Indira paryavaran bhawan

Net zero building-sustainable Architecture

1. INDIRA PARYAVARAN BHAWAN: NET ZERO ENERGY GREEN BUILDING k.Shamitha v.harika SUBJECT :- PERFORMANCE EVALUATION OF BUILDINGS (PEB) AAR806

2. Paryavaran Bhawan located in New Delhi, is India’s first on site net zero building. Features include a passive solar building design. The project, started in 2011, was inaugurated on 25 February 2014. The building is expected to qualify as a five-star GRIHA and a LEED Platinum rating. The building has its own solar power plant, sewage treatment facility, Fully Automatic Robotic Multi-level Car Parking system facility & parking facility and geothermal heat exchange system. Zero Energy Green Building. This project is intiated by ministry of environment and forests . PLOT Area:9565sqm Maximum Ground Coverage:30% Height:35m Built-up area : 3,1400 m2 (18726 m2 – superstructure & 12675 m2 INDIRA PARYAVARAN BHAWAN

3. SITE SELECTION – GRIHA RATED

4. LOCATION AND ACCESSIBILITY: The site is surrounded on east by ndmc housing and 15m. Row, on west by 12m row and on north lodhi colony and 12m. Row, on south gpra colony of aliganj . The plot is easily approachable from aurobindo marg and lodhi road. A metro station " jorbagh " is at walkable distance of about 300m from this place.

5. SITE Wider front setback (22m) to protect front tree line Preserve the integrity of the green street Preservation of the local ecology , out of 46 tree only 19 was destroyed and 11trees was transplanted. Excavated soil reutilized at other construction sites. The ipb office building for the ministry of environment and forests has been planned in 2 parallel blocks facing the north south direction, with a large linear open court in the centre. Air movement throughout the site and the NS orientation allows for optimum solar access and shading.

6. Effective ventilation by orientating the building e-w and by optimum integration with nature by separating out different blocks with connecting corridors and A huge central court yard.

7. More than 50% area outside the building is soft with plantation and grassing. •circulation roads and pathways soft with grass paver blocks to enable ground water recharge LANDSCAPING TOWARDS EAST SIDE LANDSCAPING TOWARDS NORTH SIDE

8. BULIDING LEVEL-GRIHA RATED

9. BUILDING PLANNING AND CONSTRUCTION MEASURES Reduce landscape water requirement: Drip irrigation Use of native species of shrubs and trees having low water demand in landscaping Low lawn area so as to reduce water demand. Reuse of treated water for irrigation Reduce water use in the building: Low water discharge fixtures Dual Flushing cistern Waste water treatment Reuse of treated water for irrigation and cooling towers for HVAC Rain water harvesting Efficient water use during construction- Use of curing compound

10. Site and Water Management Strategies: Appropriate Shading from Summer Sun, while allowing in winter sun

11. Optimize building design to reduce conventional energy demand.- Energy efficient light fittings to reduce energy demand Part condenser water heat rejection by geothermal mechanism.This will also help in water conservation. In cooling towers for hvac system variable chilled water pumping system through vfd. Vfd(Variable Frequency Drive) on cooling towers fans and AHU. Entire hot water generation through solar panels. Maximum daylighting Regenerative lifts. Use of lux level sensor to optimize operation of artificial lighting. Solar powered external lighting.

12. Optimize energy performance of building within specified comfort limits- Reducing energy consumption Direct line of sight to the outdoor environment to vision glazing for building occupants for more than 90% of the occupied spaces. Avoiding deep floor plates to create maximum daylighting spaces Landscaping planned with native species and wate body features in central court and all around the building. FOR ACHIEVING THERMAL COMFORT: All circulation spaces or passage were naturally ventilated/shaded/not air conditioned. Energy efficient chilled been based cooling system proposed together with condenser water cooling through ground pipes Openable windows were proposed in conditioned areas to be able to utilize favourable outdoor conditions Insulated walls through using an integrated AAC+rockwool combination together with hight efficiency DGU’s and UPVC

13. Energy Conservation Measures

14. Utilization of fly-ash in building structure- Ready Mix Concrete with PPC(Pretoria Portland Cement) having more than 30% fly ash content. FLY ASH = 40 % Reduce Volume, Weight, And Construction Time By Adopting Efficient Technologies (Such As Pre-cast Systems)- On Site Renewable Energy System With Solar Photovoltaic Cells To Meet Total Energy Demand. Fly

15. RECYCLE,RECHARGE &REUSE

16. HEALTH &WELL BEING

17. Multi stored building with 100% ON-SITE Power Generation Largest roof top solar power system in any multistoried building (930KWP)

18. GEOTHERMAL HEAT EXCHANGE AT SITE: There are 180 vertical bores at the Depth of 80 meter all along the Building Premises. Minimum 3 meter distance is maintained between any two bores. Each bore is lowered with HDPE pipe U-loop (32mm outer Dia.) and grouted with Bentonite Slurry. Each U-Loop is connected to MS Header Pipe(100mm Dia.)which finally joins the Condenser Water Line in Plant Room. Condenser hot water is sent at 100°F (37.8° C) & back at 900 F (32.2° C). One U-Loop has 0.9 TR Heat Rejection capacity, so all together 160 TR of Heat rejection is obtained without using a cooling tower. Enormous water saving since no make up water is required. Make up water pumping & treatment cost get eliminated. Saves cooling tower fan energy.

19. MATERIALS Stone available in nearby area for flooring Terrazzo flooring with locally available stone materials. Fly ash brick. AAC blocks. Jute bamboo composite for door frames & shutters. UPVC windows with hermetically sealed double using low heat transmittance index glass. Use of high reflectance terrace tiles for low heat ingress. Avoided aluminium as it has high embedded energy Sandstone Jallis . Stone and Ferrocement Jallis . Bamboo Jute Composite Doors and frames & flooring High Efficiency Glass, high VLT, low SHGC & Low U-value, Optimized by shading Light Shelves for bringing in diffused sunlight Use of material available having Recycled content

20. SOURCES : https://www.slideshare.net/mobile/supergirlanchal/indira-paryavaran-bhawan-and-griha-49343513 https://www.slideshare.net/mobile/Danfossindia/indira-paryavaran-bhawan-delhi-indias-first-on-site-net-zero-building https://www.nbmcw.com/tech-articles/case-studies/38475-indira-paryavaran-bhawan-first-on-site-zero-net-energy-building-of-india.html THANK YOU