Q.1
Out of the following identify valid geometry for fins
(|) Longitudinal fins of rectangular cross section attached to a wall
(Il) Cylindrical tubes with radial fins
(II!) Conical rod protruding from a wall
Choose the correct answer from the options given below:
- Extended Surface (Fin) Geometries in Heat Exchangers:
- Fins expand convective heat transfer surface area ($q = h A \Delta T$):
- (I) Longitudinal fins: Rectangular profiles attached along planar furnace or heat exchanger walls.
- (II) Radial (annular) fins: Concentric circular discs around cylindrical evaporator/condenser pipes.
- (III) Conical pin fins (spines): Protruding tapered rods maximizing heat dissipation with minimum fin weight.
- All three are standard, mathematically valid fin geometries.
- Conclusion: (I), (II) and (III) (Option 1).
Correct option: (1) 0), () and (I!)
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