Real-time,In situMeasurement of Fuel and Crossover Methanol Vapor Concentration of a Vapor-Fed Passive Direct Methanol Fuel Cell Using Laser Absorption Spectroscopy

2010 ◽  
Vol 49 (2) ◽  
pp. 022401
Author(s):  
Jinhwa Chung ◽  
Sungmoo Heo ◽  
Soonho Song ◽  
Jinho Kim ◽  
Sangkyun Kang ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Real Time ◽  
Absorption Spectroscopy ◽  
Direct Methanol Fuel Cell ◽  
Vapor Concentration ◽  
Laser Absorption Spectroscopy ◽  
Methanol Vapor ◽  
Laser Absorption ◽  
Direct Methanol ◽  
Methanol Fuel Cell

Study on a Vapor-Feed Air-Breathing Direct Methanol Fuel Cell Assisted by a Catalytic Combustor

2015 ◽  
Vol 12 (1) ◽  
Author(s):  
Wei Yuan ◽  
Hong-Rong Xia ◽  
Jin-Yi Hu ◽  
Zhao-Chun Zhang ◽  
Yong Tang
Keyword(s):  
Fuel Cell ◽  
Direct Methanol Fuel Cell ◽  
Cell Performance ◽  
Catalyst Loading ◽  
High Concentration ◽  
Methanol Vapor ◽  
Air Breathing ◽  
Direct Methanol ◽  
Catalytic Combustor ◽  
Methanol Fuel Cell

Feeding vaporized methanol to the direct methanol fuel cell (DMFC) helps reduce the effects of methanol crossover (MCO) and facilitates the use of high-concentration or neat methanol so as to enhance the energy density of the fuel cell system. This paper reports a novel system design coupling a catalytic combustor with a vapor-feed air-breathing DMFC. The combustor functions as an assistant heat provider to help transform the liquid methanol into vapor phase. The feasibility of this method is experimentally validated. Compared with the traditional electric heating mode, the operation based on this catalytic combustor results in a higher cell performance. Results indicate that the values of methanol concentration and methanol vapor chamber (MVC) temperature both have direct effects on the cell performance, which should be well optimized. As for the operation of the catalytic combustor, it is necessary to optimize the number of capillary wicks and also catalyst loading. In order to fast trigger the combustion reaction, an optimal oxygen feed rate (OFR) must be used. The required amount of oxygen to sustain the reaction can be far lower than that for methanol ignition in the starting stage.

scholarly journals Experimental Studies on a New Controller Design and Implementation in Direct Methanol Fuel Cell

Processes ◽  
2020 ◽  
Vol 8 (7) ◽  
pp. 796
Author(s):  
Ramasamy Govindarasu ◽  
Solaiappan Somasundaram
Keyword(s):  
Fuel Cell ◽  
Real Time ◽  
Direct Methanol Fuel Cell ◽  
Controller Design ◽  
Experimental Studies ◽  
Set Point ◽  
Point Tracking ◽  
Time Operation ◽  
Direct Methanol ◽  
Methanol Fuel Cell

A dynamic model of a Direct Methanol Fuel Cell is developed in the MATLAB platform. A newly proposed Coefficient Diagram based Proportional Integral Controller (CD-PIC) is designed and its parameters are calculated. The newly designed CD-PIC is implemented in a real time Direct Methanol Fuel Cell (DMFC) experimental setup. Performances in real time operation of the Direct Methanol Fuel Cell (DMFC) are evaluated. The performance of CD-PIC is obtained under tracking of set point changes. In order to evaluate the CD-PIC performances, most popular tuning rules based Conventional PI Controllers (C-PIC) are also designed and analyzed. Set point tracking is carried out for the step changes of ±10% and ±15% at two different operational points. The controller performances are analyzed in terms of Controller Performance Measuring (CPM) indices. The said performance measures indicate that the proposed CD-PIC gives the superior performances for set point changes and found very much robust in controlling DMFC.

Space Resolved, in Operando X-ray Absorption Spectroscopy: Investigations on Both the Anode and Cathode in a Direct Methanol Fuel Cell

2012 ◽  
Vol 116 (13) ◽  
pp. 7587-7595 ◽  
Author(s):  
Ditty Dixon ◽  
Anja Habereder ◽  
Maryam Farmand ◽  
Sebastian Kaserer ◽  
Christina Roth ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Absorption Spectroscopy ◽  
Direct Methanol Fuel Cell ◽  
X Ray ◽  
Direct Methanol ◽  
In Operando ◽  
X Ray Absorption ◽  
Methanol Fuel Cell
Sign in / Sign up

Export Citation Format

Share Document