Do you now know what we should know when selecting plate heat exchangers? I believe everyone is not that clear, so please follow me to understand.

1. The choice of plate type of plate heat exchanger.

The plate type or corrugated type should be determined according to the actual needs of the heat exchange occasion. If the flow rate is large and the pressure drop is small, the plate type with small resistance should be selected, otherwise, the plate type with large resistance should be selected. According to the fluid pressure and temperature, determine whether to choose a detachable or a brazed type. When determining the plate type, it is not advisable to choose a plate with a single plate area that is too small, lest there are too many plates, the flow rate between the plates is too small, and the heat transfer coefficient is too low. This problem should be paid more attention to for larger heat exchangers.

Second, the choice of process and flow channel.

The process refers to a group of parallel flow channels in the plate heat exchanger in which a medium moves in the same direction, and the flow channel refers to the medium flow channel composed of two adjacent plates in the plate heat exchanger. Generally, several flow channels are connected in parallel or in series to form different combinations of cold and hot medium channels.

3. Pressure drop check.

In the design and selection of plate heat exchangers, there are generally certain requirements for pressure drop, so it should be checked. If the check pressure drop exceeds the allowable pressure drop, the design selection calculation needs to be re-calculated until the process requirements are met.