Indirect Evaporative Cooling Systems Adiabatic (50-250 kW)

Adiabatic (evaporative) cooling provides energy-efficient cooling by making use of the natural change in temperature that occurs during the process of evaporation.

In a simple, direct diabatic system, a fan blows warm air against water-soaked pads. Some of the energy of the warmth in the air is imparted on the water. This evaporates the water in the pads, and lowers the temperature of the air.

Direct diabatic systems can be very efficient – however, they also add humidity to the air, which isn’t acceptable in data center and telecom environments. Too much moisture can corrode sensitive components, and even cause short circuits.

Indirect adiabatic cooling is a means of gaining the efficiencies of evaporative cooling without adding moisture to the air. A large percentage of the cost of operating a data center goes towards cooling and conditioning the air around these sensitive components, and the efficiencies gained by use of environmentally friendly evaporative cooling can lower those costs dramatically.

An indirect adiabatic cooler draws in and humidifies outside air to lower its temperature. The air is taken to a heat exchanger, and immediately exhausted. Indoor air – which never mixes with the outdoor air – is also brought to the heat exchanger, where the temperature of the indoor air is lowered without changing its humidity.


Canovate Electronics has engineered an indirect adiabatic cooler that achieves an Energy Efficiency Ratio of more than 30 (EER>30) and a Power Usage Effectiveness of less than 1.05. To achieve these phenomenal, environmentally friendly, energy- and cost-saving rates, our coolers include features such as:

–  A hydrophilic coated heat exchanger

–  Water-saving modes and features, as well as a tank system

–  Water discharge and hardness measurement features

–  Smart fans that work according to the current needs of the data center

–  With a frost-protection feature, our indirect adiabatic cooler is designed to work without problems in temperatures as low as -25?°C (-13°F).

–  Our systems are engineered to be technician and installation friendly. They feature one-piece assembly, with no screws on the device covers for easy service and maintenance.


Canovate IAC series Indirect Adiabatic Cooling Systems reduce energy consumption, eliminate high ambient problems and serve as an energy efficient cooling solution for Data Centers.

–  Reduced Running Cost

–  Reduced Maintenance

–  Improved Reliability

–  Increased Capacity

–  Self Cleaning Filter

–  Longer Compressor Life


–  BMS compatibility

–  Supply air temperature control

–  Air flow and pressure monitoring

–  Dual power supply (ATS)

How does Indirect Adiabatic Cooling work?

–  Two 100% separated air streams. Outside air and datacenter air.

–  Only max. 50% of outside air to cool 100% datacenter air.

–  Forced evaporation of the water on the surface of the plates.


–  COST EFFECTIVE:  Minimal maintenance requirements, minimal power infrastructure

–  RELIABLE: By a minimum of moving parts, high quality components and high quality finish

–  ENERGY-EFFICIENT: Due to EC fans, dynamic control and elimination of a water pump

–  ENVIRONMENTALLY FRIENDLY: Only water and air as cooling agent and low energy consumption, low CO2 emission

–  HYGIENIC: No still standing water, no algea, no legionella risk

–  SAVINGS: Up to 90% energy saving on conventional cooling system

–  EXPERIENCE: More than 15 year of experience in indirect evaporation cooling

Canovate IAC® Series Benefits:

–  Highest water efficiency

–  Maximum economizer utilization

–  Compact size

–  Reduced Running Cost

–  Reduced Maintenance

–  Improved Reliability

–  Increased Capacity

–  Self Cleaning Filter

*  Longer Compressor Life

–  Wall or roof optimised connections

–  Ultra-energy efficient unit pPUE below 1.2

–  Adiabatic system with full UV sterilisation

–  N+1 fan configuration for increased efficiency

–  Flexible configuration (50,100, 200, and 400 kW standard unit sizes)

–  High mechanical cooling energy efficiency ratio (EER)

This Next Generation -IAC® Unit has three operating modes, all designed to reduce operating costs year-round:

1- Free cooling (Dry) Mode (from approx. -25°C until approx. 8°C):  The cold season, ambient (scavenger) air is capable of cooling the data center air without assistance from the evaporative system. In this operational mode the outside air is able to provide full cooling capacity to the white space. By ramping up the outdoor fan, the system will be able providing an increase in cooling capacity. Even when the ambient temperature is moderately warm to cold, ambient air can be used exclusively to cool the data center air. Dry Mode can most likely be used every night, even in the middle of summer.

2- Adiabatic cooling (Wet) mode (from approx. 9°C until approx. 35°C): During the warm season the evaporative system is utilized. With these outside conditions additional cooling is added by using water evaporation for adiabatic cooling. This adiabatic cooling will reduce the temperature to approx. the wet bulb temperature condition.

3- Adiabatic cooling mode in combination with DX cooling (from approx. 30°C until 45°C):  When ambient temperature and humidity are both high, reducing the effectiveness of evaporative cooling in case the adiabatic cooling is not able to provide sufficient cooling, the Direct Expansion (DX) or Chilled Water (CW) systems are used to supplement the cooling, a full back up DX system will provide the peak cooling Options for DX and CW trim cooling or 100% back-up cooling is possible.

The high sensible effectiveness of the heat exchanger used in this CANIAC® unit results in less hours of water evaporation and a substantial reduction in overall water consumption. As a result of less water usage, operating cost savings come from extended wetted media life and reduced water system maintenance requirements.

Achieve up to 75% in Energy Savings! air through a heat exhanger. With ideal environmental conditions, the CAN IAC achieves the maximum savings, and a PUE ratio of 1.03.



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