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  3. 2 what is the purpose of using extended surface or...

Question: 2 what is the purpose of using extended surface or...

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2. What is the purpose of using extended surface or fin? Give two real life examples of the use of extended surfaces.

3. The heat flux q is 6000 W/m2 at the surface of an electric heater. The heater temperature is 120ºC when it is cooled by air at 70ºC. What is the average convective heat transfer coefficient h ? What will be the heater temperature be if the power is reduced so

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