Plate heat exchanger is a kind of high efficiency Heat Exchanger which is composed of a series of corrugated metal sheets.A thin rectangular passage is formed between the plates through which heat is exchanged.Plate Heat Exchanger is an ideal equipment for liquid - liquid and liquid - vapor heat exchange.It has the characteristics of high heat exchange efficiency, small heat loss, compact and light structure, small floor space, wide application and long service life.Under the same pressure loss, the heat transfer coefficient is 3-5 times higher than that of the tubular heat exchanger, covering an area one-third of that of the tubular heat exchanger, and the heat recovery can be as high as over 90%.
Plate heat exchanger is a new type of heat exchanger which is composed of a series of corrugated metal sheets.It is widely used in daily life, generally used for household or industrial heating to provide heat exchange.Today, let's analyze the circulation schematic diagram of plate heat exchanger and see how it works.
Removable plate heat exchanger is made up of many stamping with corrugated sheet in a certain interval, all round through the gasket seal, with overlapping framework and compression screw compression, plate and gasket four Angle hole forming fluid distribution pipe and gathering, reasonably separate hot and cold fluid again at the same time, make its respectively in each panel on both sides of the flow in the flow channel, through the plate heat exchanger.
Heat transfer sheet is the core part of heat exchanger. The forming process and material characteristics of the sheet have a direct impact on the sealing and heat transfer efficiency.The heat exchanger usually takes water as the cooling medium, and most of the plates are made of stainless steel sheet, and the corrugated flow ends are pressed on the plates. The space between two adjacent plates is the medium flow passage. When the cold and hot fluids flow on both sides of the plates, the heat is exchanged through the plates.
Generally, the heat transfer coefficient K value of plate heat exchanger is within the range of 3,000-6,000W /m '℃. Meanwhile, the two media flow almost in full countercurrent flow with high heat conduction efficiency.Under the same heat transfer efficiency, plate heat exchanger only needs 1/2 to 1/4 of the area of Shell And Tube Heat Exchanger to achieve the same heat transfer effect.
The single flow structure of plate heat exchanger is that there are only two plates without heat transfer, the first plate and the tail plate.Double flow structure: Each flow has 2 plates without heat transfer.
After 1-2 years of use of plate heat exchanger, necessary inspection, cleaning, pressure test
