The most common design is to have the plates pressed against each other with gaskets in between. This kind of heat exchangers have especially been popularized by the company Alfa Laval, people sometimes referring them as "Alfa Laval Plate Heat Exchanger". However such a design leads as a consequence to high pressure drop which will limit the application when high flow rates are involved. This allows to have a very high heat exchange coefficient and as a consequence a rather compact heat exchanger compared to other designs which can make them an interesting proposal when space or costs are a constraint. Plate and frame heat exchangers have a very specific design compared to other each exchangers : the fluid is split into wide but narrow channels in between thin plates. Plate heat exchangers definition What is a plate heat exchanger ?
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