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Homework Help: Penguin huddling -Heat transfer mechanisms -Radiation problem

  1. Oct 28, 2008 #1
    1. The problem statement, all variables and given/known data

    To withstand the harsh weather of the Antarctic emperor penguins huddle in groups. Assume that a penguin is a circular cylinder with a top surface area of 0.34m2 and a height of 1.1m. If penguins huddled closely to form a huddled culinder with a top surface area of Na and height h by what percentage does huddling reduce the total radiation loss compared to if 1000 seperate identical penguins radiated heat alone.

    3. The attempt at a solution

    I ended up with the solution of 85%. Can anyone verify this? I just want to see if my solution is right. I'm not looking for anyone to post the full solution just verification. Thanks guys
  2. jcsd
  3. Oct 29, 2008 #2
    cmon guys please help
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