AlfaBlue Ammonia - Air cooled condensers – BNM, BND - Alfa Laval - #1

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Air cooled condensers – BNM, BND AlfaBlue Ammonia Application The Alfa Laval condenser with stainless steel tubes are especially designed for refrigeration plants where ammonia refrigerant is used. The condensers are designed for outdoor operation. Heat exchanger Innovative heat exchanger gives excellent heat transfer performance, thanks to the new fins pattern and surface corrugation, developed by Alfa Laval, combined with smooth stainless steel tubes. A well proven automatic TIG welding technology is used for the connection tubes. Heat transfer sections are floating mounted protecting perfectly the heat exchanger tubes during transportation and compensate the stress caused by the thermal expansion. In the BND, double connection provides opportunity for two completely independent heat exchangers. Each heat exchanger undergoes a pressure and leaking test with dry air at 28 bar. Fan motor On the BNM, four different fan diameters are available: 630, 800, 910, 1000 mm; on the BND, 800, 910, 1000 mm with three-phase motor 400V-50 Hz. The motors are with external rotor, protection class IP 54 according to DIN 40050. Integrated thermal protection by thermo contacts provides reliable protection against thermal overload. These axial condensers BNM and BND are available in five noise levels fan motor, (S) standard, (L) low, (Q) quiet, (R) residential and the new (T) high performance fan. Frame and casework The BNM and BND are manufactured with innovative AlfaBlue design profile that provides sturdy construction, higher rigidity with less weight, safe transport. The standard execution has a high corrosion resistance the casework is made with galvanised steel sheets painted RAL 9002 (corrosion resistance C4). Support manufactured in galvanised steel, with optimised length to permit uniform air suction in the coil. Smooth stainless steel tubes