Evaporative Cooler

Evaporative cooling is the addition of water vapor into 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 vapor 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. Therefore, evaporative cooling 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. Evaporative cooling can be visualized using a psychrometric chart by finding the initial air condition and moving along a line of constant enthalpy toward a state of higher humidity. A simple example of natural evaporative cooling is perspiration, or sweat, secreted by the body, evaporation of which cools the body

Advantages

• Air cooled condenser does not get wet

• Air cooled condenser surface is kept clean, there is no scale formation

• The manufacturer warranty of condenser is not effected

• Optimum water usage

• System works continuously, does not work with on-off periods

• System does not generate temperature fluctuations

• The evaporation effectiveness is high ( up to 96% )

• Operates with minimum energy

• The system works with low pressure water

• Electric consumption is minimum (0.5 kw pump)

• No electrical and complicated devices other than small circulation pump

• Prevents pressure loss of condenser by keeping it clean

• Most economical efficiency increase methodology

• Easy to apply and problem free operation

• Simple and low cost automation system

• Very low maintenance cost

• Increases the life-time of the air cooled chiller