Multistage regenerating type multiway evaporation cooling method and its heat exchanger

The multistage regenerating multiway evaporation cooling method is that when some gas flow into the dry side of the multiway heat exchange plate, it is first cooled before one part entering the wet side via the through holes between the dry side and the wet side is humidified, saturated, heated and exhausted while the other part is exhausted directly from the dry side. Or, the method may includes one gas flow entering the dry side and then being cooled and exhausted; and one other gas flow entering first the dry side, then the wet side via the holes and finally being humidified, saturated, heated and exhausted. The present invention has several passages for gas flows in different states and has increased temperature difference between different gas flows, increased heat conducting power, raised heat exchange efficiency, simple structure, small volume, light weight and low cost. 本发明公开了一种多级再生式多通道蒸发冷却方法及其换热器。多级再生式多通道蒸发冷却方法：一股气流流入多通道换热板的干侧，被逐渐冷却，其中部分依次通过干湿侧之间的通孔依次进入湿侧，加湿、饱和、升温排出，另一部分直接从干侧排出。一股(或多股)气流流入多通道换热板的干侧，被逐渐冷却，然后排出；另一股气流先进入干侧(与前面的气流不混合)，然后全部通过干、湿侧之间的传热壁的气孔依次进入湿侧，加湿、饱和、升温，然后排出；另一部分通过干侧直接排出。或者部分通过干湿侧之间的会热壁上的气孔依次进入湿侧，加湿、饱和、升温，然后排出。本发明可以利用多个通道通不同状态的气流，使得进行热交换的气流间温差增大，传热动力增大，提高热交换的效率，并且还具有结构简单，体积小，重量轻，造价低等优点。