Vahterus Plate - Flow Rates; Operation; Principle of the Heat Exchanger

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3.3 Flow rates
Flowratesshouldbekeptasnearaspossibletothedesignvalues.Lowerowratescan
cause unexpected changes to the heat exchanger and make the plate surfaces dirty. If
aheatexchangerwithessentiallygreaterowratesisrequired,pleaseaskustocheck
the suitability of the exchanger.
4 Operation
4.1 Principle of the Heat Exchanger
Thepurposeofaheatexchangeristotransferheatfromonetoanotherowofuidvia
a corrugated heat transfer plate.
Theconstructionissuchthattheowsalternatethroughtheplatepack.Theowscan
becontrolledascounter-current,co-currentorcross-ow.
Structure of the Vahterus Plate & Shell heat exchanger
The Plate & Shell heat exchanger consists of circular plates welded into a pack, which
is then mounted in a pressure vessel.
Theowontheplatesideisthroughtheconnectionsontheendplatesviatheplatepack.
Theowontheshellsideisthroughtheshellconnectionsviatheplatepackusinga
owdirector.
The construction may be either fully welded or openable. The openable type has a re-
movable cover plate so that the plate pack can be taken out.
The following are the various applications of a PSHE exchanger: