"> Alfa Laval S.p.A. AXP32-30P
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Alfa Laval S.p.A.

AXP32-30P

The Alfa Laval S.p.A. AXP32-30P is an AXP-family brazed plate heat exchanger developed for refrigeration and other duties requiring a high-pressure-capable compact exchanger. The AXP family is particularly associated with subcritical and transcritical carbon-dioxide refrigeration applications, while other compatible high-pressure fluids may also be used in approved designs. Heat is transferred through corrugated plates in a permanently bonded, gasket-free pack, giving high surface-area density and a small installation footprint. Depending on the selected refrigeration circuit it may serve as a gas cooler, condenser, evaporator, subcooler, heat-recovery exchanger or another refrigerant-side heat-transfer component. The numerical model and suffix distinguish variants within the AXP family, but the suffix must not be interpreted as a verified plate count or pressure rating without the product documentation. The designation AXP32-30P identifies a specific AXP high-pressure brazed plate heat exchanger configuration in the supplied equipment list. Exact capacity, pressure and temperature limits, materials, connection details and internal configuration must be verified from the unit nameplate and manufacturer documentation; refer to the manufacturer documentation for the exact figure.

Components & Design

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Technical Data

Model number AXP32-30P
Plate count (min) 16 plates
Plate count (max) 250 plates
Max flow rate 28.0 m3/h
Design pressure 48 bar
Application fusion-bonded all-stainless
Plate material Stainless steel (AISI 316)
Brazing material Stainless steel filler
Plate count (configured) 51 plates
Effective flow rate at duty point 28.0 m3/h
Configuration 30P configuration

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Common failures & inspection points

●Fouling, oil films or contamination on the fluid side reduce heat transfer and can cause abnormal approach temperatures
●Restricted strainers, poor refrigerant distribution or insufficient liquid flow causes unstable temperatures and reduced capacity
●Fatigue, corrosion or damage to the bonded plate pack can create internal leakage between circuits, detected by contamination, pressure behaviour or loss of charge
●External leakage at connections caused by vibration, thermal cycling or piping loads produces visible fluid loss or refrigerant alarms
●Freezing, liquid hammer or operation outside the approved pressure and temperature envelope can permanently damage the plate pack

Service & Maintenance

Trend inlet and outlet temperatures and pressures to identify gradual loss of thermal performance. Inspect the external plate pack, connections and supports for leakage, corrosion, vibration damage and excessive piping loads. Maintain upstream strainers and system cleanliness, and use only cleaning-in-place procedures compatible with the installed materials. Any indication of cross-contamination requires prompt investigation because the bonded plate pack is not normally opened for onboard repair; refer to the manufacturer documentation for test limits and cleaning criteria.

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Replacement Parts

Because the bonded plate pack is a sealed assembly, the principal strategic spare is a correctly specified replacement heat exchanger where redundancy and trading pattern justify carrying one. Also consider connection seals, strainer elements, isolation-valve service kits and approved cleaning consumables. A replacement unit must match the original materials, connections, duty and approval requirements.
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Equipment Model #154064 · ✓ still in production