Extended Surfaces

What are the types of extended surfaces?

• fins and pins

• tubes and pipes

• wings and tails

• leaves and branches

How does heat transfer occur in extended surfaces?

• Heat transfer in extended surfaces occurs through sound waves

• Heat transfer in extended surfaces occurs through evaporation

• Heat transfer in extended surfaces occurs through magnetism

• Heat transfer in extended surfaces occurs through conduction, convection, and radiation.

Can you name any applications of extended surfaces?

• Heat exchangers, electronic cooling systems, car radiators

• Cooking utensils, solar panels, clothing

What is the purpose of using extended surfaces in heat transfer?

• To decrease the surface area for heat transfer

• To increase the surface area for heat transfer

• To minimize the contact area for heat transfer

• To reduce the efficiency of heat transfer

Explain the concept of fin efficiency in extended surfaces.

• Fin efficiency measures the length of the fin

• Fin efficiency is not related to heat transfer

• Fin efficiency is only applicable to short fins

• Fin efficiency is a measure of how effectively an extended surface (or fin) transfers heat.