SIERRA’S eFACiLiTY® Green Office Building
Coimbatore, Tamil Nadu
The Variable Refrigerant Flow system of exceptional Energy Efficiency Ratio (EER) of 13.85 has been selected for space conditioning. The facility boasts that the VRF system installed is 55% more energy-efficient than others and provides precise temperature control within the building.
Sensors installed across the building help to intelligently maintain temperature and fresh air supply. Zonal bi-directional heat recovery ventilation system forces stale air out and brings fresh air in. It harnesses the concept of heat transfer between hot fresh air and cold exhaust air to lessen load and cost of air conditioning.
Indoor Air Quality
Triple filtering ensures only the purest air enters workspaces. Demand Controlled Ventilation aided by CO2 sensors continually monitors CO2 levels and pumps fresh air zone-wise, when needed. Real-time IoT sensors monitor levels of volatile organic compounds, humidity, and particulate matter 2.5 & 10. 45% enhanced supply of fresh air and indoor plants keep air fresh and add aesthetics.
Artificial Lighting and Controls
100% LED lights have been used leading to a 0.26 W per sq ft lighting power density. This is 80% better than ASHRAE-defined standards.
The regularly used lighting is 100% automated. Sensor-activated passage lights, occupancy sensors and lux sensors activate lights to turn on only when the ambient light is not good enough. Work areas receive permissible lighting based on pre-defined schedules. Additional luminosity is allowed only for defined intervals to lessen wastage and turn off when floor is empty. Individuals in cabins can control their preferred lux levels with eFACiLiTY® Smart Facility app. All these features ensure maximum energy efficiency with provision to calibrate individually based on occupant’s individual needs, thus helping in energy savings of 64%.
89% water savings are achieved using waterless urinals, high efficiency sensor faucets, reuse of treated water for flushing and reuse of stored rainwater for domestic use.
Waterless urinals operate on minimum auto-flushing based on occupancy levels of the building using BMS reducing the need for frequent cleaning and usage of cleaning materials.
Sequencing Batch Reactor (SBR) based STP System, Rainy-filter for rainwater filtration, Raw water treatment using pressure sand filter & carbon filter, Rainwater additional treatment using dual-media filters & UV treatment leading to high-quality water use improving efficiency. Even the VRF system is deliberately designed to be air-cooled, rather than water-cooled.
Power production and consumption, water consumption, occupancy, indoor air quality and temperature are monitored real-time. Continuous and comprehensive monitoring ensures that building performance is maintained at highest possible levels.