Heat transfer in cryogenic fluid film boiling in a channel with smooth interrupted ribs

On the basis of experimental data analysis on heat exchange at nitrogen film boiling in the channel with smooth interrupted ribs a conclusion is made on the quasiequilibrium of vapour-liquid flow and primary effect of heat resistance of vapour film near the rib on the heat exchange. The results obtained are put into the basis of the methodics of calculation of cryogenic evaporators made of ribbed tubes and development of technology of production of similar devices