The heat transfer co-efficient in film type condensation is _______________ that for dropwise condensation?
Correct answer: B. Lower than
- A. Greater than
- B. Lower than
- C. Is same as
- D. Half
Explanation
Dropwise condensation exposes much more of the cold surface directly to fresh condensate-free regions, giving a higher heat-transfer coefficient. A continuous condensate film adds thermal resistance, so filmwise condensation has the lower coefficient.
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