Indirect evaporative Cooler also works on principle of Evaporative air cooling but it uses an heat exchanger in primary stage. In contrast to direct evaporative cooling the water and ambient air flows in different channels .The water and hot air does not come in direct contact with each other and that is why it is called indirect evaporative cooler.
The indirect evaporative cooler cools the incming hot air sensibly. Its efficiency depends on difference between Dry bulb and wet bulb temperature. Better wet bulb depression ( DBT-WBT) and better cooling efficiency.
The air coming out of heat exchanger is dry ,as it does not get mixed with water. This dry cooled air can be best used for cooling Electric panel rooms, data centres and server rooms. it can be advantageously used in manufacturing industries where the product being manufactured is hygroscopic or susceptible to moist air .
Advantages of indirect Evaporative cooler:
- Better Cooling than Direct Evaporative Cooling
- 80% more Energy Efficient than air conditioner
- Consumes less water than Direct Evaporative Cooling
- Environmental friendly , CFC free cooling
- Dry Cooling – No free moisture partices added to incoming stream in IEC stage.
|Type||Blow through design|
|AHU box construction||25 mm thick double skin puff panels with extruded aluminium hollow profiles for structural support|
|Type of blower||Backward curve DIDW, dynamically balanced|
|Air flow machine outlet – in CFM/CMH||15000/25500|
|Make of motor||CG/Rotomotive|
|Blower motor specifications||IE2, TEFC 4P, Class F insulation, S1 continuous duty, IP55 protection|
|Type of drive||V-belt drive 2SPB|
|Make of sensible heat exchanger||HMX-DAMA|
|Material of adiabatic heat exchanger/make||Treated and impregnated special cellulose material of 100 mm thick, Eco cool/equivalent|
|Type/size of filters||Panel filter of 90% efficiency down to 10 microns/610 x 610 x 50|
|Number of filters||12|
|Recirculating pumps||2 submersible, 260 W single phase pumps|
|Air inlet louvers||Pre-punched louvers made of GI precoated sheets|
|Dimensions W x D x H (mm)||2150 x 3700 x (2225 + 150*)|
|Starter panel (outdoor type)||Body mounted starter panel with all ON/OFF/trip indications; it will work both in upto and manual mode|
|Remote control box||Remote box with 30 m cable length, with ON/OFF switch and indications for low water level, blower, and pump trip|
|Total power consumption in kW||9|
|Connected load in kW||10.5|