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Semi-welded Plate Heat ExchangersSeries FPG
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Semi-welded plate heat exchangers – refrigeration engineering without any risk
Gasketed plate heat exchangers reach their limits when it comes to critical media as e.g. refrigerants for which the use of gaskets is not advisable. For these demanding appli-cations FUNKE provides the semi-welded heat exchangers of the FPG-series. These are used as evaporators, con-densers or oil coolers in refrigerating, industry-, and pro-cess cooling as well as for special chemical applications.
Design and function The Plates of the FPG-Heat Exchangers base on the prov-en technology of the FUNKE FP-series. A cassette is made
of two corrugated heat exchanger plates which are assem-bled in a 180° angle to each other. Back to back these are laser welded alongside the sealing groove provided for the gasket. The aggressive medium or the refrigerant runs through the inlet aperture in this now created sealed fl ow channel between the plates. In the entry zone, the grooves of the plates have a special pattern so that the medium can freely run into the cassette.
On the outside, each cassette is fi tted with a gasket. When the critical medium passes from one cassette to the other, only two of the four ring gaskets at the apertures get in contact with the medium. These two ring gaskets are made of a special high resistant material. To ensure fl awless sealing these gaskets in special design are twice as high as conventional gaskets. Furthermore, in the entry zone of the medium the profi le of the gaskets are tapered on seal-ing ring and bridging piece.
FUNKE is a leader in the development and production of quality heat exchangers with a heat transfer area ofup to 2 400 m². The range of products comprises shell-and-tube heat exchangers, bolted and brazed plate heatexchangers as well as oil / air cooling units and electrical oil pre-heaters. Thus, as one of the few producers worldwide, FUNKE offers solutions with optimum thermodynamic designs for different industries and virtually all applications.
FUNKE focuses on customer orientation, highest quality standards, fl exibility and advisory skills – important benefi ts a company of just the right size is able to offer.
With partnershipinto the future
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The fl ow gap of the less critical medium between the single cassettes is sealed with application-specifi c gaskets of proven quality. The gaskets are glueless mounted with the absolutely reliable “T-Clip-System”.
Dimensions
Plate type Surfacearea / Plate
m²
A
mm
B
mm
C
mm
D
mm
E
mm
L2
mm
Connections Max. heat exchanger surface area m²
FPG 16 0,16 933 310 694 126 128 250-1000 DN 50 / 2” 30
FPG 31 0,30 1332 480 894 225 204 500-3000 DN 100 200
FPG 62 0,60 1835 620 1306 290 225 500-4000 DN 150 450
FPG 70 0,70 1740 760 1130 395 285 500-4000 DN 200 560
FPG semi-welded plates
In the entry zone of each medium double welding seams of the cassettes and double gaskets between the cassettes guarantee for leakage free operation without any danger of mixing of the media.
Advantages• Very fl exible system. The Adaption of the heat exchanger
to new operating conditions is feasible any time by ex-changing or adding components.
• Facile cleaning of gasketed exchanging surface.• Low soiling tendency.• Fast and ecomomic mounting.• High heat transfer coeffi cient.• Extreme corrosion resistance.• Uncomplicated changing of gaskets (combined gasket
frame).
MaterialAs standard, FUNKE heat transfer plates are produced in 1.4404 / AISI 316L. Alternatively titanium is available. The thickness of the material is 0.6 mm (other materials on request).
For the ring gaskets at the change-over area of the critical medium (as e.g. ammoniac or similar) chloropene gaskets are used. For the fl ow gap of the uncritical media NBR or EPDM-gaskets are used.
inlet channel for media
Combined gaskets:Gaskets made of two different materials, i.e. the ring gaskets are made of another material than the main gasket frame (e.g. chloropene for the ring and NBRfor the frame)
specially formed inlet channel welded seam
Applications
HVAC
Refrigeration Engineering
Chemical Industry
Sugar
Food
Marine
Power
Paper
Technical data:max. allowable pressure: 30 barmax. allowable temperature: 180°Cmin. allowable temperature: -35 °C
Specialist‘s Guaranteed Quality
Quality means safety. Each unit built by FUNKE is design and pressure tested. Additional approvals are also available in accordance with quality authorities such as:
• American Bureau of Shipping (ABS)• Bureau Veritas (BV)• Det Norske Veritas (DNV)• Germanischer Lloyd (GL)• Lloyds Register of Shipping (LRS)• Schweizerischer Verein für technische
Inspektionen (SVTI)• Technischer Überwachungsverein (TÜV)
as well as customers’ test and inspection regulations.
Funke Wärmeaustauscher Apparatebau GmbHZur Dessel 131028 Gronau / Leine · Germany
T +49 (0) 51 82 / 582-0F +49 (0) 51 82 / 582-48
FUNKE has been certifi ed according to DIN EN ISO 9001:2008 and is an approved manufacturer according to:
• EU Pressure Equipment Directive 97 / 23 / EC (PED), Module H / H1
• HP0 in connection with DIN EN 729-2• ASME U-Stamp• GOST R (incl. RTN & hygiene certifi cate)• China Certifi cate
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