Calculation of the boiling heat transfer coefficient for plate evaporators
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The boiling heat transfer coefficient of a plate evaporator (with cold water evaporating on this side) consists of the pool boiling heat transfer coefficient and the two-phase forced convection heat transfer coefficient. It is necessary to determine the influence factor S, which in turn requires calculating the Martinelli parameter Xtt. So how is the dryness degree used in calculating Xtt? At this point, the vaporization rate at the outlet is known. How is the dryness degree of the steam at the outlet calculated?
Get some help from the process team. @ylb913 @haiyangqh @maning1984 Thank you.
I checked the information again yesterday; for both the inlet and outlet on the boiling side, the calculation is based on the vaporization rate
It is essential to pay attention to the effect of viscosity on the heat transfer coefficient, that is, its impact on the state of the boiling zone.