Evaporative
air cooling is a method of converting
hot air into a cool breeze using the process of evaporating
water. It is similar to the cool refreshing effect you
feel when you immediately step out of a pool.
Evaporative
Cooling Machines utilize the natural process of water
evaporation along with an air-moving system to create
effective cooling. Outside Ambient air is pulled through
filters and it passes through the Cellulose Pads then
it cool the air through water evaporation. A blower
impeller circulates the cooled air throughout a department,
Industrial Shed, Hall etc. by a suitable Ducting System.
It
is a adiabatic process and works on the principal of
heat conversion (sensible to latent.) Evaporative air
cooling removes no BTU's from the air as with mechanical
refrigeration, it simply converts the heat in the air
stream into a form we cannot feel. Heat from the Incoming
air passing through a wet media is used to evaporate
the water lowering the "dry bulb" temperature.
Evaporatively cooled air will follow the same line as
the "wet bulb" on the psychrometric chart.
The "dry bulb" temperature is measured by
a standard thermometer. "Wet bulb" is the
temperature reached using a wet wick thermometer at
the same time the "dry bulb" is measured.
The psychrometric chart also includes other useful information
such as relative humidity and dew point levels.
The
performance of Evaporative System deteriorates as the
humidity level increases in atmosphere. Consequently,
Evaporative Systems are not suitable for the humid and
coastal regions. These systems are generally suitable
for dry areas. The effectiveness of this system will
be reduced during rainy seasons. At this time you can
use this system as a Fresh Air Ventilation system. |
EVAPORATIVE AIR COOLING SYSTEM
