Air Supply System for Automotive Fuel Cell Application

Venturi, Massimo; Sang, Jochen; Knoop, Andreas; Hornburg, Gerald

doi:10.4271/2012-01-1225

Cited by 25 publications

(11 citation statements)

References 2 publications

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“…The radial compressor required for FCVs has characteristics of a small flow rate and high total pressure ratio (up to 2.0-4.0) in a single stage, which has a narrow working area and tends to work along the surge boundary. By properly increasing the gas supply flow rate and gas supply pressure [3,4,18], both the power density and efficiency of the FCS can be improved, as well as reduce the cost of the whole vehicle. Excessive gas supply pressures, however, can increase the power consumption and lower the output efficiency of the FCS.…”

Section: Introductionmentioning

confidence: 99%

A Novel Surface Parameterization Method for Optimizing Radial Impeller Design in Fuel Cell System

Liu

Fang

et al. 2021

Energies

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The aerodynamic performance improvement of radial impellers is of positive significance to improve the overall performance of hydrogen fuel cell systems (FCS). Our team proposes a multi-degree-of-freedom (MDOF) surface parameterization method for the global automatic optimization of radial impeller aerodynamics. The MDOF surface parameterization is characterized by fewer variables, construction ease, smoothness, good flexibility, and blade strength maintenance. In this paper, a radial impeller for a 100-kW fuel cell stack is optimized, showing the isentropic efficiency increase of 0.7%, the flow rate increase of 3.77%, and the total pressure ratio increase of 0.37%. The results revealed that the performance of the optimized radial impeller significantly improved, verifying the validity and reliability of the proposed novel design optimization method and providing technical support and methodological research of radial impeller aerodynamic optimization for hydrogen FCS.

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Section: Introductionmentioning

confidence: 99%

A Novel Surface Parameterization Method for Optimizing Radial Impeller Design in Fuel Cell System

Liu

Fang

et al. 2021

Energies

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“…The compressor technology is a constant displacement screw which through a clutch is connected to the electric motor. For more detailed description of air system and its challenges, read [3]. The performances of the air system are shown in figure 8.…”

Section: Main Hardwarementioning

confidence: 99%

Mercedes-Benz B-Class Fuel Cell: The world largest hydrogen vehicle fuel cell fleet experience

Venturi

Mohrdieck

Friedrich

2013

2013 World Electric Vehicle Symposium and Exhibition (EVS27)

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“…On the cathode side, a compressor is required. At the same time, the compression of the cathode gas (ambient air) consumes the largest amount of parasitic power in the whole system [4,5]. The main task of the cathode gas supply is to provide preconditioned cathode gas that has a temperature, humidity and pressure set according to the operation of the stack [6].…”

Section: Introductionmentioning

confidence: 99%

Impact of Condensation on the System Performance of a Fuel Cell Turbocharger

et al. 2022

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A mobile fuel cell systems power output can be increased by pressure amplification using an electric turbocharger. These devices are subject to frequent transient manoeuvres due to a multitude of load changes during the mission in automotive applications. In this paper, the authors describe a simulation approach for an electric turbocharger, considering the impact of moist air and condensation within the cathode gas supply system. Therefore, two simulation approaches are used: an iterative simulation method and one based on a set of ordinary differential equations. Additional information is included from turbine performance maps taking into account condensation using Euler–Lagrange CFD simulations, which are presented. The iterative calculation approach is well suited to show the impact of condensation and moist air on the steady state thermodynamic cycle and yields a significant shift of the steady state operating line towards the surge line. It is shown that a substantial risk of surge occurs during transient deceleration manoeuvres triggered by a load step.

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Air Supply System for Automotive Fuel Cell Application

Cited by 25 publications

References 2 publications

A Novel Surface Parameterization Method for Optimizing Radial Impeller Design in Fuel Cell System

A Novel Surface Parameterization Method for Optimizing Radial Impeller Design in Fuel Cell System

Mercedes-Benz B-Class Fuel Cell: The world largest hydrogen vehicle fuel cell fleet experience

Impact of Condensation on the System Performance of a Fuel Cell Turbocharger

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