Exhaust Gas Boiler · Boilers
The Alfa Laval S.p.A. Aalborg-XW-A13 is an exhaust gas economizer in the Aalborg XW family for recovering waste heat from diesel-engine exhaust gas. It is normally installed in the main-engine exhaust path and connected to the ship's steam-and-water system, commonly through an auxiliary boiler or separate steam drum. The XW design uses water tubes with forced circulation and extended gilled heating surfaces to transfer exhaust heat into the circulating boiler water. Its available heat recovery follows engine load, exhaust-gas temperature and the cleanliness of the heating surfaces rather than a directly controlled burner input. The A13 designation identifies this configuration within the wider Aalborg XW range; exact dimensional and performance differences from neighbouring XW models must be confirmed from manufacturer documentation. Reliable circulation, correct boiler-water chemistry and effective gas-side cleaning are central to safe and efficient operation.
What our service work and the manufacturer documentation say about keeping this model running.
Inspect gas-side heating surfaces for soot, oil residue and corrosion, and verify that the installed soot-cleaning arrangement is effective. Check circulation pumps, valves and piping for reliable unobstructed flow. Examine accessible tubes, headers, casing, supports and expansion arrangements for leakage, cracking, corrosion and signs of overheating. Review boiler-water treatment records and investigate abnormal make-up-water consumption. Verify relevant pressure and temperature indication, alarms and protective functions. Refer to the manufacturer documentation for exact inspection criteria, test pressures and acceptance limits.
Carry suitable gaskets and sealing materials for accessible joints, service parts for the circulation pump and associated valves, and common pressure and temperature instrumentation spares used by the boiler system. Keep consumables and wear parts for the soot-cleaning equipment where fitted. Approved tube-repair materials may be carried only where permitted by the manufacturer, class and the vessel's repair procedures.
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