Aalborg CHB
The Alfa Laval Aalborg CHB is a vertical, high-efficient marine steam boiler designed with an advanced convection section. In addition to conventional marine fuels, the boiler is fully compatible with a wide range of alternative fuels, like methanol. For low-emission port operations, the boiler can be equipped with integrated electric heating elements. This enables reliable steam production while the vessel is connected to shore power, eliminating the need for fuel firing during berth periods.
Steam boiler with an efficiency level of up to 89% at nominal load
- Reduced fuel consumption with corresponding reduction in vessel operating costs
- Decreased CO2 and NOx emission levels
- Good combustion due to proper furnace dimensioning
- Moderate loading and low material stresses
- Minimal refractory with water-cooled furnace bottom
The Aalborg CHB is a steam boiler, with an efficiency level of up to 89% at nominal load. With a number of advanced design features, the boiler provides several important benefits for ship owners and operators.
Thanks to an upgraded thermal design with optimized flue gas oxygen content, the Aalborg CHB offers a level of efficiency that far surpasses typical boilers of a similar capacity range. This ensures both lower operating costs and a reduced environmental impact.
How it works
Standard configuration
The Aalborg CHB design consists of a large furnace welded to vertical, plain-type convection tubes with spiral inserts. The low-alloyed plate material is easy to weld and is highly durable to prevent cracking. Aalborg CHB boilers have fully water-cooled furnaces and can be equipped with various burner types. The boiler comes complete with connections, foundation, inspection hatches, manhole, hand-holes, insulation with sheeting as well as all valves and fittings.
Other standard features include:
- Modulating boiler water regulation
- Burner type according to preference and the type of fuel used
- Alfa Laval Gas Valve Units (GVU) and Methanol valve units (MVU) for alternative fuels
- Processor-based control system
- Control panel with touchscreen interface for all necessary operation, communication, safety and alarm functions
- Integrated water-washing device
- Spare parts according to classification society demands
Technical data
Aalborg CHB boilers offer capacities ranging from 0.75 to 8 t/h. Standard design pressure is between 10 and 18 bar(g), with thermal output up to 6 MW. Several capacities and dimensions available for the standard product range.
Options
In addition to the standard configuration features, the Aalborg CHB can be equipped with a wide range of optional accessories according to a specific vessel’s needs. These include:
- Flue gas economizer
For optimized performance and fuel savings, boiler can be equipped with external flue gas economizer to further improve thermal efficiency. - Electrical heating elements
For emission-free port operation, electric heating elements can be integrated to provide steam while the vessel is connected to shore power. - Water Chemistry Solution
Ensuring the long life cycle of steam generation system equipment and maintaining operational reliability. - Pressurized deaerator
A pressurized deaerator ensures optimal feedwater quality by thermally degassing dissolved oxygen and other non-condensable gases. This significantly reduces corrosion risk and improves the reliability and longevity of the boiler system.
Service
We provide full support for our fired boilers. Our support covers their entire life cycle, beginning with design, installation and commissioning and extending past warranty throughout the service life.
Alfa Laval Service Agreements will help the operators of the systems. A fixed-period Service Agreement makes operation planning and cost projections more secure. A well-crafted maintenance strategy offers transparent cost control and safeguards performance, lengthening your equipment’s lifespan and reducing your total operating costs. Preventive maintenance is the key to reliable performance. Our Preventive Maintenance Programme comprises annual and 30-month services that comply with regulatory inspection schedules.