Effect of thermal deformation on leakage clearance of claw hydrogen circulating pump for fuel cell system

Liu, Guangbin; Yang, Qinwen; Zhao, Yang; Li, Liansheng

doi:10.1016/j.ijhydene.2022.06.196

Cited by 19 publications

(5 citation statements)

References 28 publications

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“…The 3D model is illustrated in Figure 13. A three-dimensional mathematical model was established by Kairui Dong [67,68] for a hydrogen circulating pump. They calculated the meshing clearance distribution between two rotors at different angles, the circumferential clearance distribution at different positions, and considered the influence of the suction pressure, discharge pressure, rotational speed, and clearance on the volumetric efficiency, providing theoretical guidance A three-dimensional mathematical model was established by Kairui Dong [67,68] for a hydrogen circulating pump.…”

Section: An Overview Of the Claw Hydrogen Circulation Pumpmentioning

confidence: 99%

“…A three-dimensional mathematical model was established by Kairui Dong [67,68] for a hydrogen circulating pump. They calculated the meshing clearance distribution between two rotors at different angles, the circumferential clearance distribution at different positions, and considered the influence of the suction pressure, discharge pressure, rotational speed, and clearance on the volumetric efficiency, providing theoretical guidance A three-dimensional mathematical model was established by Kairui Dong [67,68] for a hydrogen circulating pump. They calculated the meshing clearance distribution between two rotors at different angles, the circumferential clearance distribution at different positions, and considered the influence of the suction pressure, discharge pressure, rotational speed, and clearance on the volumetric efficiency, providing theoretical guidance for the research as well as structural optimization of the hydrogen circulating pump.…”

Section: An Overview Of the Claw Hydrogen Circulation Pumpmentioning

confidence: 99%

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A Review of the Research Progress and Application of Key Components in the Hydrogen Fuel Cell System

Li,

Wu,

Cheng

et al. 2024

Processes

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The hydrogen cycle system, one of the main systems used for hydrogen fuel cells, has many advantages. It can improve the efficiency, the water capacity, and the management of thermal fuel cells. It can also enhance the safety of the system. Therefore, it is widely used in hydrogen fuel cell vehicles. We introduce the structure and principles of hydrogen cycle pumps, ejectors, and steam separators and analyze and summarize the advantages of the components, as well as reviewing the latest research progress and industrialization status of hydrogen cycle pumps and ejectors. The technical challenges in hydrogen circulation systems and the development direction of key technologies in the future are discussed. This paper aims to provide a reference for research concerning hydrogen energy storage application technology in hydrogen fuel cell systems.

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Section: An Overview Of the Claw Hydrogen Circulation Pumpmentioning

confidence: 99%

Section: An Overview Of the Claw Hydrogen Circulation Pumpmentioning

confidence: 99%

A Review of the Research Progress and Application of Key Components in the Hydrogen Fuel Cell System

Li,

Wu,

Cheng

et al. 2024

Processes

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“…Pan [8] et al proposed a new type of three-claw rotor and outlet, and the results showed that this new type of rotor had the advantages of high internal volume ratio, small relative carryover, and would not carryover the process. Dong [9] et al investigated the effect of thermal deformation on the leakage gap of a claw-type hydrogen circulating pump for fuel cells, and the results showed that the total leakage gap increased firstly and then decreased with the increase of the angle. Wang [10] et al proposed a new type of eccentric involute claw-type rotor, and the results showed that the new type of eccentric involute clawtype rotor greatly improves the performance of the pump, and effectively mitigates the negative effects of the mixing process.…”

Section: Introductionmentioning

confidence: 99%

Design and numerical simulation of elliptical claw-type hydrogen circulation pump rotor

Feng,

Quan,

Wang

2024

J. Phys.: Conf. Ser.

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The claw-type hydrogen circulation pump has the advantages of smooth gas delivery, wide range of adapted working conditions, high efficiency, etc., which is the key equipment of the fuel cell system. In this paper, a new type of elliptical claw rotor is proposed by the combination of elliptical line, circular arc and pendulum line, and the equation of the line is calculated and deduced, and the distribution law of the flow field in the working chamber is obtained based on numerical simulation, and the internal flow characteristics, the working process, the change rule of the pressure, speed and the resisting moment are analysed. The results show that the elliptical claw rotor is subjected to a smaller gas resisting moment compared with the traditional cycloidal hydrogen circulating pump.

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“…They concluded that increasing the working clearance can effectively reduce the amplitude through their analysis. Dong et al [ 20 ] examined the influence of leakage clearance on performance and reliability of claw hydrogen circulation pump, obtaining the distribution of leakage clearance at various temperatures and rotor materials. Their findings indicated that radial leakage clearance decreased as temperature in the working chamber increased.…”

Section: Introductionmentioning

confidence: 99%

Flow Field Analysis and Performance Study of a Hydrogen Circulation Pump for Proton Exchange Membrane Fuel Cell Vehicles with Different Working Clearances

Liang,

Pang,

Liu

et al. 2024

Energy Tech

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This study investigates the impact of working clearances on the internal flow field, pressure pulsations, flow pulsations, and radial forces experienced by a hydrogen circulation pump. Numerical calculations are conducted on seven sets of distinct working clearances for the pump. The research findings demonstrate that an increase in meshing clearance and radial clearance results in higher leakage flow rate during the compression exhaust process, leading to a decrease in hydrogen circulation pump's exhaust flow rate. When the meshing clearance increases from 0.15 to 0.21 mm, the actual exhaust flow rate of the pump decreases from 37.46 to 32.73 m3 h−1. Similarly, when the radial clearance increases from 0.18 to 0.24 mm, the actual exhaust flow rate of the pump decreases from 42.46 to 29.71 m3 h−1. Additionally, with an increase in meshing clearance, both the radial forces Fx and Fy of the active rotor exhibit a downward trend. Yet, as radial clearance grows, the radial force Fx slightly descends, while the change trend of radial force Fy is first positive decrease and then reverse increase.

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Effect of thermal deformation on leakage clearance of claw hydrogen circulating pump for fuel cell system

Cited by 19 publications

References 28 publications

A Review of the Research Progress and Application of Key Components in the Hydrogen Fuel Cell System

A Review of the Research Progress and Application of Key Components in the Hydrogen Fuel Cell System

Design and numerical simulation of elliptical claw-type hydrogen circulation pump rotor

Flow Field Analysis and Performance Study of a Hydrogen Circulation Pump for Proton Exchange Membrane Fuel Cell Vehicles with Different Working Clearances

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