Fuel cell voltage end efficiency

  • Thread starter Thermo
  • Start date
50
6
I know theoretically fuel cell efficiency decreases as temperature increases. But in practice it is vice versa. What is the reason of that? I couldn't find enough sources. Any kind of help is much appreciated.
 

Bystander

Science Advisor
Homework Helper
Gold Member
5,036
1,033
50
6
Even though a fuel cell is more efficient at lower temperatures as shown in Table 3.1, the voltage losses are much less in higher temperature fuel cells. Therefore, it is more advantageous to run a fuel cell at a higher temperature yet lower efficiency to produce higher operating voltages.

upload_2016-11-11_0-33-33.png

Source: Chris Rayment Scott Sherwin Department of Aerospace and Mechanical Engineering University of Notre Dame Notre Dame, IN 46556, U.S.A. May 2, 2003
Enough?...
 
50
6
I think I just found the answer...
 

Want to reply to this thread?

"Fuel cell voltage end efficiency" You must log in or register to reply here.

Related Threads for: Fuel cell voltage end efficiency

Replies
4
Views
1K
  • Posted
Replies
2
Views
3K
  • Posted
Replies
2
Views
4K
Replies
63
Views
54K
Replies
2
Views
2K

Physics Forums Values

We Value Quality
• Topics based on mainstream science
• Proper English grammar and spelling
We Value Civility
• Positive and compassionate attitudes
• Patience while debating
We Value Productivity
• Disciplined to remain on-topic
• Recognition of own weaknesses
• Solo and co-op problem solving
Top