Galvanized Steel

The advantages of the elliptical finned tube are:

• Low air-side pressure loss
• Compact construction
• Excellent corrosion protection due to hot-dip galvanized coating
• Long service life
• Durable bond between the fin and core tube
• Easy to clean thanks to robust, hot-dip galvanized steel fins
• Gasketless and thus environmentally compatible construction

The key component of the galvanized steel version is the high-performance finned tube. Rectangular steel fins are pushed on to the elliptical steel tube. As the finned tubes are hot-dip galvanized, good metallic contact is ensured between the core tube and the wide fin collar. The fins will not come off under thermal or mechanical stress. Thus perfect heat transfer is ensured even after many years for service.

The finned tubes are welded into the tubesheet using two weld passes, which ensures high mechanical strength as well as a durable bond that stays oil-tight for years. The elliptical core tube has the advantage of an aerodynamically efficient profile. This allows high cooling efficiency to be achieved, while keeping the pressure drop at a minimum. Small pressure drops bring down fan operating costs, as the drive motor power consumption is lower. Moreover, low-noise fans can be used. The robust construction of the galvanized finned tube offers also significant advantages when it comes to cooler cleaning. The rectangular steel fins with their relatively low height provide essentially higher mechanical strength compared to coolers with aluminum fins.

Cooling capacities range from 100 to 2,500 kW in non-sound-insulated and sound-insulated designs. Depending on our customers’ noise control specifications, sound insulating elements are provided on the suction and/or discharge side.