The plate heat exchanger is used for the heat exchange of two media. There are usually four interfaces above, namely the cold side medium inlet, the cold side medium outlet after heat exchange, the hot side medium inlet, and the hot side medium outlet after heat exchange. The function of the interface is mainly to ensure the convection of the medium in the tube and realize the heat exchange effect.

    Connection form: There are four main connection forms for the four interfaces, namely, flange interface, loose flange interface, threaded interface, and quick connect interface. Among them, the flange interface is the most common one in practical applications.

    Depending on the position of the inlet and outlet, some of the four interfaces of the plate heat exchanger are on the same side, and some are on both sides. This is related to the process configuration of the plate heat exchanger.

    Most of the common plate heat exchanger processes are single processes. However, in order to increase the heat exchange area, multi-process combinations such as dual-process and three-process are also used.

    The four interfaces are on the same side, which is the most standard and most commonly used method for plate heat exchangers, and is usually used more in water-to-water heat exchange and steam-water heat exchange. The four interfaces are on a plane of the clamping plate and are distributed on the four corners according to the specified positioning size. This type of interface is mostly a single process.

    The dual process is usually used for heat exchange of oil medium. Due to the high oil density, high concentration, and low heat transfer coefficient, the use of two processes can increase the heat transfer coefficient to complete the heat exchange. The positions of the four interfaces are usually on both sides.

    Single flow means that the medium flows once inside the plate heat exchanger; dual flow means that the medium flows twice inside the heat exchanger; when there are multiple flows, the interfaces are generally not on the same side. If the four interfaces are on both sides, it is generally a multi-process configuration (except for special cases), and the medium travels twice or even multiple times inside the plate heat exchanger to achieve the desired heat exchange effect.

    Different interface configurations and takeover methods are suitable for different working conditions and media. Therefore, to choose the right one, you need to have a full understanding of the working conditions and the medium.