of the flow rate, amplitude of pressure fluctuation decreases. The amplitude of pressure fluctuation at the measuring points near the diffusion section of the pump body is larger than other measuring points. The variation tendency of pressure fluctuation at P1–P10 is the same, while there are wide frequency bands with different frequencies. The dominant frequency of pressure fluctuation is the blade passing frequency. The rotor-stator interference between the impeller and the vaned-diffuser gives rise to the main signal source of pressure fluctuation.

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Performance Improvement of a Liquid Molten Salt Pump: Geometry Optimization and Experimental Verification

Cited by 6 publications

References 10 publications

Molten Salt Thermal Energy Storage for Renewable Energy: System Design, Materials, and Performance

Molten Salt Thermal Energy Storage for Renewable Energy: System Design, Materials, and Performance

High-temperature molten salt circulating cold salt pump shaft system prestress response analysis research

Experimental Analysis on Pressure Fluctuation Characteristics of a Centrifugal Pump with Vaned-Diffuser

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