The layout of TERI SAS building
A truly green campus, it puts into practice the very principles it teaches in its classrooms. An architectural delight, the campus has been planned to provide a setting that enhances learning, while simultaneously showcasing the concept of modern green buildings.
The green building has 10 classrooms, each having the capacity for 32 students, 3 lecture halls with the capacity for 60 people and an auditorium with the capacity for 80 to 100 people. The building also has 10 well-equipped laboratories to compliment cutting edge research at TERI SAS, along with a well stocked conference hall.
The campus is aesthetically designed with several features of passive solar design, energy-efficiency and water and waste management systems.
The planning and orientation of spaces and building blocks ensures glare-free daylight in all regularly occupied areas. All the liner blocks are oriented in East-West direction with shorter facades facing the sun. The form of the building self shades the glazing such that direct sunlight is blocked at critical times of the day. The exposed facades and walls on the east and west directions have limited glazing.
The shading devices are designed such that the windows are completely shaded during the summer, which also contributes to reduction in cooling energy demand of the building. Energy efficiency is further enhanced by insulation of the walls and roof; and use of high performance window glazing to minimize thermal gain.
The layout of TERI SAS Building
Solar rooftop system at TERI SAS
TERI SAS added yet another 'green' feature to its repertoire when a 48 kWp solar rooftop system was inaugurated on September 12, 2015 during the Deemed university's annual tech-fest REtopia. Dr Chandan Mitra, Member of Parliament, Editor and Managing Director of The Pioneer, inaugurated the system by energizing one of the invertors. The solar rooftop system has a separate 5 kWp R&D plant meant specifically for the hands-on training of the students. This state-of-the-art grid-connected system comprises polycrystalline PV modules and SMA invertors. It is expected to generate about 1.5 million units of electricity over 25 years, offsetting 15% of the grid electricity. It would also result in mitigating around 1400 MT of CO2 emissions.
The system has been set up under solar leasing model wherein the Deemed University did not have to invest anything upfront. As per the power purchase agreement signed with the Renewable Energy Supply Company (RESCO), the solar-tariff is, and will remain, substantially lower than the grid-tariff. The RESCO would also take care of the operation and maintenance of the system. However, the main motive for the Deemed University to opt for the solar rooftop system was to bolster its philosophy of practising what it preaches, besides having something that physically manifests the theory that is taught, thereby providing students an actual feel.
To reduce the water demand, buildings in the campus have been provided with low flow fixtures such as dual flush toilets, low flow taps and sensor taps that would result in 25% savings in water use. Further, the wastewater generated from the hostel building equivalent to 8 KL/day will be treated through efficient biological process using a combination of microorganisms and bio-media filter. The treatment system requires low area and energy. The treated water meets the prescribed standards for landscape irrigation. Rainwater run-off from roof and the site would be used for recharge of aquifer. This would enhance the sustainable yield in areas where over-development has depleted the aquifer.
The predominant wind direction is taken into account in designing the open space. The hot air from outside moves into the central court where it passes over the water body and fountain. The air thus gets humidified and becomes cooler. This makes the central atrium area always cooler than the surrounding exterior.
The campus is equipped with three types of cooling systems, integrated to take advantage of different innovative technologies to achieve energy efficiency. They are discussed briefly as under.
• Insulation of external walls with rock wool
• Insulation on terrace done with vermiculite and puff insulation topped with China mosaic for efficient heat reflection
• Double insulation synergy azur glass is used in external façade with aluminum glazing
• Earth Air Tunnel, Thermal mass and VRV system for cooling the building
• Hunter Douglas louvers and pergolas are used in the building for controlling the intensity of incoming sun rays
• Solar water heating systemWaste water recycling with STP
Earth air tunnel system
It is used for free cooling / heating of the building for a major part of the year. This technology uses the heat sink property of earth to maintain comfortable temperatures inside the building. Supplementary systems have been used for extreme conditions (monsoon). In such a system energy savings of nearly 50% compared to conventional system can be achieved. At the campus, this system is used for providing comfort for the rooms in hostel block.
