Even though heat transfer co-efficient in boiling liquids is large, use of fins is advantageous, when the entire surface is exposed to ________________ boiling ?
Correct answer: C. Film
- A. Transition
- B. Nucleate
- C. Film
- D. All modes of
Explanation
Fins are advantageous in film boiling because the vapour film creates high thermal resistance and gives a relatively low heat-transfer coefficient. Increasing the surface area with fins therefore increases the heat-transfer rate.
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