What Causes the Decreased Performance of Plate Heat Exchangers?

The main reasons for the deterioration in the performance of plate heat exchangers are as follows:

Scaling: Due to the presence of various dissolved substances and impurities in the medium, scaling is prone to form on the surface of the heat exchange plates, affecting the heat exchange efficiency. To prevent scaling, regular cleaning and maintenance should be conducted.

2. Clogging: Large particle or fibrous matter in the medium can easily accumulate within the plate heat exchanger, leading to pipeline blockages and reducing its operational efficiency. To prevent clogging, filters or mesh baffles can be installed.

3. Corrosion: The presence of acidic, alkaline, and other chemical substances in the medium can easily corrode the materials of the equipment, shortening their service life. To avoid corrosion, one can choose suitable materials or apply internal coatings for protection.

4. Inadequate unblocking: If a plate heat exchanger experiences blockage or scaling during operation, failing to unblock or clean it promptly will result in a deterioration of its operational performance.

5. Misoperation: Improper handling of operating parameters such as temperature, flow rate, and pressure can affect its operational efficiency. Therefore, it is essential to use and maintain the equipment properly.