# how to calculate the average current density of fuel cell

 Register Blogs Members List Search Today's Posts Mark Forums Read

April 28, 2017, 02:05
how to calculate the average current density of fuel cell
#1
Member

Join Date: Apr 2010
Posts: 69
Rep Power: 9
Dear All

I want to calculate the average current density from the given data.To calculate the inlet mass flow rate ( anode and cathode) kg/s for PEM fuel cell.

Thank you

Regards
Attached Images
 Experimental data.JPG (32.0 KB, 10 views)

 April 29, 2017, 14:49 #2 New Member     Patcharawat Join Date: Jan 2014 Posts: 12 Rep Power: 5 You can use the Faraday law of electrolysis to convert the current density into mass flow rate directly. Sent from my iPhone using CFD Online Forum mobile app ramakant likes this.

May 1, 2017, 02:49
#3
Member

Join Date: Apr 2010
Posts: 69
Rep Power: 9
Quote:
 Originally Posted by P.Charoen-amornkitt You can use the Faraday law of electrolysis to convert the current density into mass flow rate directly. Sent from my iPhone using CFD Online Forum mobile app
Thank you ,Can you give me example to to current density to mass flow rate.

 May 4, 2017, 05:39 #4 New Member     Patcharawat Join Date: Jan 2014 Posts: 12 Rep Power: 5 https://en.m.wikipedia.org/wiki/Fara...f_electrolysis You can find how much mass is consumed using this relation. The amount of mass consumed depends on the current density. You can see from the data that the current density cannot reach 1.3-1.4 A/cm^2. So, maybe you can just pick that current density and substitute it into the equation. However, this method is not a good way to calculate for the mass flow rate since the high current density region was also affected by water that prevents the mass to reach the reaction site. In this case, the volume flow rate or the mass flow rate for the experiment should have been given in the paper. You should start from there. Sent from my iPhone using CFD Online Forum mobile app ramakant likes this.

May 4, 2017, 07:06
#5
Member

Join Date: Apr 2010
Posts: 69
Rep Power: 9
Quote:
 Originally Posted by P.Charoen-amornkitt https://en.m.wikipedia.org/wiki/Fara...f_electrolysis You can find how much mass is consumed using this relation. The amount of mass consumed depends on the current density. You can see from the data that the current density cannot reach 1.3-1.4 A/cm^2. So, maybe you can just pick that current density and substitute it into the equation. However, this method is not a good way to calculate for the mass flow rate since the high current density region was also affected by water that prevents the mass to reach the reaction site. In this case, the volume flow rate or the mass flow rate for the experiment should have been given in the paper. You should start from there. Sent from my iPhone using CFD Online Forum mobile app
Dear Amornkitt
You are saying that I should take the current density (A/cm2) more than 1A(ie.1.35 A/cm2).

Thank you

 Thread Tools Display Modes Linear Mode

 Posting Rules You may not post new threads You may not post replies You may not post attachments You may not edit your posts BB code is On Smilies are On [IMG] code is On HTML code is OffTrackbacks are On Pingbacks are On Refbacks are On Forum Rules

 Similar Threads Thread Thread Starter Forum Replies Last Post Xuekun CD-adapco 2 January 27, 2016 20:01 qwe2077 FLUENT 5 February 12, 2015 04:25 Nehal FLUENT 2 August 7, 2012 07:47 sajjad haider FLUENT 2 February 22, 2012 19:16 kumar FLUENT 0 November 18, 2005 17:55

All times are GMT -4. The time now is 14:56.