Nanoparticles-induced heterogeneous condensation and geometry optimizations to enhance liquefaction efficiency and mitigate exergy loss in a novel hydrogen liquefaction two-phase expander

Zhang, Guojie; Yang, Yifan; Zhang, Xinzhe; Zhang, Zebin; Chen, Jiaheng; Jin, Zunlong; Dykas, Sławomir

doi:10.1016/j.energy.2024.134006

Energy

2024

DOI: 10.1016/j.energy.2024.134006

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Nanoparticles-induced heterogeneous condensation and geometry optimizations to enhance liquefaction efficiency and mitigate exergy loss in a novel hydrogen liquefaction two-phase expander

Guojie Zhang,

Yifan Yang,

Xinzhe Zhang

et al.

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Research on the Internal Flow Mechanisms and Pressure Fluctuation Characteristics of Seawater Reverse Osmosis Energy Recovery Turbines

Bai,

Yang,

Yuan

et al. 2024

Energies

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Energy recovery turbines (ERTs) play an important role in reducing the energy consumption of seawater reverse osmosis (SWRO). The internal flow loss mechanisms and hydraulic vibration characteristics of a centrifugal ERT model used in SWRO were studied under multiple conditions. The results show that the high-efficiency range of the ERT tends toward high-flow conditions. The energy loss is mainly concentrated at the tongue in the volute, which is due to the generation of flow separation vortices. There is a flow separation phenomenon on the suction surface side of the blade, trailing under the 0.8Qd condition. The energy loss of the ERT is the lowest under the 1.0Qd condition, because the interaction between the fluid and the blades is the weakest. There are vortices formed by flow impact on the blade pressure surface under the 1.2Qd condition. There are vortices on the blade suction face, which are generated by fluid separation. The closer the relative liquid flow angle is to the blade settle angle, the smaller the energy loss is in the impeller. Therefore, the ERT should first reduce rated flow appropriately before hydraulic design, as this is beneficial for efficient operation under multiple conditions.

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Research on the Internal Flow Mechanisms and Pressure Fluctuation Characteristics of Seawater Reverse Osmosis Energy Recovery Turbines

Bai,

Yang,

Yuan

et al. 2024

Energies

View full text Add to dashboard Cite

show abstract

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Nanoparticles-induced heterogeneous condensation and geometry optimizations to enhance liquefaction efficiency and mitigate exergy loss in a novel hydrogen liquefaction two-phase expander

Cited by 1 publication

References 58 publications

Research on the Internal Flow Mechanisms and Pressure Fluctuation Characteristics of Seawater Reverse Osmosis Energy Recovery Turbines

Research on the Internal Flow Mechanisms and Pressure Fluctuation Characteristics of Seawater Reverse Osmosis Energy Recovery Turbines

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