PILLOW-PLATE HEAT EXCHANGER
DAV PILLOW
DAV PILLOW heat exchangers [PPHE], also known as dimple plate or laser plate, represent an innovative type of heat exchangers. They consist of a bank of fully welded plate-type panels, which are characterized by “pillow-like” surface. The waviness of the channels enhances mixing in the fluid boundary layers, which consequently increases the heat transfer. PPHE can be made of stainless steel, Ni-Cr alloy or titanium.
The DAV PILLOW is ideal with medium with an extreme fouling and sedimentation rate (such as oily, sticky, dusty, abrasive or full of sediments fluids) where heat exchangers made with finned tubes or smooth tubes are not applicable. DAV PILLOW are therefore the best choice in applications such as heat recovery from extremely dirty fumes (incinerators, biomass boilers) or abrasive (glassworks and cement factories), or indirect heat exchange inside tanks for food & beverage processes.
The flat and smooth surface of plates can be cleaned easily and quickly with a steam jet or high-pressure cleaners, resulting in low maintenance costs.
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