Question:
Heat transfer coefficient for a vapor condensing as a film on a vertical surface is given by
Heat transfer coefficient for a vapor condensing as a film on a vertical surface is given by
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Condensation → Nusselt theory; convection → Dittus-Boelter, Sieder-Tate.
Updated On: Jan 2, 2026
- Dittus-Boelter equation
- Nusselt theory
- Chilton-Colburn analogy
- Sieder-Tate equation
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The Correct Option is B
Solution and Explanation
Film condensation on vertical surfaces is governed by Nusselt's film condensation theory.
It gives the heat transfer coefficient for laminar condensation by analyzing gravity-driven condensate film thickness and conduction resistance.
Dittus-Boelter, Chilton-Colburn, and Sieder-Tate apply to convection, not condensation.
It gives the heat transfer coefficient for laminar condensation by analyzing gravity-driven condensate film thickness and conduction resistance.
Dittus-Boelter, Chilton-Colburn, and Sieder-Tate apply to convection, not condensation.
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