PLATE HEAT EXCHANGERS
Heat exchangers in this category are an innovative type. The undulation of the channels improves the mixing in the boundary layers of the fluid, which consequently increases the heat transfer. The flat and smooth surface of the plates can be cleaned easily and quickly with a steam jet or with a pressure washer, resulting in low maintenance costs. Pillow plates are mainly used for heat exchange between a gaseous and a liquid medium; the cross flow type is instead used for heat exchange between two gaseous medium.