"> Alfa Laval S.p.A. T20-150P
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Alfa Laval S.p.A.

T20-150P

The Alfa Laval S.p.A. T20-150P is listed as an Alfa Laval gasketed plate-and-frame heat exchanger for liquid heat-transfer duties. On ships, this type of exchanger is commonly installed in machinery-space cooling, heating or heat-recovery circuits where the selected plate and gasket materials are compatible with the media. Heat is transferred across corrugated plates arranged in a compressed plate pack, while gaskets direct the two fluids through separate alternating channels. Unlike a permanently brazed exchanger, a gasketed unit can be opened for inspection, cleaning and replacement of damaged plates or gaskets when correctly isolated. The T-series model designation and its suffix distinguish this entry from neighbouring configurations, but the exact plate count, heat-transfer area, gasket material, connection arrangement and design limits must be confirmed from the unit nameplate and manufacturer documentation. For the correct tightening dimension, pressure limits, cleaning method and material compatibility, refer to the manufacturer documentation for the exact figure.

Components & Design

Component data being added…

Technical Data

Model number T20-150P
Plate count (min) 20 plates
Plate count (max) 400 plates
Max flow rate 323.0 m3/h
Design pressure 16 bar
Max temperature 110 C
Application marine main cooling water
Plate material Stainless steel (AISI 316) standard; titanium / Hastelloy on request
Gasket material NBR / EPDM / FKM depending on duty
Plate count (configured) 305 plates
Effective flow rate at duty point 323.0 m3/h
Configuration 150P configuration

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Common failures & inspection points

●Plate-channel fouling or scaling caused by contaminated fluid can increase pressure drop and reduce heat-transfer performance
●Aged, damaged or incorrectly seated gaskets can cause external leakage or mixing at the plate edge
●Corrosion, erosion or cracking of a plate can cause internal cross-contamination indicated by unexpected fluid quality, tank level or pressure changes
●Incorrect plate sequence or uneven tightening after maintenance can cause leakage, poor flow distribution or reduced thermal performance
●Blocked strainers or restricted upstream piping can reduce flow and produce abnormal inlet-to-outlet temperatures

Service & Maintenance

Trend inlet and outlet temperatures, pressures and differential pressure so gradual fouling is detected before the exchanger loses required duty. Inspect the plate-pack edges, frame, tightening bolts, connections and supports for leakage, corrosion, distortion and piping loads. When opened, check plates for deposits, pitting, erosion, cracks and deformation and verify correct plate sequence and gasket seating during reassembly. Use only cleaning methods compatible with the installed plate and gasket materials. Refer to the manufacturer documentation for the exact tightening dimension, allowable pressure, temperature and cleaning limits.

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Replacement Parts

Carry the exact gasket type used in the installed plate pack, selected spare plates where operationally justified, connection seals and associated strainer elements. Plate and gasket materials must be matched to the exact exchanger configuration and process fluids before ordering.
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Equipment Model #154234 · ✓ still in production