Description

Adiabatic Air-Cooled Heat Exchanger

Guntner ACS air-cooled heat exchanger or condensers with hydroBLU™ Technology can be operated either wet or dry.  Both modes can provide excellent air-cooled heat exchanger or condenser performance with a small footprint and low operating costs. The cooling limit, i.e. the theoretically best possible return temperature condensing pressure for the ACS is tied to the wet bulb temperature of the ambient air at the air-cooled heat exchanger or condenser.  Our experts will configure the ACS specifically for your application and optimize it for its intended operation in your system. This is the only way of ideally dimensioning the air-cooled heat exchanger or condensers and minimizing the operating costs of the complete system. Benefit from our experience!

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Applications:

Refrigeration:

  • CO2, NH3, HFCs coolers/condensers

HVAC:

  • Water source heat pumps
  • Variable Refrigerants flow
  • Chillers – water and remote condensing
  • Geothermal Heat Pumps
  • Free cooling for Data Centers

Power & Process cooling

 

  • Plastics Industry
  • Compressors
  • General Process

The ACS V-SHAPE cooler:

The new V-SHAPE units heat exchanger is specifically designed for the fluid HFC, NH3, CO2 or water/glycol mixture. The core tube diameters and materials, in combination with the fin geometries, provide the best possible combination of maximum capacity and minimum tube volume. Operated with the optional adiabatic HydroPad pre-cooling system and the wide range of accessories, the V-SHAPE leaves nothing to be desired in its performance category!


Technical equipment of the V-SHAPE cooler:

 

The ACS V-SHAPE coolers are equipped with retractable crane lugs and allow for particularly easy installation and quick mounting. The solid units with their compact casings made of powder-coated, galvanized steel are extensively tested for stability; for instance, Guntner coolers and condensers are subjected to lifting tests to assess the torsional stiffness and to load tests to determine the snow load and the resistance of structures to earthquakes. The capacity ranges from 5 tons up to 600 tons depending on the application; The heat exchangers optimized for CO2 this refrigerant are designed for an operating pressure of up to 120 bar as a standard!

Intelligent control of fan speed and wetting

  • Water conserved by volume control
  • Very low energy consumption using Electronically
  • Commutated (EC) fans
  • Very low water consumption because dry/wet
  • switchover is set at a high level

Optimal adiabatic cooling delivery System

  • Maximum adiabatic efficiency
  • Plume-free
  • No water circulation
  • No aerosol output
  • Automatic draining
  • Dry cooling coil
  • No spraying
  • No water treatment required on typical Systems

Multifunctional use of humidification pads

  • Easily removed for dry operation
  • Reliable adiabatic delivery system
  • Protects coil from dirt and debris

Integrated, intelligent control

  • Wired ready to use
  • EC fans with the Guntner Motor Management (GMM)
  • fan speed controller
  • GMM step controller for fan cycling

Dry Operation

  • With no wetting of the unit, it operates like a
  • conventional finned dry cooler or condenser
  • Energy is dissipated to the ambient air via convection

Wet Operation

  • For high external temperatures and/or during higher cooling loads
  • The fluid can be brought down below the ambient dry bulb temperature, even without directly wetting the heat exchangers
  • Air is adiabatically cooled and then energy dissipated by convection


Increased efficiency and capacity resulting from the adiabatic HydroPad pre-cooling System

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  • The optional adiabatic HydroPad pre-cooling system offers substantial savings.
  • On the one hand, the wetting system can increase the capacity of the unit allowing you to operate smaller units with a reduced footprint without undermining the given capacity requirements.
  • And on the other hand, this option allows for operating all the refrigerating plants more efficiently, thereby saving money.

Adiabatic Dry Coolers

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At peak ambient temperatures, the air entering the finned heat exchanger is pre-cooled by wetted cooling pads to a temperature approaching the wet bulb temperature, without aerosol formation and without applying water to the finned surface. The pre-cooling process maintains the required leaving fluid temperatures or condensing temperatures at peak ambient conditions. The adiabatic process significantly increases the thermal efficiency of the cooler or condenser with minimal water usage.

The increased thermal performance at peak ambient conditions lowers the total cost of ownership. The reduction in compressor energy usage permits higher COP’s, with a significantly reduced footprint.


Cooling towers or evaporative condensers use water as the evaporative cooling source throughout the year. The adiabatic alternative only uses water at peak ambient conditions thereby significantly reducing water usage, water treatment, chemicals, sewage and the costs associated with each.

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