Research on the in-plane temperature distribution in a PEMFC stack integrated with flat-plate heat pipe under different startup strategies and inclination angles

Huang, Bi; Jian, Qifei; Luo, Lizhong; Bai, Xueyan

doi:10.1016/j.applthermaleng.2020.115741

Cited by 37 publications

(9 citation statements)

References 17 publications

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“…The titanium flat heat pipe being 1.19 mm thick has an effective thermal conductivity of 20447 W/(m•k), which meets the cooling requirements for high-power PEMFCs, and the lightweight titanium ones can reduce the volume and weight of PEMFC stacks. Huang et al 56 integrated a 1.5 mm thick sintered copper core flat-plate MHP into the PEMFC stack. Forced convection was used in the condensation section of the heat pipe.…”

Section: Micro Heat Pipe Coupled Proton Exchange Membrane Fuel Cellmentioning

confidence: 99%

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A Review of MHP Technology and Its Research Status in Cooling of Li-Ion Power Battery and PEMFC

Chang

et al. 2020

Energy Fuels

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A lithium-ion (Li-ion) power battery and proton exchange membrane fuel cell (PEMFC) have an excellent electrical conversion performance, which makes them a hot spot in the new energy power research field. Electricity is generated inside the battery through an electrochemical reaction, during which time a large amount of heat is also generated. The ideal operating temperature of a Li-ion battery and PEMFC falls into a small range, but the operations require a high temperature uniformity. Efficient cooling technology can be used to timely discharge the heat generated and control the temperature field change inside the battery, thus ensuring the battery's efficient and stable performance. The micro heat pipe (MHP) is currently a more efficient passive cooling equipment with high heat fluxes and a high thermal conductivity through the phase change heat transfer of working fluid. The development and research status of an MHP and its application in the cooling of a Li-ion power battery and PEMFC are reviewed in this paper.

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Section: Micro Heat Pipe Coupled Proton Exchange Membrane Fuel Cellmentioning

confidence: 99%

“…For PEMFC, the power consumption of pumped liquid is as high as 5−10% of the power generation. 56 Moreover, the coolant of PEMFC has a high demand for water, which needs deionization treatment. Liquid cooling systems generally include water pumps, water tanks, radiators, fans, pipes, control system, etc.…”

Section: Introductionmentioning

confidence: 99%

A Review of MHP Technology and Its Research Status in Cooling of Li-Ion Power Battery and PEMFC

Chang

et al. 2020

Energy Fuels

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“…The design of bipolar plates has an important influence on the reactant gas distribution of fuel cells. Not only can a suitable flow field improve fuel cell performance, but it can also reduce water flooding and improve fuel efficiency [1][2][3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Performance Enhancement of PEM Fuel Cells with an Additional Outlet in the Parallel Flow Field

et al. 2021

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The design of bipolar plates is critical for improving the performance of proton exchange membrane fuel cells (PEMFCs). In this research, a new additional outlet based on a PEMFC’s parallel flow field was proposed, and three different positions of outlet were designed on the target side of gas flowing in parallel channels. The results revealed that the additional outlets are able to increase the gas speed through channels near the additional outlets, which results in a lower water saturation and a more uniform distribution of oxygen concentration at the interface between the catalyst layer (CL) and gas diffusion layer (GDL). With the variation of the outlet position in the target side, it was found that the additional outlet set in the middle of the target side exhibits the highest increase of peak power density, namely, 13%. Furthermore, the optimal position of the additional outlet was proved to be suitable for PEMFCs with various active surface areas, indicating the universality of the present results in the study.

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“…However, liquid cooling requires a large coolant flow rate, which increases the parasitic power consumption of the cooling system. The power consumption of pumping liquid is as high as 5-10% of the power generation, and the temperature difference between the inlet and outlet of the coolant is large, resulting in the uneven internal temperature distribution in a PEMFC [13]. The micro heat pipe is called a superconductor because of its high thermal conductivity, which uses the latent heat of vapor-liquid phase change and the sensible heat of forced convection [14].…”

Section: Introductionmentioning

confidence: 99%

“…It was found that the heat pipe showed excellent performance in both heating and cooling, which improved the temperature uniformity and increased current density of the stack. Huang et al [13] integrated flat-plate heat pipes into PEMFC for PEMFC cooling. The experiment showed that the flat-plate heat pipes can remove the heat successfully.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation on the Operating Characteristics of Flat-Plate CLPHP for PEMFC Cooling

Li¹,

Chang²,

Zhao³

2021

WEVJ

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Proton exchange membrane fuel cell (PEMFC) generates electricity through hydrogen and oxygen chemical reaction with the generation of much heat. According to the working temperature of PEMFC, the thermal resistance and internal relative pressure change of the flat-plate micro closed-loop pulsating heat pipe (CLPHP) are tested and analyzed at different filling ratios, vacuum degrees, and inclination angles, whose working medium is binary methanol-deionized water with a mass ratio of 5:1. The experiment results show that the higher the vacuum degree is, the better the startup and heat transfer performance of CLPHP become; the thermal resistance is less sensitive to inclination angle except for horizontal placement; the 40% volume-filling ratio can effectively avoid dry-out at high temperature. When 80 °C is the ideal working temperature of PEMFC, the thermal resistance of CLPHP is 0.093°C/W; the heat transfer heat flux is 1.59 W/cm2, and the temperature fluctuation is small. Therefore, flat-plate CLPHP has great application potential for PEMFC cooling.

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Research on the in-plane temperature distribution in a PEMFC stack integrated with flat-plate heat pipe under different startup strategies and inclination angles

Cited by 37 publications

References 17 publications

A Review of MHP Technology and Its Research Status in Cooling of Li-Ion Power Battery and PEMFC

A Review of MHP Technology and Its Research Status in Cooling of Li-Ion Power Battery and PEMFC

Performance Enhancement of PEM Fuel Cells with an Additional Outlet in the Parallel Flow Field

Experimental Investigation on the Operating Characteristics of Flat-Plate CLPHP for PEMFC Cooling

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