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Alfa Laval AQ8SAlfaQTM AHRI-certified plate heat exchanger

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ApplicationsGeneral heating and cooling duties. Heating by means ofsteam.

Standard designThe plate heat exchanger consists of a pack of corrugatedmetal plates with portholes for the passage of the two fluidsbetween which heat transfer will take place.

The plate pack is assembled between a fix frame plate and amovable pressure plate and compressed by tightening bolts.The plates are fitted with a gasket which seals the interplatechannel and directs the fluids into alternate channels. Thenumber of plates is determined by the flow rate, physicalproperties of the fluids, pressure drop and temperatureprogram. The plate corrugations promote fluid turbulence andsupport the plates against differential pressure.

The plate and the pressure plate are suspended from anupper carrying bar and located by a lower guiding bar, bothof which are fixed to a support column.

Connections are located in the frame plate or, if either or bothfluids make more than a single pass within the unit, in theframe and pressure plates.

Typical capacitiesLiquid flow rateUp to 190 kg/s (3040 gpm), depending on media, permittedpressue drop and temperature program.

Water heating by steam2.5-15 MW at a steam condensation temperature of 150°C2.5-9 MW at a steam condensation temperature of 120°C

Plate typesAQ8S plates

Frame typesFM, FG and FS

Working principleChannels are formed between the plates and the corner portsare arranged so that the two media flow through alternatechannels. The heat is transferred through the plate betweenthe channels, and complete counter-current flow is createdfor highest possible efficiency. The corrugation of the platesprovides the passage between the plates, supports eachplate against the adjacent one and enhances the turbulence,resulting in efficient heat transfer.

STANDARD MATERIALSFrame plateMild steel, Epoxy painted

NozzlesCarbon steelMetal lined: Stainless steel, Titanium, Alloy C-276Rubber lined: Nitrile, EPDM

PlatesStainless steel Alloy 316 (Alloy 254, Alloy C-276 or TitaniumOther grades and material available on request.

GasketsNitrile, EPDM, Viton or HeatSealF™Other grades and material available on request.

TECHNICAL DATAPressure vessel codes, PED, ASME, pvcALS™Mechanical design pressure (g) / temperature

FM PED 10 MPa / 210°CFM pvcALS™ 1.0 MPa / 180°CFG PED 1.6 MPa / 180°C *)FG ASME 150 psig / 350°FFG pvcALS™ 1.6 MPa / 180°CFS PED 3.0 MPa / 160°CFS ASME 460 psig / 350°F*) Frame FG also approved for 1.2 MPa / 200ºC to allow use in steam systemswithout safety valves.

Connections

Size: DN200 / NPS 8 / 200A

FM PED EN 1092-1 PN10, ASME B16.5 CIass 150FM pvcALS™ EN 1092-1 PN10, ASME B16.5 CIass 150, JIS

B2220 10KFG PED EN 1092-1 PN16, ASME B16.5 CIass 150FG ASME ASME B16.5 CIass 150FG pvcALS™ EN 1092-1 PN10, ASME B16.5 CIass 150, JIS

B2220 10K,JIS B2220 16K

FS PED EN 1092-1 PN25, EN 1092-1 PN40, ASMECI. 300

FS ASME ASME B16.5 CIass 150, ASME B16.5 CIass300

Standard EN 1092-1 corresponds to GOST 12815-80 and GB/T9115.

Dimensions

880-2715 (35-107)

h69

8 (2

7.4)

H

363 (14.3)

W

Measurements mm (inch)

Type H W hAQ8S-FM 1405 (555/16) 740 (29⅛) 360 (14⅛)AQ8S-FG 1405 (555/16) 800 (31½) 360 (14⅛)AQ8S-FS 1435 (56½) 800 (31½) 390 (14⅛)The number of tightening bolts may vary depending on pressure rating.

Maximum heat transfer surface85 m² (910 sq. ft)

Particulars required for quotation- Flow rates or heat load- Temperature program- Physical properties of liquids in question (if not water)- Desired working pressure- Maximum permitted pressure drop- Available steam pressure

The thermal performance is third party certified throughthe AHRI Liquid to Liquid Heat Exchangers certificationprogram

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ECF00372EN 1506 Alfa Laval reserves the right to change specifications without prior notification.

Lenntechinfo@lenntech.com Tel. +31-152-610-900www.lenntech.com Fax. +31-152-616-289info@lenntech.com Tel. +31-152-610-900www.lenntech.com Fax. +31-152-616-289

tocAlfa Laval AQ8SApplicationsStandard designTypical capacitiesLiquid flow rateWater heating by steamPlate typesFrame typesWorking principleSTANDARD MATERIALSFrame plateNozzlesPlatesGasketsTECHNICAL DATAPressure vessel codes, PED, ASME, pvcALS™ ConnectionsDimensionsMeasurements mm (inch)Maximum heat transfer surfaceParticulars required for quotation.

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