How does evaporative cooling work ?
Evaporative cooling is a very simple method of cooling air without using refrigerants. A direct air evaporative cooler, using wetted filter pads, cools air by bringing it into contact with water. Water evaporates into the air stream and cools it. The amount of cooling is dependent upon the temperature and relative humidity of the air.
In the UK the maximum theoretical air off temperature is 22°C. In practice the actual temperatures achieved when evaporative cooling data centres in UK conditions can approach 24°C on the very warmest days. This allows full compliance with ASHRAE temperature standards.
In an evap cooling unit water is brought into the cooler from the mains water supply and is pumped up to the top of the unit using a circulation pump. The water is then dispersed over the Celdek pads using a water distribution system which allows the water to flow continually over the pads. The pads become saturated, air is drawn through the pads and the water evaporates causing the air to cool.
The cool air is then ducted round the building to provide cooling by means of an energy efficient axial fan
When cooling data centres the performance of a Celsius EcoCooler is dependent upon the temperature of the air and its relative humidity. Higher temperatures give greater cooling. Low relative humidity gives greater cooling.
Why should you choose us for your evaporative cooling? Find out here.
Supply Air Temperature Achieved
When using evaporative air cooling in the UK during a typical hot period the ambient temperature approaches 30°C. This coincides with a Relative Humidity of under 50%. As the air passes over the pads it will typically cool down to about 22°C. There is less cooling in the night as the temperatures reduce and the humidity rises.
Evaporative Cooling data centres is extremely energy efficient due to the simple nature of the process when compared to using conventional air conditions.
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