Abstract
This paper discusses a relation between the microlayer model for the critical heat flux and the micro-bubble emission boiling, MEB. Based on the microlayer model, the mean heat flux of nucleate boiling is expressed by a quintic equation of superheat, which gives different critical point from the CHF on the boiling curve. It depends on a period of bubble departure as well as a density of nucleation site. In the MEB situation, the size of the emission bubble is very small and the site density is so high due to the large superheat. We consider that there is a possibility to express the heat transfer of MEB by the microlayer model.