How to Solve Fin Efficiency Problems (and Fin Effectiveness)

[@faizaanjum6133]

Great video ! You're explanations were very helpful.

[@BrianBernardEngineering]

Thank you. Have a great semester!

[@anshulsuri5619]

Efficiency goes to 1 when length is 0 and goes to zero when length is infinite. So when there is no fin, the efficiency is max, which I don’t understand at all

[@BrianBernardEngineering]

Think of it as "diminishing returns". The first tiny bit of fin added is hugely beneficial. Then the next bit a little less, and next bit even less. a longer fin is always better (more heat transfer) than a shorter fin, but each bit of extra length you add does a little bit less than the piece before it. Eventually you've essentially maxed out, so extra length added does practically nothing extra for heat transfer, so that lowers the efficiency. A long fin, that gets longer, you add very little heat transfer, but a lot of extra length, so this is inefficient.

[@anshulsuri5619]

@@BrianBernardEngineering thanks!! That's a great way to put it!!