Question

A pin fin, fabricated from an aluminum alloy (k = 185 W/m K),
has a diameter of D = 3 mm and a length of L = 15 mm. Its base
temperature is T_{b} = 100°C, and it is exposed to a fluid
for which T_{∞} = 20°C and h = 50 W/m^{2} K.

- Provide a sketch and state your assumptions (1 point)
- Use Table 3.5 in the book (
*grading is based on the use of that particular table*) to calculate the fin efficiency, η_{f}(1 point) - Use the efficiency to obtain the heat transfer rate,
q
_{f}(1 point)

Answer #1

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