Evaporative cooling is the addition of water vapour into the air, which causes a decrease in the temperature of the air. The energy needed to evaporate the water is taken from the air in the form of sensible heat, which affects the temperature of the air, and converted into latent heat, the energy present in the water vapour component of the air, whilst the air remains at a constant enthalpy value. This conversion of sensible heat to latent heat is known as an adiabatic process because it occurs at a constant enthalpy value.
Evaporative cooling process causes a drop in the temperature of air proportional to the sensible heat drop and an increase in humidity proportional to the latent heat gain.
A simple example of natural evaporative cooling is perspiration, or sweat, secreted by the body, evaporation of which cools the body.
Increase in business efficiency:
Human productivity falls by 4% for every degree over 22°C. FES units (Evaporative cooling units) increase human productivity with a high volume of cold air.
Quick installation, a direct blow or air distribution with air duct.
No compressor, no cooling gas, no complicated parts.
Cooling pads are original Munters CELdec, with very high efficiency and long life.
The capital cost is 80% less than the conventional industrial air conditioning systems.
High Indoor Air Quality:
100% fresh air, natural filtration.
No refrigerant, no contaminant, low energy consumption.
Stainless steel or plastic casing.
In adiabatic cooling pad systems, cool pads are placed in special sheet metal assemblies which are mounted in front of the fin block. With the aid of the pump, water wets the pads from the upper part of the Evaporative Cooling Pad system. The outside air, which is dry and hot, is pre-cooled by passing it through wet cooling pads. The temperature of the air that contact with the wet cooling pads is approximated to the wet thermometer temperature. The water does not contact directly with the fins. Thus fin’s lifetime is longer than the direct spraying systems. Also, pads prevent contamination of fins.
Since the microorganisms, minerals and similar parts do not mix into the air during the evaporation phase of water, the working principle is completely healthy. The system ensures that production efficiency can be increased with minimum water consumption.
The condenser’s air inlet decreases the system’s working pressure, which creates increased cooling capacity and decreased energy usage.
The savings are illustrated on the table above for Air cooled condensers with and without FESChill unit. As a result of 11°C decrease in inlet air, the energy consumed by the Chiller is decreased by 19% and the cooling capacity is increased by 11%. This allows the EER or COP of the chiller to increase by 36%. On average every 1.8°C decrease of air inlet temperature achieved by the pre-cooling pads, increases the condenser effectiveness by 2 %.
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