| 摘要 |
PURPOSE:To contrive to improve the heat exchange efficiency by a method wherein low boiling medium and high temperature heat transfer medium are fed onto flat plates, which form a zig-zag flow passage so as to flow both the media in thin liquid film state in order to heat-exchange between the media by directly contacting with each other. CONSTITUTION:The high temperature heat transfer medium C and the low boiling medium D are respectively fed through the openings 24a and 25a of feed pipes 24 and 25 onto the flat plate 21a at the uppermost stage. During the process, in which the media C and D flow past on the flat plate 21a, both the media C and D heat-exchange with each other while directly contacting with each other. Because the heat-exchange action as mentioned above is similarly performed on the respective flat plates 21b-21n at respective stages, the low boiling medium D completely boils up and turns into vapor. The effective utilization of the space in a vessel 18 and high heat exchange efficiency are resulted by exchanging heat between two media C and D in thin liquid film by directly contacting with each other. |
