In the selection of plate heat exchanger, the thickness of the plate should be selected reasonably. If the thickness of the plate is too thin, the plate will be deformed; if the plate is thick, the heat exchange efficiency will decrease. Therefore, it is necessary to master the structure, corrugated form and principle of the plate heat exchanger plates in order to correctly choose the plate thickness.

    The plate is the core element of the plate heat exchanger. Generally, thin plates of metal material are pressed to form surface corrugations, and stacked to form fluid channels. Conventional plate thicknesses are: 0.4, 0.5, 0.6, 0.7, 0.8, 1.0mm.

    The plate thickness of the plate heat exchanger is mainly determined by the size of the working pressure. The higher the working pressure requirement, the thicker the plate thickness, the higher the corresponding manufacturing cost; otherwise, the lower. The user needs to decide according to the actual heat exchange conditions.

    The following Propellent briefly introduces the selection factors of plate thickness:
    1. Pressure

    Under normal circumstances, the normal working pressure is below 1.0Mpa, and the plate thickness is 0.5mm; if the pressure exceeds 1.0Mpa, 0.6mm is generally used. When the pressure is too high, the plate with a thickness of 0.5mm will be deformed due to the high pressure, and leakage will occur.

    2. Temperature

    The design temperature of the plate heat exchanger generally does not exceed 150°C. When the temperature is too high, a fully welded heat exchanger with high temperature and high pressure resistance is usually selected, and the thickness of the plate can reach 1mm.

    3. Corrosion

    For ordinary water, oil, water, and soda conditions, the thickness of the plate is generally 0.5mm, which is more conducive to heat transfer. When encountering strong acid, strong alkali or strong corrosive medium, the thickness of 0.6mm or 0.7mm can be used to extend the possibility of corrosion.