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Common failures of plate heat exchangers

Views:3     Author:Site Editor     Publish Time: 2020-12-18      Origin:Site

Common failures of plate heat exchangers


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Leakage

The main manifestations are leakage (small volume, discontinuous water droplets) and leakage (large volume, continuous water droplets).


The main places where leakage occurs are the seal between the plate and the plate, the two sealing leak grooves of the plate, and the inner side of the end plate and the compression plate.


Liquid

The main feature is that the medium on the higher pressure side is strung into the medium on the lower pressure side, and pressure and temperature abnormalities will occur in the system.


If the medium is corrosive, it may also cause corrosion of the gasket of the plate heat exchanger. Liquid leakage usually occurs in the diversion area or the secondary sealing area.


heat exchanger used in caustic soda production- GUPHE


Large pressure drop

The pressure drop at the inlet and outlet of the medium exceeds the design requirements, or even many times higher than the design value, which seriously affects the system's requirements for flow and temperature.


In the heating system, if the pressure drop on the hot side is too large, the primary side flow will be seriously insufficient, that is, the heat source is insufficient, resulting in the secondary side outlet temperature that cannot meet the requirements.


The heating temperature cannot meet the requirements, and the main feature is that the outlet temperature is low, which does not meet the design requirements.


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