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AQ Series (Exhaust Gas Economiser)

Boiler · Boilers

Technical data from manufacturer or class sources · not yet verified by a person​​‍‌​⁠‌⁠‍⁠⁠​‍‍‌​​⁠‍​
500-30,000 kW thermal recoveryCapacity
Exhaust Gas / Feedwater → SteamMedium

Die Aalborg AQ-Serie ist der weltweit meistverbreitete Abgas-Economiser auf Seeschiffen. Installiert im Schornstein, nutzt er die Abgaswärme der Hauptmaschine zur Dampferzeugung oder Frischwasser-Vorwärmung. Sootfires (Rußbrände) in Economisern sind eine der häufigsten und gefährlichsten Brandursachen auf Seeschiffen — SOLAS und ISM Code verlangen strenge Wartungsprotokolle. Die AQ-Serie ist in jeder Schiffsgröße vertreten, von Coastal bis ULCC.

Specifications

Technical data.

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TypeExhaust Gas Economiser (Finned Tube)
Drive TypePassive (exhaust gas waste heat)
ConstructionFinned steel tubes, vertical installation in funnel
Boiler TypeAlfa Laval Aalborg Exhaust Gas Boiler / Economizer (Abgaskessel / Abgaswärmetauscher)
Service

Service notes.

What our service work and the manufacturer documentation say about keeping this model running.

Soot blowing MINIMUM daily when running on HFO. Exhaust gas temperature differential monitoring (rise = soot buildup = fire risk). Water-side treatment per boiler standards. Complete tube inspection at drydock. Tube thickness measurement with ultrasound.

Spares

Replacement Parts

Spare parts notes

Alfa Laval Aalborg. Tube sections: 8-12 weeks. Soot blower elements: 2-4 weeks. Keep onboard: soot blower spare elements, tube plugs for emergency plugging.

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