Effect of rotational speed on unstable characteristics of lobe hydrogen circulating pump in fuel cell system

Dong, Liang; Zhou, Runze; Liu, Houlin; Zhang, Lixin; Dai, Cui; Mao, Yanhong; Hu, Jianbin

doi:10.1016/j.ijhydene.2022.04.248

Cited by 22 publications

(4 citation statements)

References 32 publications

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“…However, when the rotor rotates, the intake and exhaust volume may change periodically, creating uneven airflow and leading to pulsatile characteristics. Dong et al [75] adopted a dynamic grid as a means to calculate the rotor domain of the blade and studied the impacts of diverse speeds on the exhaust flow, transient pressure pulsation, external noise, and vibration. It was shown that when the pressure ratio is kept constant, the volume efficiency, vibration acceleration level (VAL), and the external noise are directly proportional to the lobe rotor speed.…”

Section: An Overview Of the Lobe 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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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 Lobe 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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“…This finding is similar with ref. [26], which reports that a two-blade roots pump produces four pressure pulsations over two cycles. This phenomenon can be mainly attributed to each blade compressing the same monitoring point twice during one rotation cycle, leading to an intensified pressure pulsation.…”

Section: Influence Of Working Clearances On Pressure Pulsationmentioning

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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“…Mathematical model of data mining is used for smart modeling. Results of the smart models trained by the given algorithm and results of the mathematical model mentioned in [47] are compared in the following sections.…”

Section: Stage 4: Evaluation Of the Proposed Model Based On The Test ...mentioning

confidence: 99%

Investigation of the Effects of Fuel Cells on V-Q & V-P Characteristics

Zadehbagheri¹,

Kiani

Sutikno

2022

Journal of Robotics and Control

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In this paper, the use of a FC system connected to the network is proposed as a source of DG with high reliability, and for this purpose, the dynamic model of the fuel cell has been simulated. A hybrid system of fuel cell distributed generation (FCDG) is presented to provide electrical energy for a small isolated area. Boost converter (DC/DC), in order to increase the voltage level of the system and stabilize the DC link voltage has been used, which provides the possibility of connecting several different scattered production sources in parallel. Voltage stability is concerned with the ability of a power system to maintain acceptable bus voltages under normal conditions and after being subjected to a disturbance. The use of DG sources has many advantages, including meeting peak load needs, reducing network losses, providing reactive power locally, and regulating network voltage. Among all sources of distributed production, fuel cells are of special importance due to their high efficiency, high energy density, the ability to simultaneously produce heat and electric power, and low emission of pollutants. Using fuel cells (FCs) have several advantages and in this paper we investigate the effects of FCs on power systems via simulation a single machine (DG as small gas turbine coupled with a FC) in the Dig Silent area for different PF of FC. Different PF for FC obtained with control the DC to AC inverter. We found that by control the PF of FCs, we can increase the limitation of reactive generation of overall system and improve the V-P V-Q characteristics of overall system. With the grid-connected inverter's switching control, the active and reactive power injected into the grid is controlled independently.

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Effect of rotational speed on unstable characteristics of lobe hydrogen circulating pump in fuel cell system

Cited by 22 publications

References 32 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

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

Investigation of the Effects of Fuel Cells on V-Q & V-P Characteristics

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