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Dry Coolers & Condensers

CO2 Gas Coolers - Adiabatic V-Bank


The Colmac Coil Adiabatic V-Bank seamlessly integrates dry and wet operation to deliver an energy-efficient and water-saving solution. This innovative technology includes a water recirculation system, advanced controls package, and adiabatic pads, enabling adaptive operation in response to outside environmental conditions. The adiabatic system is offered as an optional feature for Colmac Coil Fluid Coolers, Air-Cooled Condensers, and CO2 Gas Coolers, providing enhanced performance across various applications.

  • Increased energy and water savings through Colmac recirculated water system design
  • No water treatment
  • Reduced maintenance
  • Energy efficient EC fan motor technology
  • Large capacity configurations available
  • Designed to fit your footprint
  • Compatible with all refrigerants
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Adiabatic V Bank Ec Fans Cutout
V Bank Adiabatic
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How does adiabatic cooling work in industrial refrigeration systems? 

Adiabatic cooling in industrial refrigeration systems improves cooling efficiency by lowering the temperature of the air entering the heat exchanger coils. Wet media pads positioned before or around the heat exchanger coils cool the air by evaporating water from the pads. This temperature differential facilitates more effective heat transfer, which is essential for maintaining lower temperatures and achieving the desired cooling effect in various industrial applications, such as cold storage, food processing, and more.

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Recirculated Water System

Exclusive Colmac design for water savings and energy efficiency, eliminating the need for water treatment. The Colmac Recirculated Water System provides superior efficiency compared to a once-through water distribution system that’s commonly used in other adiabatic cooling systems.

Adiabatic Pad System

Adiabatic Cooling Pads are wetted as air enters through the unit from the pull of the fans, resulting in higher cooling performance.

  • High quality, high cooling effectiveness adiabatic pads
  • Two adiabatic pad designs for either lowest water usage or lowest first cost
  • Designed for easy servicing and replacement

Factory Wired Adiabatic Controls

  • Complete unit controller for fan speed and water on/off functionality to maintain a specified leaving fluid/gas temperature.
  • UL508 certification

EC Fan Motor Technology

The Colmac Coil Adiabatic Cooler uses EC fan motors as standard. EC fans are a complete fan/motor assembly which includes a highly engineered fan and bell mouth matched to an Electronically Commutated (EC) motor. EC fan motors provide several inherent advantages over traditional AC fans.  

  • Built in variable fan speed control: Offers operational sequences and fan speed regulation in response to real-time heat loads and ambient environmental conditions, increasing energy efficiency.
  • Compliance with energy regulations: Many regions and industries have regulations that encourage or require the use of energy-efficient equipment. EC motors often meet or exceed these requirements, ensuring compliance.
  • Quiet Operation: EC fan motors operate with reduced noise levels, making them ideal for applications where noise control is important, such as in offices, residences, and commercial spaces.
  • Extended Lifespan: Due to their efficient operation and reduced wear and tear, EC motors typically have a longer lifespan compared to traditional AC motors, leading to lower maintenance and replacement costs.

Industrial Heat Exchanger Construction

  • Stainless steel tubes standard: 304 or 316 stainless steel, tube thickness options to optimize heat transfer efficiency for the application.
  • Fin thickness: .008 in and .014 in
  • Fin material options: 304 stainless steel, aluminum, epoxy coated aluminum, cupronickel
  • Industrial casing: G-235 Galvanized Steel, Optional 304 or 316 Stainless Steel

Adiabatic Cooler Unit Size

  • Fan rows: 1-2
  • Fans per row: 1-8

Seamless Rigging and Installation

  • Fully assembled from the factory, ready for installation
  • Ships in one piece
  • Forklift pockets for units up to 13,000 lbs
  • Internal walkway
  • Large inspection panel

Dryware Selection Software

Colmac Coil's parametric Dryware Selection Software streamlines the customization of dry coolers, condensers, and gas coolers. Accessible online via a user-friendly browser interface, this tool offers a comprehensive selection of working fluids, materials, and configurations. Dryware calculates thermal performance, provides pricing, generates dimensional drawings and complete unit specifications. Learn more and request access.

  • Weather Hood
  • Header End Cover
  • Return Bend Cover
  • Shrink Wrap
  • ASME “U” Stamp


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