Numerical studies on thermal performance of novel cooling plate designs in polymer electrolyte membrane fuel cell stacks

Ravishankar, Sadhana; Prakash, K. Arul

doi:10.1016/j.applthermaleng.2014.01.068

Cited by 44 publications

(13 citation statements)

References 23 publications

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“…The detailed weak formulation and finite element formulation has been presented in Arul Prakash et al [43]. The same algorithm is applied to several industrial applications such as turbomachinary [44], nuclear engineering [43,45], electronic cooling [46] and thermal performance of fuel cells [47]. Recently the same algorithm has been extended to simulate natural convection and entropy generation in porous enclosures by Lam and Prakash [39].…”

Section: Solution Methodology and Code Validationmentioning

confidence: 96%

A numerical investigation of heat transfer and entropy generation during jet impingement cooling of protruding heat sources without and with porous medium

Lam

Prakash

2015

Energy Conversion and Management

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Section: Solution Methodology and Code Validationmentioning

confidence: 96%

A numerical investigation of heat transfer and entropy generation during jet impingement cooling of protruding heat sources without and with porous medium

Lam

Prakash

2015

Energy Conversion and Management

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“…The solution algorithm and finite-element formulation are explained in Prakash, De, Kumar, and Biswas (2006). The same algorithm has also been applied to different applications, such as nuclear engineering , electronic cooling (Lam & Prakash, 2014) and fuel cells (Ravishankar & Prakash, 2014). Standard Galerkin finite-element methods for convection diffusion problems produce an oscillatory solution when convection dominates over diffusion.…”

Section: Mathematical Modelingmentioning

confidence: 97%

“…The present solution algorithm was applied to 180 • bend problems Ravishankar & Prakash, 2015), with good results. The present numerical algorithm was also applied to a fuel cell stack problem (Ravishankar & Prakash, 2014), in which the fluid takes several turns.…”

Section: Code Validationmentioning

confidence: 99%

Numerical studies on fluid flow characteristics through different configurations of spiral casing

Nakkina

Prakash

Kumar

2016

Engineering Applications of Computational Fluid Mechanics

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The design of optimum spiral casing configuration is a difficult task and a big challenge in the field of turbomachinery. Computational fluid dynamics (CFD) analysis of fluid flow characteristics in a 360 • turn around spiral casing plays an important role in its design. The objective in this study is to propose an optimum spiral casing configuration by reducing the total pressure loss and increasing the spiral velocity coefficient and average radial velocity at the exit of spiral casing. For this, three different configurations of spiral casing, viz. accelerated, decelerated and free vortex type, with different aspect ratios (ARs) are numerically simulated. A Eulerian velocity-correction method based on the streamline upwind Petrov-Galerkin (SUPG) finite-element method is employed to solve complete Reynolds-averaged Navier-Stokes (RANS) equations governing fluid flow characteristics. The results show that the average radial velocity along the exit of spiral casings is more for elliptical crosssectional spiral casings of AR > 1 when compared to circular cross-sectional spiral casings. The total pressure loss is found to be at minimum for decelerated spiral casings. In the case of decelerated spiral casings, a further reduction in total pressure loss is obtained with elliptical cross-sections of AR > 1. The spiral velocity coefficient is found to be at maximum for decelerated spiral casings with AR > 1. ARTICLE HISTORY

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“…This is due to a loss of conductivity by polymeric membrane which is related to lower water content in the membrane [6,43]. This example shows that maintaining proper stack operating temperature is critical for obtaining good stack performance.…”

Section: Introductionmentioning

confidence: 99%

“…Brought to you by | MIT Libraries Authenticated Download Date | 5/11/18 6:59 PM uniform temperature distribution in the stack [43]. This allows for effective use of the by-product heat of the fuel cell system leading to substantial increases in overall system efficiency [31].…”

Section: Introductionmentioning

confidence: 99%

Review on management, mechanisms and modelling of thermal processes in PEMFC

Bvumbe¹,

Bujło²,

Tolj³

et al. 2016

Hydrogen and Fuel Cells

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Abstract:In an effort to reduce the environmental impact of the energy sector that is mostly based on fossil fuels, researchers are looking for a clean alternative of our existing energy sources. Hydrogen Energy and Fuel Cells, and in particular Polymer Electrolyte Membrane Fuel Cells (PEMFCs) have emerged as a leading candidate for transportation as well as stationary and portable applications. Due to the irreversibility of the electrochemical reactions and ohmic heating in the fuel cell components, the PEMFC produces a significant amount of heat and this heat has to be removed in order to avoid cell or stack overheating. In this paper, a review of the key heat transfer mechanisms and the various cooling strategies that are available for heat removal from PEMFCs are presented. Due to the interrelated nature and difficulty of conducting in-situ thermal measurements on the operating PEMFCs, computational modelling provides a fast and efficient way of designing PEMFC cooling systems and understanding the heat transfer mechanisms. Therefore PEMFC thermal modelling is also highlighted together with present challenges and potential areas for further research and development works.

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Numerical studies on thermal performance of novel cooling plate designs in polymer electrolyte membrane fuel cell stacks

Cited by 44 publications

References 23 publications

A numerical investigation of heat transfer and entropy generation during jet impingement cooling of protruding heat sources without and with porous medium

A numerical investigation of heat transfer and entropy generation during jet impingement cooling of protruding heat sources without and with porous medium

Numerical studies on fluid flow characteristics through different configurations of spiral casing

Review on management, mechanisms and modelling of thermal processes in PEMFC

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