A compact and versatile type of heat exchanger consisting of rows of compacted and sealed corrugated metal plates between which liquid flows, transferring heat through the surface of the plates (see Fig. 41). The hot and cold liquids are channelled between alternating plates. The corrugation effect causes turbulence of the heat-transfer liquids thereby enhancing heat transfer. The size and area of the plate heat exchanger can be increased or decreased by adding or removing plates.

Fig. 41