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Alfa Laval
T20 - Plate heat exchanger

T20 - Plate heat exchanger

Product catalog summary

Applications
The T20-BFG plate heat exchanger is designed for general heating and cooling duties.

Standard Design
The exchanger consists of corrugated metal plates with portholes for fluid passage. These plates are assembled between a fixed frame plate and a movable pressure plate, compressed by tightening bolts. Gaskets seal the inter-plate channels and direct fluids into alternate channels. The number of plates is determined by flow rate, fluid properties, pressure drop, and temperature program. The corrugations promote turbulence and support against differential pressure. The frame and pressure plates are suspended from an upper carrying bar and located by a lower guiding bar, fixed to a support column. Connections are located in the frame plate or both frame and pressure plates if multiple passes are required.

Typical Capacities
Liquid flow rate can reach up to 225 kg/s (3600 gpm), depending on media, pressure drop, and temperature program.

Plate and Frame Types
Plate types include T20B and T20M. Frame types include FM, FG, and FS.

Working Principle
Channels are formed between plates, with corner ports arranged for alternate media flow. Heat is transferred through the plate, creating counter-current flow for high efficiency. Plate corrugation enhances turbulence and supports plates.

Standard Materials
Frame plate: Mild steel, epoxy painted. Nozzles: Rubber lined, carbon steel, or metal lined with stainless steel, titanium, or Alloy C-276. Plates: Stainless steel Alloy 304, 316, Alloy C-276, or Titanium. Gaskets: Nitrile or EPDM.

Technical Data
Mechanical design pressure/temperature varies by frame type: FM pvcALS™ 1.0 MPa/180°C, FG pvcALS™ 1.6 MPa/180°C, FG PED 1.6 MPa/180°C, FG ASME 150 psig/350°F, FS PED 3.0 MPa/160°C, FS ASME 400 psig/320°F.

Connections
FM pvcALS™: Size 200 mm DIN PN10/JIS 10 K, Size 8" ASME CI. 150. FG pvcALS™: Size 200 mm DIN PN16/JIS 16K, Size 8" ASME CI. 150. FG PED: Size 200 mm DIN PN10/16. FG ASME: Size 8" ASME CI. 150. FS PED: Size 200 mm DIN PN25/40. FS ASME: Size 8" ASME CI. 300/400.

Maximum Heat Transfer Surface
630 m² (7000 sq. ft).

Dimensions
T20-FM: H 2145 mm (84 ½"), W 780 mm (30 11/16"), h 285 mm (11 7/32"). T20-FG: H 2145 mm (84 ½"), W 780 mm (30 11/16"), h 285 mm (11 7/32"). T20-FS: H 2183 mm (84 ½"), W 780 mm (30 11/16"), h 323 mm (12 11/16").

Quotation Requirements
Necessary details include flow rates or heat load, temperature program, physical properties of liquids (if not water), desired working pressure, maximum permitted pressure drop, and available steam pressure.

Catalog excerpts

T20 T20-BFG Plate heat exchanger Applications General heating and cooling duties. Standard design The plate heat exchanger consists of a pack of corrugated metal plates with portholes for the passage of the two fluids between which heat transfer will take place. The plate pack is assembled between a fix frame plate and a movable pressure plate and compressed by tightening bolts. The plates are fitted with a gasket, which seals the interplate channel and directs the fluids into alternate channels. The number of plates is determined by the flow rate, physical properties of the fluids, pressure drop and temperature program. The plate corrugations promote fluid turbulence and support the plates against differential pressure. The frame plate and the pressure plate are suspended from an upper carrying bar and located by a lower guiding bar, both of which are fixed to a support column. Connections are located in the frame plate or, if either or both fluids make more than a single pass within the unit, in the frame and pressure plates. Typical capacities Liquid flow rate Up to 225 kg/s (3600 gpm), depending on media, permitted pressure drop and temperature program. Plate types T20B and T20M plates Frame types FM, FG and FS Working principle Channels are formed between the plates and the corner ports are arranged so that the two media flow through alternate channels. The heat is transferred through the plate between the channels, and complete counter-current flow is created for highest possible efficiency. The corrugation of the plates provides the passage between the plates, supports each plate against the adjacent one and enhances the turbulence, resulting in efficient heat transfer. Flow principle of a plate heat exchanger

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h 1478 (58.2") H W 353 (13.9") 930-3930 (36-155") PCT00042EN 0701 How to contact Alfa Laval Up-to-date Alfa Laval contact details for all countries are always available on our website at www.alfalaval.com STANDARD MATERIALS Frame plate Mild steel, Epoxy painted Nozzles Rubber lined Carbon steel Metal lined: Stainless steel, Titanium, Alloy C-276 Plates Stainless steel Alloy 304, Stainless steel Alloy 316, Alloy C-276 or Titanium Gaskets Nitrile or EPDM TECHNICAL DATA Mechanical design pressure (g) / temperature FM pvcALS™ 1.0 MPa / 180°C FG pvcALS™ 1.6 MPa / 180°C FG PED 1.6 MPa / 180°C FG ASME...

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