Boiling and Two‐Phase Flow in Microchannels

A new model for flow boiling heat transfer coefficient inside horizontal tubes with twisted-tape inserts

“…Ribatski (2007) highlighted the fact thatKedzierski and Kim (1998) used 15 empirical constants in their correlation for a single twist ratio and, hence, the constants are related to the effects of the fluid properties on the process. Moreover, Thome and Ribatski (2007) pointed out that it is not clear the reason for the exponent of the liquid Prandtl number be a function of the vapor quality, ranging from a value of c 2 = 1.108 for x = 0 to only c 2 = 0.193 for x = 1.…”