The structure and principle of the plate heat exchanger determine its compact structure, small footprint, high heat transfer efficiency, great operational flexibility, wide application range, and convenient installation and cleaning. The average temperature difference between the two media can be as small as 1℃ and the heat exchange efficiency can reach more than 99%. Therefore, the plate heat exchanger is an advanced equipment with highly efficient, energy-saving, material-saving, and cost-effective. It has been widely used in electric power, refrigeration, medicine, petrochemical, food, and other industrial fields.
According to the working condition and use characteristics of the PHE, each plate heat exchanger is consists of less than dozens of pieces, and hundreds of pieces of plate, up to 600 or 700 pieces. As long as one of the sealing gasket seals fails and internal leakage or leakage occurs, the entire plate heat exchanger needs to be shut down for maintenance.