Axial evaporative towers (TAA) are the best known machines, using axial fans on top of the machine. Our customers choose W-tech axial evaporative towers for their low power consumption and small installation space.
THE EVAPORATIVE TOWERS
These are machines used in industrial process cooling. Wherever there is a need to cool a large volume of water, W-tech evaporative towers are your best solution for:
Energy production and cogeneration systems
Food and concentration plants
Industrial systems in general/air conditioning and refrigeration
PRODUCT DATA SHEET
TAA-type machines, open-circuit evaporative towers with axial fans, are built and assembled in accordance with our ISO 9001-certified quality system.
All our machines as standard are built in Magnelis, an eco-sustainable alloy made up of 93.5% zinc, 3.5% aluminum and 3% magnesium. The percentage of magnesium allows the self-repair process during cutting and punching operations and protect against deformations. Another characteristic of this material is resistance to corrosion, superior even in environments rich in chloride and ammonia. The maximum workability and greater resistance, compared to other processes, allows the use of a smaller amount of metal coating and therefore a greater lightness of the machines.
STRUCTURE & ASSEMBLY
Standard unit is built with alloy steel Magnelis® ZM310 (steel, zinc, aluminum, magnesium) panels to grant the maximum level of surface protection. Comparable empirically to a galvanized sheet with over 1000 g/m2 of zinc. The single panels, after the phase of cutting and folding, are assembled with AISI 304 (A2-70) on request AISI 316 (A4-80) e guarnizione in butyl mastic highly adhesive reinforced with polyester mesh inside to guarantee great shape stability and resistance to temperature variations. During the assembling of the structure, welding operations are not foreseen (self-supporting). Magnelis® sheet metal color is RAL 9006.
AIR INTAKE GRILLES
Louvers are in PVC with special dual flow design in order to eliminate the sun light into the water basin, possible residue/leafage or accidental water leakage. Positioned on the four sides of the unit, louvers can be completely removed to allow an easy access to the basin during maintenance.
WATER COLLECTION BASIN
Basin section is made with heavy thick panels of Magnelis® ZM310 thick and is equipped with a removable anti-cavitation type filter AISI 304L (to protect the primary circuit pump) and water make-up valve with brass/stainless steel body and stainless steel or polypropylene floating ball. Basin configuration permits water volume reduction and a lower weight when operating. Basin surface is sloping to permit complete drainage, emptying during maintenance and preventing then the growth of bacteria. All the unit connections are in galvanized steel (AISI 304L on request).
The fill or exchange pack is made of PVC(PP upon request) with proprietary geometry design. The filling standard is type W1300 and on request, depending on the characteristics of the water to be used it can be type W2000 or for particularly dirty water filling W2700 is available. The geometry used is such that the heat exchange surfaces between air and water are maximized.
WATER DISTRIBUTION SYSTEM
Water is uniformly distributed on the coil by pipes made in PVC and distribution system made in Magnelis®. Spray nozzles are of suitable diameter to prevent any clogging and are made in ABS and easily replaceable in case of maintenance.
(MOTORS + FANS)
The axial fans are made with high efficiency glass fiber reinforced polypropylene (PPG) blades, aluminum hub, galvanized steel bush and bolts. The fan protection net is made of galvanized steel. The motors, efficiency class IE3, with tropicalised IP56 mechanical protection, specifically designed for operation in a humid atmosphere, insulation class F, continuous service S1, shape V6 and automatic condensate drain, are keyed directly to the axial fans (direct coupling).
The electric motors undergo a class C5 painting cycle to guarantee maximum protection against corrosion and humidity. The motors are suitable for being coupled to frequency variators (VSD-Inverters) 30-50Hz.
The engines comply with CE 2019/1781 regulation.
The connection cable coming out directly from the electric motor casing is taken outside the structure and wired directly to the terminals in a special IP56 junction box.
Drift eliminators are made in PVC (PP on request) and divided in various sections to facilitate their removal in case of replacement or inspection of ventilation and water distribution system. The used drift eliminators allow a passage of drops equal to 0.001% of the droplets present at the entrance, removing water loss, potential aerosols drift that might contain Legionella bacteria.
All components are supplied assembled. Every unit, first
of delivery, is subjected to hydraulic testing, waves
make sure there are no water leaks in the tub, ed
electrical to verify that the electric motors have a
absorption in line with the plate data.
CATALOGS AND TECHNICAL DATA