Numerical and experimental investigation of enhanced heat transfer radiator through air deflection used in fuel cell vehicles

Gong, Chengyuan; Yingmeng, Du; Yu, Yi; Chang, Huawei; Luo, Xiaobing; Tu, Zhengkai

doi:10.1016/j.ijheatmasstransfer.2021.122205

Cited by 24 publications

(4 citation statements)

References 37 publications

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“…In terms of heat dissipation structure, Gong et al [26] studied the flow and heat transfer characteristics of Roewe 950 and Toyota Mirai (Figure 6). By increasing the area of the intake grille and optimizing the window opening angle of the radiator, the heat transfer coefficient could be improved, where a new windward bending structure was developed to improve the heat transfer rate of the radiator [27]. In terms of coolant, Zakaria et al [28] found that 40: 60 hybrid TiO 2 : SiO 2 nanofluid coolant enhanced cooling performance and reduced discharge intensity relative to the heat transfer rate at higher flow rates.…”

Section: Thermal Management Systemmentioning

confidence: 99%

A Review of Fuel Cell System Technology: From Fuel Cell Stack to System Integration

Ren

Shen²,

Li³

et al. 2022

IJAMM

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Review A Review of Fuel Cell System Technology: From Fuel Cell Stack to System Integration Weiqun Ren 1,*, Jun Shen 2, Xuebing Li 1, and Changqing Du 2 1 Dongfeng Commercial Vehicle Co. Ltd., 10 Dongfeng Avenue, Wuhan, China 2 Wuhan University of Technology, Wuhan, China * Correspondence: renweiqun@tsinghua.org.cn; Tel.: +86-139-1820-4209 Received: 14 October 2022 Accepted: 8 November 2022 Published: 18 December 2022 Abstract: The technology of hydrogen fuel cell vehicles (FCV) is the ultimate direction of clean energy vehicle development, and commercial vehicles are the most important application area for fuel cell commercialization. This paper summarizes the key components, technologies and development trends of the fuel cell stack, fuel cell system and vehicle integration at home and abroad, and points out that key materials (such as bipolar plates and membrane electrodes), key system components (such as air compressors and ejectors), high-power modular integration technologies, and fuel cell control technologies are the main factors influencing the commercialization of FCVs. Particularly, we put the main fouce on variable ejector or multi-stage ejector technology, integrated and optimized control technology, and multi-energy cooperative control technology due to their crucial roles in meeting the industrial development of FCVs in China. Furthermore, some guidance opinions are also provided for reference about the development and industrialization of FCVs.

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Section: Thermal Management Systemmentioning

confidence: 99%

A Review of Fuel Cell System Technology: From Fuel Cell Stack to System Integration

Ren

Shen²,

Li³

et al. 2022

IJAMM

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“…Excessive internal temperature in FC will affect the water content distribution, proton conductivity and service life of proton exchange membrane (PEM), which will lead to the formation of hot spot. [40][41][42] It is very important to arrange the cooling FF to make the FC in a stable temperature range. Song et al [43] designed five cooling FFs with different structures, and the results exhibited that the multi-spiral FF has the optimal heat transfer ability and temperature uniformity; Afshari et al [44] simulated the performance of cooling FF with baffles by finite volume method, and found that baffled cooling FF had appropriate pressure drop and reduced the maximum temperature of FC; Chen et al [45] proposed a multi-input and multi-out cooling FF, and the simulation results displayed that Z-shaped FF had better temperature distribution than U-shaped FF.…”

Section: Introductionmentioning

confidence: 99%

3D Numerical Simulation of Metal Bipolar Plate Proton Exchange Membrane Fuel Cell Considering Wavy Interlaced Flow Field

Zhang

et al. 2023

Energy Tech

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A metal bipolar plate fuel cell (FC) composed of gas distribution zones (GDZ) with ordered distribution of "dot matrix" structures, a complex waveform staggered fluid region, and the effect of cooling flow field (FF) is proposed in this investigation. The 3D multiphase model is applied to simulate the two-phase flow in the FC. First, the cathode catalyst layer (CCL) has a higher electrochemical reaction rate (ERR) when gas diffusion layer (GDL) is anisotropic, and the ERR under channels is much higher than ribs. Increasing the thickness of GDL is not conducive to gas mass transfer, and the maximum current density reduction rate is 2.94%. Increasing the porosity of GDL is beneficial to improve the mass transport efficiency, and the liquid discharge is promoted. Second, the increase of GDL contact angle affects the cathode microporous layer and liquid saturation in CCL, and the current density is the highest when the contact angle is 120°. Finally, the volume-of-fluid model is utilized to analyze the drainage process in the GDZ and cathode small-size FF. It is indicated in the results that water tends to concentrate at the outlet corner of GDZ in liquid form.

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“…The temperature rise problem of the hydraulic system is not only an important factor affecting the normal performance of the system, but also the temperature change will cause greater interference to the control accuracy [17]. Zhang [18] clarified the main heatgenerating and heat-dissipating components through experimental data, optimized the design of various parameters of the system and analyzed the influence on the thermal equilibrium temperature.…”

Section: Introductionmentioning

confidence: 99%

Research on Heat Generation Law and Cooling System Performance of Hydraulic System of Combined Machine Tool

Zhang,

Liu,

Tong

et al. 2023

Energies

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After the machine tool works continuously, the temperature of the hydraulic system continues to rise, which affects the work efficiency of the machine tool. Therefore, it is very important to control the temperature within a reasonable range. This paper proposes an improved scheme to replace a single fan with dual fans to improve the heat dissipation capacity of the radiator. Starting from the principle of heat exchange between oil and air, the relationship between the oil temperature and the wind speed on the face of the heat exchanger is derived, and the theoretical basis of the cooling system is given. Combined with logic control, the fan has the advantages of fast action, high efficiency and low energy consumption, which ensures the efficient and reliable operation of the machine tool. A one-dimensional simulation model of the thermal hydraulic system is established, and the heat generation and heat dissipation power of each element are calculated. Among them, the heat dissipation of the radiator is the largest, accounting for about 55% of the total heat dissipation. The experimental results show that the optimal fan speed is 3200 r/min and the flow rate is 0.2 m3/s at 26 °C. The thermal balance temperature of the hydraulic system is reduced from the original 65 °C to 58 °C, and its cooling capacity meets the requirements of a high-altitude and high-temperature environment.

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Numerical and experimental investigation of enhanced heat transfer radiator through air deflection used in fuel cell vehicles

Cited by 24 publications

References 37 publications

A Review of Fuel Cell System Technology: From Fuel Cell Stack to System Integration

A Review of Fuel Cell System Technology: From Fuel Cell Stack to System Integration

3D Numerical Simulation of Metal Bipolar Plate Proton Exchange Membrane Fuel Cell Considering Wavy Interlaced Flow Field

Research on Heat Generation Law and Cooling System Performance of Hydraulic System of Combined Machine Tool

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