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Efficiency of Fins: which one is more efficient?

 
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Apr28-12, 04:06 PM   #1
 

Efficiency of Fins: which one is more efficient?

Option 1: a circular cross-section pin fin with a radius of 1 mm

Option 2: a circular cross-section pin fin with a radius of 2 mm

Which is more efficient? Why?

Both fins have the same length, experience the same convective heat transfer coefficient, and have an insulated tip.
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efficiency, fins, heat transfer, thermodynamics
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