IDEC unit at an ICICI Bank office in Jaipur
Case Study
Indirect-Direct Evaporative Cooling Project at ICICI Bank office, Jaipur
An innovative project implemented for excellence in energy management
At ICICI Bank, efficient energy management and innovative conservation underpins our strategy of managing
the Bank’s environmental footprint. The implementation of indirect-direct evaporative cooling (or IDEC),
at our office in Jaipur is indicative of these efforts.
IDEC or the two-stage evaporative cooling
is among the most advanced and energy efficient cooling systems. In the first stage, warm, outside air
passes through a heat exchanger, that is cooled by evaporation technique on the outside. In the second
stage, the same air passes through a water-soaked pad, which allows additional cooling to take place. The
air also picks up some additional humidity
The commissioning of the IDEC system has led to power saving of upto 30% in summers and 65% in winters in the HVAC systems (heating, ventilation and air conditioning).
The benefits of IDEC system are:
- It reduces energy consumption.
- The humidity content and temperature of the resultant air can be maintained at lower than direct evaporative coolers. This makes the air more usable due to ambient temperatures as well as more humidity.
- It provides fresh air and maintains indoor air quality.
Additionally, the waste air from the IDEC is being used to reduce the ambient temperature of the chiller. A duct has been created from the IDEC to the chiller. Cool air at 16 degrees from the blowers is supplied to the chiller through the ducts. This innovative use has led to 34,800 cubic feet per minute (CFM) per hour of cool air being used to reduce the ambient temperature of the chiller. It has contributed to upto 50% saving on power consumption of the chiller.
The implementation of Indirect-Direct Evaporative Cooling (IDEC) at our office in Jaipur is indicative of these efforts. This initiative was awarded the ‘Innovative Project Award’ at the ‘21st CII National Award for Excellence in Energy Management 2020’ for the implementation of Indirect-Direct Evaporative Cooling (IDEC).
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