Experimental analysis of a dimensionless number in the cathode channels of a polymer electrolyte membrane fuel cell with different head losses

2009 ◽  
Vol 224 (1) ◽  
pp. 95-108 ◽  
Author(s):  
S H Han ◽  
K R Kim ◽  
D K Ahn ◽  
Y D Choi
Keyword(s):  
Fuel Cell ◽  
Proton Exchange Membrane ◽  
Polymer Electrolyte Membrane ◽  
Proton Exchange ◽  
Dimensionless Number ◽  
Cell Temperature ◽  
Electrolyte Membrane ◽  
Head Losses ◽  
Temperature And Pressure ◽  
Exchange Membrane

This study investigates the effects of stoichiometry, humidity, cell temperature, and pressure on the performance and the flooding of the proton exchange membrane fuel cell. Values of stoichiometry are 1.5, 2.0, and 2.5 at cell temperatures of 50, 55, and 60 °C, respectively. This study shows that the dimensionless flooding value (FV) is a function of the stoichiometry, humidity, temperature, and pressure. The FV is calculated by using the measured values of temperature, humidity, pressure, and flowrate of the cathode. The effect of the dimensionless number on the flooding of the cathode in the proton exchange membrane fuel cell is analysed in this study. The effects of air stoichiometry, cell temperature, and air humidity are also discussed in this article.

scholarly journals Simulation of Fuel Cell Technology Using Matlab

2018 ◽  
Vol 7 (3.27) ◽  
pp. 80
Author(s):  
G Sheebha Jyothi ◽  
Y Bhaskar Rao
Keyword(s):  
Mathematical Model ◽  
Fuel Cell ◽  
Energy Supply ◽  
Proton Exchange Membrane ◽  
Polymer Electrolyte Membrane ◽  
Electrical Energy ◽  
Fast Response ◽  
Proton Exchange ◽  
Electrolyte Membrane ◽  
Exchange Membrane

This paper represents a mathematical model for proton exchange membrane fuel cell(PEMFC)system. Proton exchange membrane fuel cell (also called polymer Electrolyte Membrane fuel cells(PEM)) provides a continuous electrical energy supply from fuel at high levels of efficiency and power density. PEMs provide a solid, corrosion free electrolyte, a low running temperature, and fast response to power.  

scholarly journals A noble metal-free proton-exchange membrane fuel cell based on bio-inspired molecular catalysts

2015 ◽  
Vol 6 (3) ◽  
pp. 2050-2053 ◽  
Author(s):  
P. D. Tran ◽  
A. Morozan ◽  
S. Archambault ◽  
J. Heidkamp ◽  
P. Chenevier ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Noble Metal ◽  
Proton Exchange Membrane ◽  
Polymer Electrolyte Membrane ◽  
Proton Exchange ◽  
Hydrogen Fuel Cell ◽  
Metal Free ◽  
Electrolyte Membrane ◽  
Molecular Catalysts ◽  
Exchange Membrane

Bio-inspired chemistry allowed for the development of the first noble metal-free polymer electrolyte membrane hydrogen fuel cell (PEMFC). The device proved operational under technologically relevant conditions.

Endoreversible modeling of a PEM fuel cell

2015 ◽  
Vol 40 (4) ◽  
Author(s):  
Katharina Wagner ◽  
Karl Heinz Hoffmann
Keyword(s):  
Fuel Cell ◽  
Power Output ◽  
Proton Exchange Membrane ◽  
Polymer Electrolyte Membrane ◽  
Electrical Energy ◽  
Proton Exchange ◽  
Functional Dependencies ◽  
Electrolyte Membrane ◽  
Exchange Membrane ◽  
Cell Data

AbstractFuel cells are known for high efficiencies in converting chemical energy into electrical energy. Nonetheless, the processes taking place in a fuel cell still possess a number of irreversibilities that limit the power output to values below the reversible limit. To analyze these, we developed a model that captures the main irreversibilities occurring inside a proton exchange membrane or polymer electrolyte membrane fuel cell. We used the methods of endoreversible thermodynamics, which enable us to study the entropy production of the different sources of irreversibility in detail. Additionally, performance measures like efficiency and power output can be calculated with such a model, and the influence of different parameters, such as temperature and pressure, can be easily investigated. The comparison of the model predictions with realistic fuel cell data shows that the functional dependencies of the fuel cell characteristics can be captured quite well.

