APV HybridWelded Plate Heat Exchanger

The Technology

Since 1981, the APV HYBRID HEATEXCHANGER has been firmly esta-blished in industry. The broad rangeof possible construction forms for thehybrid system allows to find the bestpossible solutions for given thermal,physical and geometrical conditions.The fully welded APV HYBRID PLATEHEAT EXCHANGER ensures thatdifferent media are safely keptseparate - even when higher pressuresand temperatures are applied. Thismeans that there is a wider range of

possible applications than where thegasketed plate heat exchangers can beapplied.The APV HYBRID HEAT EXCHANGERalso proves superior in any respectwhen compared to shell & tube heatexchangers with the usual construc-tion design and identical conditionsfor process engineering.Its compact design allows a heatingsurface density of 250 m2/m3. Thespecial construction of the flowpattern ensures that the heat transfer

for gases as well as for liquids isextremely enhanced. A furtheradvantage in comparison with shell &tube heatexchangers is the high economic effi-ciency of the APV HYBRID HEATEXCHANGER. The use of less materialmeans considerable cost reductionpotential when high-grade alloys arerequired.

Hybrid Shell & tube exchanger

Functionality

The schematic diagrams of the flowregime show that almost the entiresurface of the metal plates areused for heat exchange, so that fulladvantage is taken from the materialused. The APV HYBRIDPLATE HEAT EXCHANGER design hasno dead spots and provides veryefficient heat transfer at low pressuredrop values, which enables very closetemperature approach.The plate side flow and the tube sideflow are arranged in cross flowconfiguration in one or multiplepasses over the plates.The plate pattern forms ellipticaltube channels on the tube flow sideand wave flow passage on the plateside.The depth of the plate pressing canoptionally be increased in orderto allow larger flow rates or reducedpressure drop or the passage oflarger particles. This providespossibilities of optimal designto process requirements and isachieved by enlarging diametersof the elliptical tube channels, whilemaintaining the plate distanceon the plate flow side. It is alsopossible to achieve a wide-gapcondition on the plate flow side bywelding the plates at expandeddistance.The APV HYBRID PLATE HEATEXCHANGER can be designedfor a pressure range from full vacuumto 60 bar.

“Plate” side flow indicated by black arrows.

“Tube” side flow indicated by red arrows.

“Plate” side expanded.

The Construction

The dimensions of the heat exchangerblock are determined by the lengthand number of plates piled on top ofeach other.Depending on the process engineeringrequirements, plates of a lengthbetween 216 and 12,000 mm and aconstant width of 350 mm are weldedtogether to one or several gas-tightand pressure-resistant blocks. Thethickness of the sheets depends onrequirements. Generally, the sheetswhich are processed are between 0.5and 0.8 mm thick.The design of the APV HYBRID HEATEXCHANGER allows a flexiblearrangement in construction as well asin process engineering.

In addition to the wide variety ofpossibilities with the heat exchangerblock, the construction of the covercan also be altered according to re-quirements. The APV HYBRID HEATEXCHANGER can be used just as across flow or as a cross counter flowapparatus.Several passes can be made both onthe tube and the plate side. The flowcan be diverted several times bysimply installing deflector plates in thecovers. Thus, heat exchangers for awide variety of applications can beoffered.

Tube flow

Deflector plate

Connector plate

Plates

Flat embossing

Plates

Plate flow

Cross flow

Cross counter flow, plate flow side

Cross counter flow, tube flow side

The Applications

THE APV HYBRID PLATE HEATEXCHANGER offers the besttechnological solutions for a widenumber of applications, and excellentreturn on investment.

APV HYBRIDPLATE HEAT EXCHANGERwith unaltered state ofaggregation� gas-gas heat exchanger� gas-liquid heat exchanger� liquid-liquid heat exchanger

APV HYBRIDPLATE HEAT EXCHANGERwith altered state ofaggregation� folded film evaporator� circulatory evaporator� condensor

A great many problems in thermalprocess engineering can be solved byusing THE APV HYBRID PLATE HEATEXCHANGER.

THE APV HYBRID PLATE HEATEXCHANGER has for years beenapplied successfully in the followingindustries:

� sugar industry

� natural gas and petrochemicalindustries

� heat- and power stations

� refrigeration and heatingtechnology industry

� chemical and pharmaceuticalindustry

The Features

Like all our products the APV HYBRIDPLATE HEAT EXCHANGER is producedin accordance with the qualityassurance norm ISO 9000

Further advantages:� operational temperature range

between -200 °C and 900 °C� pressure range between vacuum

and 60 bar� fully welded construction

(no gaskets)

� broad range of possibleconstruction configurations

� its compact design allows theinstallation of up to 6000 m2

heating surface per unit� economic use of materials and low

weight � exchange surfaces with plates of

thickness between 0.5 and 1.0 mm� available in variety of high grade

alloys

� very efficient heat transfer even atlow pressure drop

� self-cleaning effect by strongturbulences, no dead spots in theflow

� works as gas or liquid exchanger,condenser or evaporator

� low filling charge and short lengthof stay, which protects the product

� possible to achieve very closetemperature approches

Tube flow

Plate pack

Plate flow

Flat embossing

Deflector plate

The APV Product Portfolio

Suitability by heat exchanger technologyCapacity: 1 kW - 150.000 kW (per unit)

ParaFlowgasketed plate heatexchanger�district heating�potable water

heating�industrial applications�solar heating�food applications�marine applications�power plants

ParaBrazedbrazed plate heatexchanger�district heating�heating�air�refrigeration�solar heating

ParaTubeshell & tubeheat exchanger�district heating�portable water

heating�vapour condensers�industrial applications

ParaShellwelded plateheat exchanger�district heating�heating�chemical industry�refrigeration industry�steam�power plants

HYBRIDfully welded plateheat exchanger�sugar industry�natural gas industry,

petrochemicalindustry

�heating and powerstations

�refrigeration�chemical and phar-

maceutical industry�power plants

APV Products,Heat Transfer8, PlatinvejDK-6000 KoldingDenmarkT: +45 70 278 444F: +45 70 278 445

APV ProductsSouth AmericaRua Joao Daprat. 23109600-010 Sao Bernardodo CampoSP-BrazilT: +55 11 4368 9222F: +55 11 4368 9381

APV (China) LTD1 Shunhe Road,Linhe industrial Zone,Shunyi, Beijing 101300.P.R.China.T: +86 10 8949 3000F: +86 10 8949 3224

APV ProductsHeat Transfer1200 West Ash StreetP.O. Box 1718Goldsboro,North Carolina 27533-1718USAT: +001 919 735 4570F: +001 919 731 5498

APV Thermotech GmbHRudolf-Breitscheid-Straße 16D-06556 ArternGermanyT: +49 3466 7427 0F: +49 3466 7427 29

[ 180OC / 35 bar ][ 195OC / 35 bar ]

[ 300OC / 60 bar ]

[ 300OC / 60 bar ]

[ 900OC / 60 bar ]

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liquid/liquid

vapour/liquid

gas/gas

condensergas/liquid

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