Air at Ts passes over a large flat surface that has a dimension of length (L)...

Air at Ts passes over a large flat surface that has a dimension of length (L) of 70 cm and a width (W) of 10 cm. The air velocity over it is V and the surface temperature is maintained at Ts =250 oC.
a) For these conditions, what is the heat transfer rate of the large flat surface?

To increase the heat removal rate, a stainless steel (AISI 304) uniform cross sectional rectangular pin fin of a base dimensions of 30 X 30 mm is fixed to the surface which is assumed to remain at Ts =250 oC. The length of the rectangular tip is 100 mm. The tip of the fin is insulated. Assume the convective heat transfer coefficient is the same before and after the addition of the fin.

b) Calculate the temperature at the end of the tip? b) Determine the heat removal rate through the fin. d) Determine the fin effectiveness.

Expert Solution

Amanda K answered 7 months ago

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