Stay cool, Sail cool
90/10 Copper - Nickel Box Cooler
These parts are manufactured by VULKAN COUPLINGS, Germany pioneers in marine drive technology.
Furtermore, VULKAN components are used in powerplant facilities or in industrial applications as well.
VULKAN production program includes following types, most available from the manufacturing site in Germany but some common ones are also available from our warehouse in Moschato:
90/10 Copper - Nickel Box Cooler
Weka’s signature box cooler is constructed using uncoated 90/10 copper-nickel tubing. This alloy does not require a protective coating or ICAF (impressed Current Anti-Fouling) system due to its inherent corrosion resistance to seawater and natural anti-fouling capabilities. To protect the uncoated box coolers against potential stray current corrosion, a WEKA Guard™ and WEKA Protector™ system are applied. This exclusive design is successfully utilized in hundreds of vessels in fresh and saltwater applications worldwide.
Isolation
Our box coolers are constructed to be completely isolated from the hull during installation and in operation. Isolation from the ship’s hull combined with the WEKA Protector™ allows the copper-nickel to maintain its anti-fouling capability.
Technology
The versatility of the WEKA box cooler is equally matched by its cooling prowess. Its straightforward design can be adapted into various configurations and shapes to precisely fit available space and cooling demands.
A typical box cooler features a U-shaped tube bundle, firmly secured with a tube sheet and a waterbox to guide the flow of water. This bundle is fastened with a gasket to a mounting frame, anchoring the cooler to the vessel’s hull. This construction technique enables the removal of the waterbox while keeping the bundle fixed to the hull, preventing seawater from entering the vessel when the cooler is in use.
To cater to a broad spectrum of cooling requirements and diverse structural limitations, WEKA box coolers are available in multiple configurations, encompassing both round and rectangular designs.
WEKA Marine’s box coolers are ideal for small to medium-sized vessels, including tugboats, barges, fishing boats, carriers, and more. These coolers offer versatile temperature control for various systems such as main and auxiliary engines, bow thrusters, air conditioning, and hydraulics. With customizable size, shape, and configuration options, WEKA’s box coolers efficiently dissipate waste heat from diesel engines and other sources like charge air, lube oil, and gear oil coolers. Backed by years of innovation and engineering excellence, WEKA continuously enhances the design and thermal performance of its box coolers to meet the rigorous demands of the maritime industry.
Marine Applications
Design Specifications
Design Pressure: 3.33 bar g
Test Pressure: 5.00 bar g
Design Temperature: 94.9 °C
Key Benefits
Less susceptible to corrosion and fouling
Can operate in icy conditions or silt
Low maintenance
Space-saving in the machine room
Low operational costs
Selection of Materials
Bonnet: Carbon Steel – Color coated
Tubesheet: Naval Brass
Support plate: Teflon
Tubes: Cu/Ni 90/10
Coating: N.a.
Bolts: Carbon Steel Galvanised
Gaskets: Rubber compound
Isolation Bushings: Yes
Additional equipment required: WEKA Guard & Protector
Natural Anti-Fouling/Amazing results after a 6 week feasibility study
This image compares traditional aluminum brass tubes with hard-baked coating (left) and uncoated 90/10 copper-nickel tubes (right) after a six-week feasibility test. The 90/10 Cu-Ni alloy, with its high copper content, demonstrates superior natural anti-fouling capabilities, effectively resisting biofouling from algae, mussels, and other marine growth. Unlike the aluminum brass tubes, the copper-nickel tubes resist marine growth due to the copper in their protective oxide film, not from copper ion leaching. This highlights the advantages of using copper-nickel alloys for marine applications.
