Some empirical equations for heat transfer in two-phase flow

8 Some empirical equations for heat transfer in two-phase flow 

According to [4.96], bubble growth begins when the wall is superheated to a certain critical value with respect to the boiling point  

The transferred heat flux in the subcooled boiling region follows from 

Here aB is the heat transfer coefficient for nucleate boiling from section 4.2.6, ac is that by forced, single phase flow, sections 3.7.4, page 338, and 3.9.3, page 384, L is the adiabatic mixing temperature of the liquid. 

Subcooled boiling changes to saturated boiling when the quality, according to (4.116), is x(h = 0. Heat transfer is strongly dependent on the heat flux, but weakly dependent on the mass flux and the quality it holds that 

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