Boiling and Condensation Heat Transfer
Boiling and condensation heat transfer are critical processes in various engineering applications, influencing the efficiency of thermal systems. Boiling involves phase change heat transfer from liquid to vapor, while condensation relates to vapor transitioning back to liquid. Understanding the mechanisms and applications of these processes is essential for optimizing equipment like boilers, condensers, and heat exchangers.
Sections
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What we have learnt
- Boiling is characterized by heat transfer at a solid-liquid interface, involving latent heat.
- Flow boiling is more complex than pool boiling due to forced convection.
- Condensation occurs when vapor contacts a cooler surface, releasing latent heat.
Key Concepts
- -- Boiling Heat Transfer
- The transfer of heat during the phase change from liquid to vapor, typically at a solid interface.
- -- Nucleate Boiling
- A boiling regime where bubbles form and detach from a heated surface.
- -- Film Condensation
- Condensation where a continuous film of liquid forms on the surface, limiting heat transfer.
- -- Dropwise Condensation
- A type of condensation where vapor forms discrete droplets on a non-wettable surface, allowing for higher heat transfer rates.
- -- Critical Heat Flux (CHF)
- The point in boiling where the heat transfer efficiency drops drastically.
Additional Learning Materials
Supplementary resources to enhance your learning experience.