Thermodynamics Investigation and Spike-stall Identification Based on Energy Loss of Centrifugal Compressor

Hu, Chenxing; Geng, Kaihe; Yang, Ce; Zhou, Mi; Chen, Hua

doi:10.1016/j.ijheatmasstransfer.2020.120693

Cited by 10 publications

(2 citation statements)

References 36 publications

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“…The high-speed, oil-free centrifugal air compressor plays a crucial role as part of the cathode air system in HFCVs [11]. Nevertheless, the existing air compressors employed in hydrogen-powered vehicles encounter challenges related to increased energy consumption [12] and reduced mass flow rates [13].…”

Section: Introductionmentioning

confidence: 99%

Performance Assessment and Optimization of the Ultra-High Speed Air Compressor in Hydrogen Fuel Cell Vehicles

Shi,

Peng

2024

Applied Sciences

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Air compressors in hydrogen fuel cell vehicles play a crucial role in ensuring the stability of the cathode air system. However, they currently face challenges related to low efficiency and poor stability. To address these issues, the experimental setup for the pneumatic performance of air compressors is established. The effects of operational parameters on energy consumption, efficiency, and mass flow rate of the air compressor are revealed based on a Morris global sensitivity analysis. Considering a higher flow rate, larger efficiency, and lower energy consumption simultaneously, the optimal operating combination of the air compressor is determined based on grey relational multi-objective optimization. The optimal combination of operational parameters consisted of a speed of 80,000 rpm, a pressure ratio of 1.8, and an inlet temperature of 18.3 °C. Compared to the average values, the isentropic efficiency achieved a 48.23% increase, and the mass flow rate rose by 78.88% under the optimal operational combination. These findings hold significant value in guiding the efficient and stable operation of air compressors. The comprehensive methodology employed in this study is applicable further to investigate air compressors for hydrogen fuel cell vehicles.

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Section: Introductionmentioning

confidence: 99%

Performance Assessment and Optimization of the Ultra-High Speed Air Compressor in Hydrogen Fuel Cell Vehicles

Shi,

Peng

2024

Applied Sciences

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“…The friction loss had a significant impact on both the pressure ratio and the efficiency. Hu [5] obtained that impeller incidence loss and friction loss are the main factors affecting compressor performance. Friction loss decreases when impeller incidence loss increases.…”

Section: Introductionmentioning

confidence: 99%

Sensitivity Analysis of One-Dimensional Performance Prediction for Centrifugal Compressor

Tang

Zhang

Liu

et al. 2022

J. Phys.: Conf. Ser.

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To explore the sensitivity sorting of a one-dimensional performance prediction model, a high-load centrifugal compressor is studied. Using the Latin Hypercube method, the influencing factors of the one-dimensional performance prediction model are designed. Based on the sensitivity analysis of ANOVA, the main influencing factors of compressor pressure ratio and efficiency performance are investigated, and guidance for compressor optimization is proposed. The results show that the main factors affecting the pressure ratio are deviation loss, radial diffuser incidence loss, and impeller blockage loss. The main factors affecting the efficiency are radial diffuser incidence loss, radial diffuser blockage loss, and radial diffuser choke loss. Finally, the optimal coefficients corresponding to the loss models are obtained based on the sensitivity sorting results. Compared with the corresponding three-dimensional numerical simulation, the error of pressure ratio and efficiency near the design condition is within 1%, which indicates that the presented method can achieve the accurate design and off-design performance prediction.

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Flow Loss Mechanism in a Supercritical Carbon Dioxide Centrifugal Compressor at Low Flow Rate Conditions

Yang,

Jiang,

Zhuge

et al. 2023

J. Therm. Sci.

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Thermodynamics Investigation and Spike-stall Identification Based on Energy Loss of Centrifugal Compressor

Cited by 10 publications

References 36 publications

Performance Assessment and Optimization of the Ultra-High Speed Air Compressor in Hydrogen Fuel Cell Vehicles

Performance Assessment and Optimization of the Ultra-High Speed Air Compressor in Hydrogen Fuel Cell Vehicles

Sensitivity Analysis of One-Dimensional Performance Prediction for Centrifugal Compressor

Flow Loss Mechanism in a Supercritical Carbon Dioxide Centrifugal Compressor at Low Flow Rate Conditions

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