Ignition Bifurcations in a Stirred Tank PEM Fuel Cell

2005 ◽  
Author(s):  
Keith Promislow ◽  
Igor Nazarov
Keyword(s):  
Fuel Cell ◽  
Polymer Electrolyte Membrane ◽  
Transient Behavior ◽  
Pem Fuel Cell ◽  
Membrane Resistance ◽  
Stirred Tank ◽  
Electrolyte Membrane ◽  
Ignition Dynamics ◽  
Current Production ◽  
Current Water

A mathematical model of ignition dynamics and bistable operation of a Stirred Tank Reactor (STR) Polymer Electrolyte Membrane (PEM) fuel cell is developed. In dry inlet gas operation the positive feedback between current, water production, and membrane resistance within the model leads to two stable “ignited” states. Within the framework of the model these correspond to a uniform current distribution or a partially extinguished cell with localized current production. The switching between the two regimes is accompanied by hysteresis and transient behavior on the order of 2–4 hours in a small 1 cm2 cell. We compare the numerical results to experimental data gathered by Jay Benziger and show that the steady-state distribution of membrane water is very sensitive to several parameters and is an excellent diagnostic for determining material parameters.

scholarly journals Modeling and Analysis of Solar Photovoltaic Assisted Electrolyzer-Polymer Electrolyte Membrane Fuel Cell For Running a Hospital in Remote Area in Kolkata, India

2017 ◽  
Vol 6 (2) ◽  
pp. 181 ◽  
Author(s):  
Kamaljyoti Talukdar
Keyword(s):  
Fuel Cell ◽  
Polymer Electrolyte ◽  
Polymer Electrolyte Membrane ◽  
Pem Fuel Cell ◽  
Solar Photovoltaic ◽  
Modeling And Analysis ◽  
Photovoltaic Modules ◽  
Electrolyte Membrane ◽  
Sunshine Hours ◽  
In Series

The present work consists of the modeling and analysis of solar photovoltaic panels integrated with electrolyzer bank and Polymer Electrolyte Membrane (PEM) fuel cell stacks for running different appliances of a hospital located in Kolkata for different climatic conditions. Electric power is generated by an array of solar photovoltaic modules. Excess energy after meeting the requirements of the hospital during peak sunshine hours is supplied to an electrolyzer bank to generate hydrogen gas, which is consumed by the PEM fuel cell stack to support the power requirement during the energy deficit hours. The study reveals that 875 solar photovoltaic modules in parallel each having 2 modules in series of Central Electronics Limited Make PM 150 with a 178.537 kW electrolyzer and 27 PEM fuel cell stacks, each of 382.372 W, can support the energy requirement of a 200 lights (100 W each), 4 pumps (2 kW each), 120 fans(65 W each) and 5 refrigerators (2 kW each)system operated for 16 hours, 2 hours,15 hours and 24 hours respectively. 123 solar photovoltaic modules in parallel each having 2 modules in series of Central Electronics Limited Make PM 150 is needed to run the gas compressor for storing hydrogen in the cylinder during sunshine hours.  Keywords: Central Electronics Limited, Electrolyzer, PEM, PM 150, Solar photovoltaic. Article History: Received Feb 5th 2017; Received in revised form June 2nd 2017; Accepted June 28th 2017; Available onlineHow to Cite This Article: Talukdar, K. (2017). Modeling and Analysis of Solar Photovoltaic Assisted Electrolyzer-Polymer Electrolyte Membrane Fuel Cell For Running a Hospital in Remote Area in Kolkata,India. International Journal of Renewable Energy Develeopment, 6(2), 181-191.https://dx.doi.org/10.14710/ijred.6.2.181-191

Role of Defects on Mechanical Response of Nafion® Membranes for Fuel Cell Applications

2004 ◽  
Author(s):  
Ahsan Mian ◽  
Golam Newaz ◽  
Lakshmi Vendra ◽  
Xin Wu ◽  
Sheng Liu
Keyword(s):  
Fuel Cell ◽  
Mechanical Response ◽  
Polymer Electrolyte Membrane ◽  
Pem Fuel Cell ◽  
Tensile Behavior ◽  
Membrane Material ◽  
Initial Attempt ◽  
Electrolyte Membrane ◽  
Wave Imaging

Nafion® manufactured by Dupont is a widely used membrane material for polymer electrolyte membrane (PEM) fuel cell. Such membranes are made thin and also have to be hydrated during operation to increase proton conductivity of the cell. Since the membranes are made thin, and do not posses high mechanical properties, they are prone to any handling induced damage. In this paper, we have made an initial attempt to demonstrate the capability of thermal wave imaging nondestructive evaluation (NDE) technique in detecting various types of damage entities such as scratches, folding, and pin pricks in the membrane material. In addition, the effect of hydration and handling induced damage on the tensile behavior of Nafion® membrane is studied. It is observed that the damaged and as-received hydrated samples exhibit lower modulus and yield strength than the corresponding dry counterparts.

scholarly journals The stirred tank reactor polymer electrolyte membrane fuel cell