Variable refrigerant volume systems
The VRV system is a modern air-conditioning system, similar to an efficient version of a split air conditioner. The VRV system is highly efficient under partial load conditions and therefore, has been used in areas with varying occupancies such as the office block, laboratories, administrative block and recreation & dining areas of the hostel block. It features customized control of individual zones. Depending on the cooling demands of the building, variable refrigerant volumes circulate through the chillers. The VRV system also eliminates the requirement of a plant room; piping & ducting for chilled water; and contributes to 15% energy savings as compared to a conventional air conditioning system.
Thermal Mass Storage
Thermal mass storage is used in the classrooms. It involves storing energy when available and using it when required. In the proposed arrangement, cooling of the thermal mass is done during night (when ambient temperatures are lower). During daytime when ambient temperature is high, the thermal storage is used as sink for the fresh air requirement. Estimated energy savings of up to 40% can be achieved with this system.
The campus has an efficient artificial lighting system designed for minimizing the energy consumption without compromising the visual comfort in the building. The system takes advantage of day lighting wherever available. Efficient lamps with high lumen output fixed with mirror optics reflectors and bat-wing louvers for glare free uniform illumination have been installed. All fixtures have energy saving electronic ballasts. With efficient designing the lighting loads have been reduced from 2W/m2 to 1 W/m2.
Systems and Procedures for Maintaining and Utilizing Infrastructure
• An appropriate procedures and systems of maintaining building, various utilities and services have been established at TERI SAS.
• The TERI SAS has Service and Maintenance Committee that monitors the activities of administrative, IT, technical services and also monitors the maintenance of buildings infra structure. This committee is headed by the Registrar.
• The TERI SAS's dedicated staffs assist in day to day basis maintenance and cleanliness of the campus
• The administrative and building maintenance services are managed by Associate Director (admin).
• The IT services are managed by IT Officer. ICT assets are maintained by IT section & contracted service provider. The IT section maintains the complete inventory of all assets with details viz. Asset name, user name, location, IP address, etc. Freeware software (GLPI) for maintaining updated record has been implemented which is also used for maintaining inventory and incident management.
• Classrooms: Every classroom at TERI SAS is well equipped with a Projector System attached with a desktop. Routine checkup of all equipment is carried out every day to ensure proper serviceability and a report is forwarded to all concerned. Similarly, serviceability of class rooms are checked once in a week and a report is sent to concerned civil and technical team for necessary compliance.
• The Technical services are managed by Technical Superintendent. Routine checkup of all Panels, pumps motors, DG, audio visual systems, telecommunication systems etc is carried out every day to ensure proper serviceability and a report is forwarded to all concerned. Similarly preventive maintenance of all critical equipment like HT/LT Panels, Transformer, and centralized UPS etc is carried out in every six month.
• The building related repair and maintenance services such as Campus Cleanliness, Painting, Plumber and Carpenter work are ensured by housekeeping in charge in association with Associate Director.
• A Fire Officer coordinates disaster preparedness and is responsible for conducting mock drills.
• The TERI SAS manual on Health, Safety and Environment lays down requisite policy guidelines for safety and maintenance.
• The material policy brings out provisions of AMC of the assets. All critical equipment like elevators, generator sets, LT/HT Panel, UPS, Photocopiers, EPABX Board, Water R O Systems etc., are covered under AMCs which are renewed every year.
• The security of the campus is managed round the clock by a Professional security agency and lady guards have been stationed at the entrance of the hostel main gate.
• Library: TERI SAS has a well-established library in its campus with around 7000 books. The library network is part of the TERI SAS LAN and is equipped with two workstations for its staff and 12 Workstations for users. Code numbers to books are given on the basis of ‘Universal Decimal Classification (UDC) scheme’” and the ‘Library of Congress’ keyword index is used.