Aalborg OS-TCi
Intended for auxiliary use, Alfa Laval Aalborg OS-TCi is a fired marine boiler for producing steam. Designed with helix tubes that provide a larger heat transfer area than conventional solutions, it offers fuel-saving efficiency. Ready for the fuel transition, the OS-TCi can use oils, biofuels and one alternative fuel of your choice. Additionally, it can be configured as an electric hybrid. These options can be implemented directly, or the boiler can be prepared for their installation later.
Self-cleaning fired boiler with multi-fuel and hybrid options
- Produce 1200–8000 kg/h of steam with high fuel efficiency
- Maintain efficiency and save fuel with the boiler’s self-cleaning TCi (Turbo Clean, intelligent) technology
- Rely on trouble-free uptime, secured through robust design and user-friendly control
- Advance decarbonization by configuring for your choice of alternative fuels
- Take advantage of shore power or surplus electricity on board through hybrid operation
Effectively self-cleaning, the Aalborg OS-TCi is a future-proof choice that lets you transition to LNG, methanol or ammonia – whenever the time is right for you. Hybrid and hybrid-ready options add to its flexible configuration.
The Aalborg OS-TCi is a marine fired boiler with decarbonization and the fuel transition in mind. Besides operating on today’s fuels, including low-sulphur fuels, biofuels and LNG, it is designed for compatibility with methanol and the other emission-reducing fuels that will appear over time. Alfa Laval’s “ready boiler” concept provides a future-proof platform, allowing the existing burner and boiler pressure section to be adjusted as needed.
Regardless which fuel is used on board, the Aalborg OS-TCi delivers fuel savings through its exceptional thermal efficiency and self-cleaning TCi (Turbo Clean, intelligent) technology. The TCi cleaning process, which promotes efficiency and ensures a long boiler service life, is automatic but can also be initiated manually.
Alfa Laval Marine Service
Worldwide and 24/7, Alfa Laval Marine Service is your path to greater uptime, optimized performance and true peace of mind. Our network is always on call, and our service offering brings reliability, efficiency and compliance throughout your equipment's lifetime.
24/7 Service & Support
Contact us anywhere, anytime:
+46 4636 7700
marine.service@alfalaval.com
Our global network of service centres, distribution centres and field service engineers is always ready at assist you.
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Application
Typically used to generate steam for tank cleaning, HVAC and engine room consumers, the Aalborg OS-TCi boiler can also function as a steam drum for one or more exhaust gas boilers. Additionally, it is approved for boil-off gas (BOG) management on vessels that use LNG as fuel.
Design for our marine boiler
The Aalborg OS-TCi boiler is delivered with a preassembled Aalborg burner built on Alfa Laval's innovative MultiFlame (MF) concept: MF PA or MF SAS. Both boiler and burner are engineered and produced in-house to ensure the highest reliability. The compact design is standardized but customizable, which means easy, time-saving installation.
Aalborg OS-TCi boiler
A fired section with helix tubes provides a large heat transfer area with high efficiency. The steam passes through the heat bundle twice, which ensures that the steam is absolutely dry.
Aalborg MF PA burner
The Aalborg MF PA is a side-fired, pressure-atomizing burner that supports conventional fuels and gas fuels like LNG.
Aalborg MF SAS burner
The Aalborg MF SAS is a side-fired, steam/air-atomizing burner that supports conventional fuels and methanol.
Technical data (standard application)
Capacity [kg/h] | 1,200–8,000 |
Weight (incl. insulation) [kg] | 4,700–16,800 |
Diameter (incl. insulation) [mm] | 1,370–2,420 |
Height (incl. exhaust gas boxes) [mm] | 3,875–5,065 |
Connections | Flanged |
Insulation [mm] | 75 |
Maximum working pressure [bar(g)] | 10 |
The right spare parts and services for Aalborg boilers
Our portfolio contains all you need to secure performance and uptime from your Aalborg marine boilers – beginning with genuine spare parts, but also much more. Turn to us for reliability, efficiency and optimization throughout your vessel’s lifetime.
Get boiler spare parts quickly and easily. We deliver fast from the largest stock of genuine Aalborg spare parts, and our experts are always available to identify what you need.
Make your existing boiler’s performance even smoother and more dependable. Our upgrades bring your equipment up to today’s Aalborg boiler standards of reliability, durability and control.
Secure efficiency and reduce operating costs by letting us inspect and adjust your boiler system. Our experts restore top performance and identify opportunities for further improvement.
Use your time in dry dock to secure continued performance from your Aalborg boiler. Engage our experts for inspection and service – and return to sea with peace of mind.
Training
Optimize boiler performance and lower cost of ownership by increasing crew skills in maintenance and troubleshooting.
Aalborg boiler solutions for LNG as fuel
Alfa Laval Aalborg dual-fuel boilers are more than an efficient solution for your steam and hot water needs. Able to handle both free flow and methane mixed with inert gas, they provide safe, effective ways to manage boil-off gas (BOG) and simplify operations connected with tank inspection.

Marine equipment and solutions for methanol as fuel
Built on a century of thermal expertise, Alfa Laval Aalborg boilers are prepared to run on methanol, thanks to our future-proof MultiFlame burner concept. Adding to our already extensive combustion knowledge, we are now conducting large-scale methanol testing at the Alfa Laval Test & Training Centre.

Alfa Laval Test & Training Centre
As the marine industry decarbonizes, reliability is paramount in any fuel-related equipment. Alfa Laval ensures reliability with new fuels by combining long experience and deep fuel insights with extensive testing at the Alfa Laval Test & Training Centre. The facility’s unique 2800 m2 testing space plays a key role in many fuel research projects.
