Development Of Plate Type Heat Exchangers

  Plate heat exchanger is a new type of high heat exchanger, which is composed of a series of corrugated metal sheets.A number of small flow sections Development of plate type heat exchangersare formed between each plate, and heat is exchanged through the heat transfer platesCompared with the conventional shell and tube heat exchanger, its heat transfer coefficient is much higher under the same flow resistance and pump power consumption.There is a trend to replace shell and tube heat exchanger in the scope of application.Since 1960s, it has been widely used in foreign countries.The application of plate heat exchanger in China is far less than that in foreign countries, which is related to people's understanding of plate heat exchanger, usage habits and the level of domestic products.In the 1970s, plate heat exchangers were mostly used in food, light industry and machinery sectors.In the early 1970s, it expanded to the central heating of civil buildings.In the mid-1980s, with the increase of central air conditioning in high-rise buildings and the upgrading of air conditioning and refrigeration equipment products, the application in the field of air conditioning and refrigeration has been among the best.The main types of plate heat exchanger are frame type (detachable) and brazed type. The main types of plate are herringbone corrugated plate, horizontal flat corrugated plate and nodular plate. Famous foreign manufacturers include Alfa lava, swep, GEA, APV / awei, Hisaka and Sondex.