Plate Heat Exchanger · Heat Exchangers
The Alfa Laval S.p.A. AXP32-180P 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 AXP32-180P 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.
What our service work and the manufacturer documentation say about keeping this model running.
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.
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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