Plate Heat Exchanger · Heat Exchangers
The Alfa Laval S.p.A. AlfaNova-76 is a plate heat exchanger from the AlfaNova family and is listed for marine heat-transfer service. AlfaNova units use a compact all-stainless plate construction with fusion-bonded joints rather than conventional elastomer gaskets, making the family suitable where copper brazing or gasketed construction is undesirable. On board, such an exchanger may be installed in cooling, heating or heat-recovery circuits when its materials and approved operating envelope match the service. Heat passes through corrugated plate channels while the two media remain separated inside the plate pack. The suffix in the supplied model name distinguishes this configured variant from neighbouring AlfaNova entries, but plate count, heat-transfer area, pressure class and connection details must be confirmed from the exact unit documentation rather than inferred from the name. For allowable pressures, temperatures, cleaning chemistry and other exact limits, refer to the manufacturer documentation for the exact figure.
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What our service work and the manufacturer documentation say about keeping this model running.
Trend temperatures, pressures and pressure drop and investigate gradual loss of thermal performance. Inspect external surfaces, connections, supports and adjacent piping for leakage, corrosion, vibration and excessive loads. Use an approved flushing or cleaning-in-place method compatible with the exchanger materials and deposits because the bonded plate pack is not normally opened for routine plate replacement. Investigate any indication of internal cross-contamination promptly. Refer to the manufacturer documentation for exact operating and cleaning limits.
The principal strategic spare may be a complete correctly specified exchanger where vessel redundancy and trading pattern justify it, together with connection seals, strainer elements and approved cleaning consumables. Any replacement must match the exact materials, connections, duty and approved operating envelope.
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