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Evaporative Cooling

Carel OptiMist
OptiMist is an evaporative cooler and humidifier that atomises water in fine droplets which, while spontaneously evaporating, remove heat from the humidified and cooled air. It uses a vane pump to pressurise the water, subsequently atomising it through special nozzles.
optiMist is a complete system that includes evaporative cooling and humidifying in a single solution which can be used to treat the air in an AHU (air handling unit) to both humidify the output air (direct
evaporative cooling) and to indirectly cool the renewal air, for example with a crossflow recovery unit, in order to increase the energy efficiency of the AHU.

ChillBooster is a simple atomizer that sprays water in small drops, whose outer diameter is approx. 35 μm1. chillBooster is shown to support the heat rejection of a dry cooler by exploiting the cooling eff ect of evaporating water (evaporative cooling).
Drops are usually sprayed against the air flow so that they partially evaporate before depositing on coils. Then, most of the deposited water evaporates from the coils, greatly enhancing the rejection of heat from the chiller; the part of the water that does not evaporate, drips, bringing away some more heat.

The rapid development of evaporative cooling in HVAC applications is certainly due to its extremely low energy impact. If we compare the energy cost for Evaporative Cooling with that of other typical air transformation methods (for example air cooling using chillers), we note that the energy savings is significant.
Adiabatic cooling is also much more efficient energy-wise when compared to steam emission. The only energy required is the pressurisation of the air, which is sent to the atomising nozzles by a pump.
Consumption is about 4...8 W for every l/h of nebulised water.

Talk to our HVAC Team about Energy Efficient Adiabatic Cooling options.



For over 40 years CAREL has been designing and manufacturing electronic controllers and remote ma...

For over 40 years CAREL has been designing and manufacturing electronic controllers and remote management systems for air-conditioning and refrigeration applications. The quality and innovation of its products has made CAREL one of the established leaders in the industry worldwide. Carel has been specializing in the field of humidification for over 30years, and offers humidification solutions for almost any application using a variety of humidification technologies ranging from electrode boiler & resistance element humidifiers to live steam systems; and compressed air/water and high pressure water atomising systems for high capacity applications to small freestanding centrifugal atomisers. CAREL's main customers are manufacturers (OEM) and installers, serviced by a network of branches and distributors present in many different countries around the world. CAREL Retail Solutions is the latest proposal for the optimised control of air-conditioning and refrigeration units in large retail structures. CAREL Retail Solutions allows the use of advanced supervision and remote management systems, with effective savings in system maintenance costs. This means reductions in running costs and simplified management of hygiene (HACCP) procedures.

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