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Plate Heat Exchanger

Standard Design and Working Principles

The plate heat exchanger consist of a set of corrugated metal plates which is available in different material (stainless steel, titanium, etc), assembled between two frame plates compressed by tightening bolts, guided by a upper carrying bar and a lower guide bar.

The plates are fitted with gaskets at the outer edges and around the ports which are so arranged that the two fluids are directed into alternately into the passages formed between plates where the heat transfer will take place through the thin plates and counter current flow is created for highest efficiency. The number of plates is determined by the flow rate, physical properties of the fluids, pressure drop and temperature program. The plate corrugations promote fluid turbulence and support the plates against differential pressure.

No intermixing of the media or leakage to the surroundings will take place as gaskets around the edges of the plates seal the unit. The corrugation of the plates provides a suitable passage between the plates, support of each plate against the adjacent one and a strong turbulence resulting in maximum heat transfer efficiency.


  • Space savings of up to 90%. PHE occupies less floor space and weighs much less than a tubular exchanger for the same application.
  • Easy to dismantle, inspect and maintain. The ease of disassembly and reassembly facilitates cleaning and can make downtime for this purpose minimal.
  • Low liquid hold-up avoids thermal breakdown of heat sensitive liquids.
  • The turbulent flow reduces fouling and sedimentary deposits to a minimum.
  • Plates with different but compatible geometry can be alternated to regulate heat transfer to meet precise process demands.
Plate Heat Exchanger Flow Principle
Flow principle of a plate heat exchanger
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