|Company: Vestas Aircoil|
Product: Vestas aircoil coolers
Material selection and production description of Vestas aircoil coolers
Vestas aircoil A/S manufacture charge air coolers, for a wide range of two and four stroke diesel engines. The material selection for the individual coolers, are based on the customers requirements and Vestas aircoil experience. Listed below are examples of material for the individual components as well as production methods for a Vestas aircoil charge air cooler.
1. Tube bundle:
The tube bundle is made of tubes and fins. The tubes can be made of either: Aluminium-Brass, CuNiFe10, or CuNiFe30. The most common material is used by Vestas aircoil is CuNiFe10, as it combines high resistance to flow erosion with good heat transfer. In very special cases, titanium tubes are available. All fins are made from pure Cu.
2. Tube plates
The material for the tube plates varies with the type of coolant used. If the cooler runs with seawater, or other types of aggressive coolants, Rolled Naval Brass is recommended. If the coolant is fresh water, the tube plates can also be made from electro galvanized steel or un-treated steel, all to customer specification.
3. Water boxes
Water boxes for “OEM” coolers are normally made from cast iron. All depending on the inside working pressure, the most often used is GG25. When working with proto types, the water boxes are most commonly welded from carbon steel. In the aftermarket, stainless steel 316L is used where no “pattern” exists for casting of water boxes. It also possible to use customers own water box design where appropriate.
4. Side plates / covers
The side plates can be designed as either pressurized or un-pressurized. All depending on the application, the side plate is welded or cast. When cast, the quality is always GGG40 or above. Fabricated carbon steel is common for most “insert” type air coolers.
Tin Coating of air coolers
Vestas aircoil A/S manufacture charge air coolers for a wide range of two and four stroke diesel engines The material selection engines. for the individual coolers is based on the customers requirements and Vestas aircoil experience.
Vestas aircoil are capable of producing the tube bundle in two different ways: “Tin soldered” and “Expanded”.
The main difference is the connection between the fins and tubes.
In the “Tin Coated” version, the complete element is immersed into a bath of tin, which then makes a secure bond between the tubes and fins. This solution has been used since production of the first charge air cooler manufactured by Vestas aircoil in 1956. It is the more costly solution, but one which provides a slightly higher efficiency and corrosion resistance and a more rigid construction. It will last longer than any other construction method available today.We believe the
process is unique to Vestas aircoil.
BEWARE OF COOLERS WHERE ONLY THE FINS ARE COATED – THERE IS NO POINT IN THE PROCESS IF THE TUBE TO FIN JOINT REMAINS UN COATED!!
From Vestas aircoil A/S
|OEM replacements and spares for all engine types
• Direct replacements
• New thermal designs
• Fast deliveries
• Approvals from engine makers
|Dry cooling systems Custom built to meet the needs of your power plant
• Guaranteed performance
• Complete bespoke design of new units
• Replacement coils/ radiators
• Re-use of existing fans where possible
• Sandwich coolers LT- & HT coolers
• Material upgrades
|Engine exhaust silencers
• New design
• Standard sizes available
|Cooling towers Natures own method!
• New custom designs
• Servicing to your existing tower
• “Plug ‘n play” ready to use
• Low water consumption
• Low noise solutions
• Built in reservoir where appropriate
|Alternator winding coolers “Leak detector” coolers
• Double wall tube design
• Any makers unit can be re-tubed
• Custom manufactured for compatibility with existing
• Complete units
• Spare parts
• Replacement plates
• Plate repairs