AIChE Journal ◽  
2004 ◽  
Vol 50 (8) ◽  
pp. 1889-1900 ◽  
Author(s):  
Jay Benziger ◽  
E. Chia ◽  
E. Karnas ◽  
J. Moxley ◽  
C. Teuscher ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Polymer Electrolyte ◽  
Polymer Electrolyte Membrane ◽  
Stirred Tank ◽  
Stirred Tank Reactor ◽  
Tank Reactor ◽  
Electrolyte Membrane

A Modeling Study of PEM Fuel Cell with Novel Catalyst Monolayers under Low Platinum Loading

2022 ◽  
Author(s):  
Jingtian Wu ◽  
Huiyuan Liu ◽  
Yujiang Song ◽  
Yun Wang
Keyword(s):  
Fuel Cell ◽  
Polymer Electrolyte ◽  
Polymer Electrolyte Membrane ◽  
Pem Fuel Cell ◽  
Pem Fuel Cells ◽  
Major Barrier ◽  
Electrolyte Membrane ◽  
Catalyst Layers ◽  
Novel Catalyst ◽  
Platinum Loading

Cost is a major barrier to commercialization of polymer electrolyte membrane (PEM) fuel cells. Catalyst layers (CLs) contribute to a major portion of PEM fuel cell cost due to the...

Steady-State Analysis and Energetic Comparison of Air Compressors for PEM Fuel Cell Systems

2006 ◽  
Author(s):  
Ivan Arsie ◽  
Alfonso Di Domenico ◽  
Luca Pappalardo ◽  
Cesare Pianese ◽  
Marco Sorrentino
Keyword(s):  
Fuel Cell ◽  
Centrifugal Compressor ◽  
Polymer Electrolyte Membrane ◽  
Thermodynamic Description ◽  
Pem Fuel Cell ◽  
Cell System ◽  
The Other ◽  
Electrolyte Membrane ◽  
Balance System ◽  
Air Compressors

The aim of the work is to perform a comparative study of the compression system for a polymer electrolyte membrane (PEM) fuel cell. This study wishes also to address some key-features on the suitability of different compressors with respect to the main system design issues (e.g. energy balance, system performance and control). According to the technologies currently considered as being able to meet fuel cell system requirements, sliding vane, twin-screw and centrifugal compressors have been studied. The analysis has been performed making use of a modeling approach based on both thermodynamic description of the plant and synthesis of experimental efficiency data. Altogether, the results indicate that the centrifugal compressor should be preferred due to its higher efficiency as compared to the other compressors analyzed. Nevertheless, specific applications (e.g automotive field) may redirect the selection of the optimal compression device towards the other typologies, because of the highly fluctuating power demands and the issues associated with the narrow centrifugal compressor operation range.

scholarly journals Data from Experimental Analysis of the Performance and Load Cycling of a Polymer Electrolyte Membrane Fuel Cell

Data ◽  
2020 ◽  
Vol 5 (2) ◽  
pp. 47 ◽  
Author(s):  
Andrea Ramírez-Cruzado ◽  
Blanca Ramírez-Peña ◽  
Rosario Vélez-García ◽  
Alfredo Iranzo ◽  
José Guerra
Keyword(s):  
Experimental Data ◽  
Fuel Cells ◽  
Fuel Cell ◽  
Polymer Electrolyte ◽  
Experimental Analysis ◽  
Polymer Electrolyte Membrane ◽  
Pem Fuel Cell ◽  
Research Centre ◽  
Electrolyte Membrane ◽  
Load Cycling

Fuel cells are electrochemical devices that convert the chemical energy stored in fuels (hydrogen for polymer electrolyte membrane (PEM) fuel cells) directly into electricity with high efficiency. Fuel cells are already commercially used in different applications, and significant research efforts are being carried out to further improve their performance and durability and to reduce costs. Experimental testing of fuel cells is a fundamental research activity used to assess all the issues indicated above. The current work presents original data corresponding to the experimental analysis of the performance of a 50 cm2 PEM fuel cell, including experimental results from a load cycling dedicated test. The experimental data were acquired using a dedicated test bench following the harmonized testing protocols defined by the Joint Research Centre (JRC) of the European Commission for automotive applications. With the presented dataset, we aim to provide a transparent collection of experimental data from PEM fuel cell testing that can contribute to enhanced reusability for further research.

Non-humidified fuel cells using a deep eutectic solvent (DES) as the electrolyte within a polymer electrolyte membrane (PEM): the effect of water and counterions

2020 ◽  
Vol 22 (5) ◽  
pp. 2917-2929 ◽  
Author(s):  
Mohammad Bagher Karimi ◽  
Fereidoon Mohammadi ◽  
Khadijeh Hooshyari
Keyword(s):  
Fuel Cells ◽  
Fuel Cell ◽  
Polymer Electrolyte ◽  
Polymer Electrolyte Membrane ◽  
Deep Eutectic Solvent ◽  
Deep Eutectic Solvents ◽  
Pem Fuel Cell ◽  
Electrolyte Membrane ◽  
Fuel Cell Application ◽  
Nafion Membranes

In this research, deep eutectic solvents (DESs) were prepared and employed as electrolyte in Nafion membranes for PEM fuel cell application.

Sign in / Sign up

Export Citation Format

Share Document