INDIRA-PARYAVARAN-BHAWAN case study for architecture

INDIRA-PARYAVARAN-BHAWAN case study for architecture. its plans, elevation and energy conservation strategies

1. INDIRA PARYAVARAN BHAWAN, New Delhi By- Prashasti Jain Ronit Singh

2. INTRODUCTION This was the new head office of the Ministry of Environments and Forests at New Delhi. The design concept was to create a net zero energy green building. Architect: PWD Plot Area: 9565sq m Maximum Ground Coverage:30% F.A.R: 200 Height:35m Built-up area : 3,1400 m2 (18726 m2 – superstructure & 12675 m2 Basement) Year of completion : 2013

3. LOCATION: The site is surrounded by NDMC Housing on the East with a 15x12m row on the west and Lodhi colony to its North and with GPRA colony to its south The Plot is accessible via Aurobindo Marg and via Lodhi Road The Metro Station Jor Bagh is at a walkable distance of 300m

4. ACHIEVEMENTS 40% Savings In Energy Zero Electricity Billing 55% Savings In Water Zero Net Discharge Largest Roof Top Solar Power System In Any Multistoried Building (930kwp) First In Government Sector Targeted For Both Ratings Of Green Building (5 star GRIHA & LEED India Platinum)

5. SITE LAYOUT PLAN

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 Courtyard. E S W N

7. More than 50% area outside the building contains soft plantations and grass Circulation roads and pathways with grass paver blocks to enable ground water recharge

8. GRIHA CRITERIAS FULFILLED

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 discharge fixtures Dual Flushing cistern Waste water treatment Reuse of treated water for irrigation and cooling towers for HVAC Rainwater harvesting Efficient water use during construction- Use of curing compound

10. 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 on cooling towers fans and ahu. • Pre-cooling of fresh air from toilet exhaust air through sensible & latent heat energy recovery wheel • 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.

11. Natural ventilation due to stack effect SITE PLANNING WITH RESPECT TO NATURE - Maximum Ground Coverage Used (30%) to keep building height comparable to the surroundings - Respecting the Eco- logic of the site. Building Punctures to Aid Cross Ventilation

12. CHILLED BEAM SYSTEM INSTALLED AT SITE

13. ENERGY CONSUMPTION ON SITE

14. 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 aluminum as it has high embedded energy Sandstone Jalis. Stone and Ferrocement Jalis 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

15. Utilization of fly-ash in building structure- Ready Mix Concrete with PPC having more than 30% fly ash content. Reduce volume, weight, and construction time by adopting efficient technologies (such as pre-cast systems) Onsite renewable energy system with solar photovolatic cells to meet total energy demand

16. . SECTION AA’

17. . SECTION BB’

18. ARCHITECTURAL DESIGN STRATEGIES Building form wrapped around a pedestrian-friendly shaded green open courtyard A continuous green axis from front of site across the atrium. Large openings in building form on South and North. Conservation of natural soil and trees. Orientation of building has been planned reduce ingress of solar radiation. Shaded landscape areas to reduce ambient temperature. Building punctures are designed to aid cross ventilation NORTH

19. The façade has been designed to receive 70% of natural daylight. Shading devices in East, West and South to take care of the solar radiations especially in summer. O n the Southern side of the building terraces have been created to take the winter sun . B arrier free access for differently- abled pe ople . Automated parking in three level basements ARCHITECTURAL DESIGN STRATEGIES

20. CROSS VENTILATION AT THE MICRO LEVEL THROUGH OPENINGS JAALIS IN THE LOBBY TO AID CROSS VENTILATION & PREVENT HEAT GAIN R O A D Usage of Building configurations for utilizing lessons from nature and traditional built environments PROJECTIONS INTO THE CENTRAL SPACE FOR SHADING + Shading by Passages

21. Fly Ash Brick Aerated Autoclaved Cement (AAC) Block Portland Puzzolona Cement ( with 30 % fly ash ) Patterned multi- coloured terrazzo flooring with salvaged stone pieces Grass Paver Blocks Pavements Local Stone with Marble Strips Calcium Silicate Tiles Bamboo Jute Composite for Frames & Doors Low Volatile Organic Compound Paints Natural stone for flooring and cladding USE OF ECO FRIENDLY MATERIALS

22. SUSTAINABLE BUILDING FEATURES Natural ventilation Solar power generation Solar passive envelope design including walls & roof insulation & fenestration Efficient electrical equipment as per ECBC 2007 requirements Waste water recycling for Cooling Tower Rain water harvesting Geo thermal technology for heat rejection of AC system Design inside temperature: 26º C

23. NOTABLE FEATURES OF THE BUILDING A Net Zero Energy Building Energy demand and generation of building is 14 lakh KWH Energy Efficiency LPD achieved is 5 watt/sqm as against 11.8 watt/sqm of ECBC 2007 saving in energy > 50% 450Sft/Tr as against 150sft/Tr in conventional building Electrical load designed as 4.3 W/Sft as against 10W/sft in conventional building

24. ENERGY CONSERVATION MEASURES Overall Design Load optimized at 800 KW High Efficiency Solar Panels for Net Zero Energy efficient T- 5 and LED Fixtures Innovative Chilled Beam system for cooling Water cooled chillers, double skin air handling units with variable frequency drives (VFD) Geo thermal heat exchange for heat rejection from Air- conditioning system

25. INNOVATION & DESIGN Geothermal heat rejection Chilled beam system for HVAC Regenerative Lift High Efficiency Solar panel. Mechanized car parking. Low energy EM technology for Bio digestion of organic waste.

26. . REDEVELOPMENT PLAN OF ALIGANJ