1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Thermoelectric Question

  1. Apr 24, 2009 #1
    Just a quick question:

    It is the seebeck effect whereby a directly proportional voltage to the temperature dif is produced. I am wondering whether adding more junctions in that style would produce more electricity.

    Would this....
    http://img156.imageshack.us/img156/3140/54089643.jpg [Broken]
    produce 3 (three) times more electricity than this...
    http://img519.imageshack.us/img519/148/30093508.jpg [Broken]

    Thank you.
    Last edited by a moderator: May 4, 2017
  2. jcsd
  3. Apr 24, 2009 #2


    User Avatar

    Staff: Mentor

    I'm not seeing the attachments...
  4. Apr 25, 2009 #3
    how is that? are they viewable now?
  5. Apr 25, 2009 #4
    Adding junctions will only increase the electricity produced if the overall contact resistance goes down. That will increase the amperage but not the voltage. Contact resistance is a significant consideration when designing and producing thermoelectric modules and is typically very, very low so there isn't much to be gained over present art.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook