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Basic requirements for plate heat exchangers for refrigeration equipment
Jul 08, 2019

The plate heat exchanger is an efficient and compact heat exchange device that is superior to the shell and tube heat exchanger in many respects. Because the plate heat exchanger has the advantages of high heat transfer efficiency, small volume, light weight, convenient combination of area and process, it has been widely used in the refrigeration industry, for example, in chillers and air-cooled heat pump chillers. Heat exchangers such as evaporators, condensers, heat recovery heat exchangers, liquid subcoolers, and oil coolers for screw compressors are increasingly used.


As the energy requirement per unit volume of the refrigeration unit is increased, the heat exchange area per unit volume of the plate heat exchanger for the refrigeration equipment should also be correspondingly increased. The water-cooled and glycol-cooled units use a highly efficient and compact stainless steel brazed plate heat exchanger. The heat transfer efficiency is much higher than that of the shell-and-tube heat exchanger, and the fouling rate is only for the shell-and-tube condenser. 1/10.


Plate heat exchangers are divided into two installations according to the presence of the saddle-free bracket. For plate heat exchangers without saddle brackets, the heat exchanger should be installed on the saddle foundation of the brickwork. The plate heat exchanger after installation is not fixed at the moment, and the whole plate can be freely moved with the change of expansion. 


For plate heat exchangers with saddle bearings, the concrete should be laid flat on the foundation first. After it is completely dry, the saddle support is completely fixed with the ground concrete with anchor bolts. During the installation of the plate heat exchanger, sufficient space should be left at the front and rear ends of the heat exchanger for maintenance and

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