Experimental Study on Estimation Method of Flooding Phenomenon at the Cathode Channel in the Proton Exchange Membrane Fuel Cell

2013 ◽  
Vol 11 (2) ◽  
Author(s):  
Seong-Ho Han ◽  
Deuk Kuen-Ahn ◽  
Young-Don Choi
Keyword(s):  
Fuel Cell ◽  
Relative Humidity ◽  
Proton Exchange Membrane ◽  
Estimation Method ◽  
Proton Exchange ◽  
Dimensionless Number ◽  
Outlet Temperature ◽  
Cell Temperature ◽  
Exchange Membrane ◽  
Different Levels

The paper investigates the effects of the dimensionless number flooding number that can exactly predict the flooding phenomenon in the cathode channel. Experiments were carried out at 0, 50, and 90% relative humidity and at 50 and 60 °C cell temperature respectively. The experiment gave a dimensionless number that could effectively predict the flooding effect in the cathode channel of the PEM fuel cell. As the study was performed the factors such as temperature and relative humidity that influenced the dimensionless number, the results verified the dimensionless number. These results have been connected to the cathode channel flooding. The influences of outlet temperature and relative humidity on flooding at different levels of current density are discussed.

Design Models of Polymer Electrolyte Membrane Fuel Cell System

2010 ◽  
Vol 447-448 ◽  
pp. 554-558
Author(s):  
Mulyazmi ◽  
Wan Ramli Wan Daud ◽  
Edy Herianto Majlan
Keyword(s):  
Fuel Cell ◽  
Proton Exchange Membrane ◽  
Computational Models ◽  
Polymer Electrolyte Membrane ◽  
Cell System ◽  
Proton Exchange ◽  
Water Management System ◽  
Electrolyte Membrane ◽  
Exchange Membrane ◽  
System Water

One important aspect to develop fuel cell design is to use the concept of computational models. Mathematical modeling can be used to help research complex, estimates the optimal performance of fuel cells stack, compare several different processes, save costs and time in the investigation. This paper focuses on several reviews of research models to develop the system design of the Proton Exchange Membrane Fuel Cell (PEMFC). Purposes of this study are to determine the factors that affect system performance include: stack of PEMFC system, water management system and Supply of reactants to the PEMFC stack.

Platinum-Catalyzed Polymer Electrolyte Membrane for Fuel Cells

1999 ◽  
Vol 575 ◽  
Author(s):  
T. Jan Hwang ◽  
Hong Shao ◽  
Neville Richards ◽  
Jerome Schmitt ◽  
Andrew Hunt ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Proton Exchange Membrane ◽  
Low Cost ◽  
Polymer Electrolyte Membrane ◽  
Chemical Vapor ◽  
Proton Exchange ◽  
Fabrication Process ◽  
Membrane Electrode ◽  
Fuel Cell Performance ◽  
Electrolyte Membrane

ABSTRACTThe objective of this research is to develop the combustion chemical vapor deposition (CCVD) process for low-cost manufacture of catalytic coatings for proton exchange membrane fuel cell (PEMFC) applications. The platinum coatings as well as the fabrication process for membrane-electrode-assemblies (MEAs) were evaluated in a single testing fuel cell using hydrogen/oxygen. It was found that increasing the platinum loading from 0.05 to 0.1 mg/cm2 did not increase the fuel cell performance. The in-house MEA fabrication process needs to be improved to reduce the cell resistance. Significantly higher performance of Pt coating by the CCVD process has been obtained by MCT's fuelcell industry collaborators who are more experienced with MEA fabrication. The results can not be revealed due to confidentiality agreements.

Water Management in Fuel Cell Stack by Using Microcontroller

2014 ◽  
Author(s):  
Gukan Rajaram ◽  
Manoj Kumar Panthalingal ◽  
Parthasarathy Valivittan
Keyword(s):  
Fuel Cell ◽  
Proton Exchange Membrane ◽  
Proton Exchange ◽  
Cell Temperature ◽  
Fuel Cell Stack ◽  
Water Accumulation ◽  
And Performance ◽  
Exchange Membrane ◽  
Automatic Switching ◽  
Number Of Cells

Proton Exchange Membrane Fuel Cell (PEMFC) is very good at producing energy without the emission of any harmful gases. In this work, emphasis has been given towards controlling the water accumulation inside the cell stack. The effective cooling of the fuel cell during operation can significantly improve the efficiency. Also, flooding and dehydration conditions are most common reasons for the efficiency reduction and performance degradation of the fuel cells. In the current work, the problem is addressed by controlling the number of cells in operation through a specifically designed microcontroller. The controller would switch the cells on/off when the need arises which can be diagnosed by thermocouple by virtue of cell temperature. Automatic switching with the microcontroller is performed without disturbing the stack operation. This could improve the cell performance with reduced flooding/dehydration of the stack. So the same stack life may be improved substantially.

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