What is the phenomenon called when a liquid undergoes phase change to vapor without bubble formation in a clean container?

Nucleate boiling

Fill in the blank: The pressure of vaporization inside a bubble must exceed that in the surrounding liquid due to ______ acting on the liquid-vapor interface.

Surface tension

True or False: In nucleate boiling, bubbles form rapidly on the surface of the heating wire at low excess temperature.

False. Bubbles begin to form on the surface of the wire as the excess temperature increases.

Riddle: I rise from a heated surface, detach, and float away, increasing heat transfer but requiring a threshold temperature. What am I?

Bubble in nucleate boiling

What type of condensation occurs when the liquid does not wet the surface, resulting in random drops?

Dropwise condensation

Fill in the blank: The boiling crisis occurs when the heat transfer is facilitated by ______ through the vapor film.

Radiation

True or False: Film condensation offers lower heat transfer resistance compared to dropwise condensation.

False. Film condensation offers significant heat transfer resistance compared to dropwise condensation.

What is the relationship between the film Reynolds number and the flow condition of the condensate film?

If Ref ≤ 30, the film remains laminar; if 30 < ref="" />< 1600,="" it="" remains="" laminar="" but="" with="" waves;="" if="" ref="" ≥="" 1600,="" the="" film="" becomes="" />

Riddle: I am a transition where nucleate boiling turns to film boiling, increasing thermal resistance. What am I?

Transition boiling

What does the Jacob number account for in the context of heat transfer during condensation?

It accounts for the ratio of sensible heat to latent heat in the heat transfer process.