by between 10 and 30 C-change. The critical heat flux is the peak on the curve between nucleate boiling and transition boiling. The heat transfer from the surface to the liquid is greater than that in film boiling.

Nucleate boiling is common in electric kettles and is responsible for the noise that occurs before boiling occurs. It also occurs in water boilers where water is rapidly heated.

Mechanism

Two different regimes may be

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