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PLATE HEAT EXCHANGER DESIGN

GENERAL DESIGN OF PLATE HEAT EXCHANGERS

Typically, a plate heat exchanger comprise of a pack of corrugated plates in series made of steel, stainless steel, titanium and other corrosion resistant materials.
The plates are designed and fabricated in such a way that alternate the hot and the cold medium flows through the plate channels to perform the heat transfer,
The main difference between the plate heat exchanger types is the the way of pressing the plate pack together (casing design) to create an equipment with minimum two enclosed systems.
Plate packs can be of bolted (gasketed types), brazed, semi-welded and welded casing.

GASKETED PLATE HEAT EXCHANGER DESIGN

In general, a gasketed plate heat exchanger comprise of a Fixed Cover Plate (1) with Connection Ports incl. the Liner (2), if required, the Pipe Connection, e.g. flanges (3) and Foundation Supports (4), a Movable Cover Plate (5) with Carrying Bar (6) and a Guiding Bar (7), the End Support (8), Tighening Bolts and Nuts (9), Heat Exchanger Plate Pack (10.1) with Channel Gaskets (10.2), End Plate (11.1) with End Gasket (11.2), and a Heat Exchanger Start Plate (12.1) with Start Gasket (12.2).
Typically, this heat exchanger is used in chemical, pharmaceutical and food industry. Plants requiring clean systems, having high fouling as well as where particular plate material have to be applied, this gasketed plate heat exchanger is selected.

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Bild 1: Example of a Gasketed Plate Heat Exchanger with description of all items.


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Plate materials for specific applications can be carbon steel, stainless steel, titanium and many more. The selection of the material depends on the medium and the temperature to be used for the operation.
Gasket material can be NBR, EPDM or FPM. If required, the FDA (Food and Drug Administration) approval can be provided.
Frame material can be carbon steel, stainless steel and many more.
Lining of the frame openings is typically the same material as used for the heat exchanger plates.

"Double wall" plates are a special design to avoid a contamination between the mediums in case of demaged heat exchanger plates. Instead of only one intermediate plate, double overlying plates welded together around the openings are used. In case of a corroded plate, the medium will flow between the double plates and exit at the side part. The operator can detect the leakage.

The gasketed (bolted) plate heat exchanger is limited in the design condition of the frame, of the plate, the gasket and the connection.

Depending on the plate heat exchanger companies, the design of plate heat exchangers can vary. Above information is only a typical description of a gasketed plate heat exchanger. Therefore, we can not guarantee that above description is fully in compliance with all plate heat exchanger design variations available on the market.

However, we try to support you wherever we can.

Contact us: info@plateheatexchanger.eu

Your PLATEHEATEXCHANGER.EU team.


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