Which mechanism limits maximum heat transfer rate during pool boiling as surface temperature increases?

💡 Explanation

As surface temperature rises during pool boiling, the heat flux eventually reaches a critical point where nucleate boiling transitions to film boiling; formation of a continuous vapor film occurs because vapor generation overwhelms liquid supply, insulating the surface. Therefore, a continuous vapor film results, rather than radiation increase, higher convection, or scale resistance each having a different influence mechanism.

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