Higher performance. Reduced space requirement. New wider tubes and two new types of fin have been developed by Setrab AB, and are now being introduced onto the world market. This new type of cooler will offer considerable opportunities for manufacturers needing coolers for excavators, tractors, agricultural machinery and a large number of stationary applications within the processing, power supply, engineering and other industries.

Setrab AB has been working with coolers for vehicles and industrial applications for some 30 years - coolers for engines, hydraulic systems, transmissions, compressors and electronics. They can be found in sports and prestige cars such as Ferrari, Rolls-Royce and Lamborghini. Around 10% of production annually is also used in motor racing, including Formula 1 and NASCAR.
However, more than 50% of cooler production goes to the company's largest customers in the industrial sector - tractors, excavators, commercial and utility vehicles, etc. Setrab develops, manufactures and markets coolers in small and medium-sized volumes. Production systems with modularised components mean that specific performance and installation requirements can be satisfied quickly and cost effectively. According to the company, this is achieved without major modification and tooling costs, yet with very short quotation and delivery times.

New development: Wider tubes, more efficient fins
When it comes to coolers for industrial applications, Setrab maintains a standard range including nine different wide tube types and formats up to 80 tubes in height.
In 2002, two new developments are being introduced as regards cooling technology for industrial applications: wider tubes and a new type of fins.
The wider tubes are 66 millimetres wide, compared to the previous maximum width of 45 millimetres. The new fins are available in two versions: Louvered E-fins and square wave F-fins. E-fins are used in coolers for maximum output, while the F-fins are adapted for use in e.g. vehicles and machinery used in environments containing dust and debris.
Both fin types are available in several densities between 9 and 12 FPC (Fins Per Inch), which means that the coolers can be designed and manufactured according to requirements. The development of the new cooler components has been conducted in-house (the company has its own wind tunnel, for example) and in consultation with researchers in the thermodynamic faculty at Lund University.

An integrated tank/header design is being used for the new cooler to keep brazed joints to a minimum, to reduce the need for welding and to improve quality.

Better cooling - less space required
The increased efficiency - up to 27% higher in a given application, all other things being equal - means greater cooling capacity within an existing space envelope. Alternatively, the higher capacity of the cooling systems can be used to reduce dimensions and space requirements. This should mean greater flexibility for vehicle and machinery designers.
"Industrial coolers with wider tubes and more efficient fins can meet the increasingly high demands industry places on its coolers," says Fredrik Gustafsson, Head of Development at Setrab AB.
"They are designed and tested for a pressure of 16 bar with a million load reversals, which is considered the industry standard. The new type of cooler is distinguished from conventional models by the higher output or the reduced space requirement. Or a combination of the two, depending on the application.
"Just as with the earlier standard coolers, they can easily be adapted as regards physical dimensions, customised mounting and bracketry, horizontal or vertical installation, connections types and flow variations," says Fredrik Gustafsson.

In-house manufacture
The coolers are designed in a computer program based on lab tests and theoretical models. Simulation encompasses both normal operating conditions and extreme conditions in hot climates, at high altitude and with other variables that affect the cooling result.
Production is centred at the company's facilities in Malmö, Sweden. The company has long experience of brazing according to the CAB method (Controlled Atmosphere Bracing) in computer-controlled furnaces. To achieve a high degree of flexibility, the company operates several furnaces so as to be able to adapt the environment in the furnaces for each size of cooler. After they have been assembled, the coolers are treated with an epoxy coating to achieve a high finish and good resistance to corrosion.

Examples of manufacturers who use coolers from Setrab AB: Valmet (tractors), Wirtgen (asphalt machinery), Audi (private cars: engine, oil and power steering cooling), Vestas (wind power stations), HYDAC (hydraulic systems), Siemens (CAT scanners), Saab Dynamics (electronics).

Company facts:
The company has been operating on the global market for some 30 years. The parent company and production unit are based in Malmö, Sweden, with wholly-owned subsidiaries in the UK, Germany and the USA. Setrab is also represented via importers or agents in some 20 countries.

Caption:
The new COM66 cooler from Setrab exhibits two new developments: wider tubes and fins of a new type. Higher performance or reduced space requirement are specified as benefits compared with conventional coolers.


For further information, please contact:
Setrab AB
Fredrik Serger
Box 60016
SE-216 10 MALMÖ
Sweden
Tel.: +46 40 15 80 60
Fax: +46 40 15 52 87
e-mail: fredrik.serger@setrab.se
Internet: www.setrab.se