Applications of heuristic dynamic programming in the proton exchange membrane fuel cell temperature control

2012 ◽  
Author(s):  
Xiaofeng Lin ◽  
Jile Huang
Keyword(s):  
Dynamic Programming ◽  
Fuel Cell ◽  
Temperature Control ◽  
Proton Exchange Membrane ◽  
Proton Exchange ◽  
Cell Temperature ◽  
Heuristic Dynamic Programming ◽  
Exchange Membrane

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.

An Experimental Study of Operational Parameters on the Performance of PEMFCs

2010 ◽  
Author(s):  
Emad G. Barakat ◽  
Ali K. Abdel-Rahman ◽  
Mahmoud A. Ahmed ◽  
Ahmed Hamza H. Ali
Keyword(s):  
Fuel Cell ◽  
Proton Exchange Membrane ◽  
Proton Exchange ◽  
Operating Pressure ◽  
Operational Parameters ◽  
Cell Temperature ◽  
Power Increase ◽  
Set Up ◽  
Exchange Membrane ◽  
Gas Humidification

The performance of Proton exchange membrane fuel cell (PEMFC) has been experimentally investigated. An experimental set-up was designed to study the effects of operating parameters such as cell temperature, gas humidification, and cell operating pressure on the performance of fuel cell. The results indicated that the output power increase with the increase of humidification ratio. Furthermore, an increase of cell pressure results in a significant increase of cell power. The results indicated that increasing of the temperature leads to a decrease of cell power. The results are explained and discussed in more details for different operational parameters.

Experimental Investigation of Irreversibility of a Proton Exchange Membrane Fuel Cell

2012 ◽  
Vol 134 (2) ◽  
Author(s):  
I. Khazaee
Keyword(s):  
Fuel Cell ◽  
Proton Exchange Membrane ◽  
Exergy Analysis ◽  
Pem Fuel Cell ◽  
Membrane Electrode Assembly ◽  
Proton Exchange ◽  
Membrane Electrode ◽  
Cell Temperature ◽  
Internal Parameters ◽  
Exchange Membrane

For an 11 W proton exchange membrane (PEM) fuel cell, the exergy analysis at different channel geometry and internal parameters such as temperature, pressure, and mass flow rate are investigated experimentally. The geometry of the cell is rectangular, elliptical, and triangular. A PEM fuel cell with 25cm2 active area and Nafion 117 membrane with 4 mg Pt cm-2 for the anode and cathode is employed as a membrane electrode assembly. The results show that when the geometry of the cell is rectangular, the irreversibility of the cell is at lower value and the exergy efficiency is at higher value. Also, the results show that with the increase of hydrogen, oxygen, and cell temperature, the exergy efficiencies of the cell increase and irreversibilities decrease.

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.

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