High thermal performance plate evaporator working under nucleate boiling conditions

摘要

High thermal-performance plate evaporator working in nucleate boiling conditions, in which the flow ducts of the hot fluid and of the liquid to be evaporated are defined by the compartments of a structure of juxtaposed plane and parallel metal plates (37, 38), characterised in that, on at least part of their extent, the ducts (35) of the liquid to be evaporated comprise confined spaces (46), located from place to place, the restricted thickness of which afforded to the flow is at the most equal to the diameter of a vapour bubble forming on the wall of a hot plate during nucleate boiling.