Plate heat exchangers, sometimes called PHE, are specially designed to transfer heat between two fluids. The fluids are spread out over a large surface area between metal plates. Plate heat exchangers are best suited for heat transfer between medium and low pressure fluids. For high pressure fluids, a brazed plate heat exchanger is generally used.
The design of plate heat exchangers usually uses stainless steel for the metal plates because of its strength and high temperature resistance. Rubber gaskets are used to cement the plates into place. The large surface area of the plates allows for a quick transfer, and because each chamber is made thin, the majority of the liquid contacts the actual plate, making the process even quicker. Learn more about the design of a plate heat exchanger.