The plate heat exchanger is formed by a plurality of heat transfer plates in the form of corrugations or other forms, which are pressed at a certain interval by a gasket. A narrow mesh flow path is formed between the sheets. The four holes in the plate form the distribution tube and manifold of the medium. The sealing gasket seals the cold and heat medium in the heat exchanger, and at the same time, the cold and heat medium is separated and not mixed properly. In many channels, the hot and cold medium flows into each flow channel separately.It can counter flow and cocurrent flow process. The two media exchange heat through the plates.
The plate-type heat exchanger has a large logarithmic mean temperature difference and a small temperature difference at the end.plate heat exchanger is mostly cocurrent or countercurrent flow. The correction coefficient is usually about 0.95. In addition, the flow of cold and hot fluid in the plate heat exchanger is parallel to the heat exchange surface and there is no bypass flow, so that the temperature difference at the end of the plate heat exchanger is small, and the heat exchange with water can be Below 1℃