AT Cooling Towers

Crafted from decades of engineering know-how, the Advanced Technology (AT) cooling towers series from EVAPCO features state-of-the-art induced draft, counterflow technology to deliver superior operating advantages in any climate.  From performance to maintenance, they simply work smarter.

• Available in a huge range of models and box sizes unparalleled in the industry
• Ranging in capacity from 33 to 5,141 nominal tons
• IBC Compliant – Independently certified by the International Building Code to withstand seismic and wind load forces in North America
• Independently certified by the Cooling Technology Institute
• Available with FM Approved construction
• OSHPD Pre-Approval available
• 7’ wide single and multi-cell box sizes available for containerized, export shipments

Principle of Operation

Warm water from the heat source is pumped to the water distribution system at the top of the tower. The water is distributed over the wet deck fill by means of large orifice EvapJet™ nozzles.

Simultaneously, air is drawn in through the air inlet louvers at the base of the tower and travels upward through the wet deck fill opposite the water flow. A small portion of the water is evaporated which removes the heat from the remaining water. The warm moist air is drawn to the top of the cooling tower by the fan and discharged to the atmosphere. The cooled water drains to the basin at the bottom of the tower and is returned to the heat source. The vertical air discharge of the AT design and the distance between the discharge air and fresh air intakes reduces the chance of air recirculation, since the warm humid air is directed up and away from the unit.

Product Features

EVAPAK® Fill

• Constructed of inert polyvinyl chloride (PVC)
• Resistant to rot or decay
• Capable of water temperatures up to 130ºF
• Usable as an internal working platform
• Flame spread rating less than 25 per ASTM E84

High-Efficiency Drift Eliminators

• Limits the drift rate to less than 0.001% of the recirculating water rate
• Reduces water loss during wet operation
• Constructed of an inert polyvinyl chloride (PVC)

Superior Air Inlet Louver and Screen Design

• Constructed of an inert polyvinyl chloride (PVC)
• Water and Sight Tight (WST) design that minimizes splash-out and the potential for algae formation inside the tower
• Framed in steel in easily removable sections

Pressurized Water Distribution System

• Utilizes EVAPCO’s patented EvapJet™ nozzle for even water distribution
• Constructed of schedule 40 polyvinyl chloride (PVC) pipe and ABS plastic nozzles
• The piping is easily removable for cleaning
• The nozzles are large orifice and have no moving parts, making them practically impossible to clog

Equipment Upgrades

Stainless Steel Cold Water Basin

• Available in Type 304 or Type 316 Stainless Steel
• Includes the entire basin area including the support structure, vertical columns, louver frames, and the plenum
• Welded basin seams for leak-free operation

Stainless Steel Casing & Fan Section

• Available in Type 304 or Type 316 Stainless Steel
• Includes the entire upper section, including mechanical equipment support, fan cowl, and fan guard

Sound Reducing Options

Available with multiple equipment options to reduce the overall sound generated from the side or top of the unit. Option include:

• Super Low Sound Fan
• Low Sound Fan
• Water Silencers
• Discharge Attenuation
• Offset Sound Attenuation Walls

Water Treatment Systems

Available with water treatment systems, providing environmentally sensitive alternatives for treating water in evaporative cooled equipment.

• SmartShield solid chemical water treatment system
• Pulse-Pure CHEMICAL-FREE water treatment system

Maintenance Accessories

The AT product line is available with multiple equipment options to aid in the maintenance of the cooling tower. These options include:

• External Service Platform
• Basin Level Platform
• Sloped Ladder
• Hinged Louver Access Door
• Motor Davit