New Delhi
Anusmita101119005MohapatraNITTrichy
Indira BhawanParyavaran
Confidential Customized for Lorem Ipsum LLC Version 1.0 We will look into: Approach to Sustainability Energy Efficient Design & Process Design Strategies Salient features of the building
• Climate responsive – hot-dry, warm-humid, composite, – temperate cold climate
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– sun path movements, annual wind directions rainfall
• Reduce the hard paved areas Retain the mature trees Use of low energy or passive heating or cooling
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Energy Efficient Design & Processes
• Climatic zone of the site
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Approach to sustainability
• Selection of building materials shall be based on local Architecture.
• Adopt passive architectural design
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Site Planning solar heat gain. water runoff. open space.
– Protect
– Natural ventilation. – High-quality day lighting – Storm
– Reduce the risk of soil - erosion.
heating – Solar
• A well-planned and optimally oriented building :– Passive
Site Design & Development • Protect – Agricultural lands – Floodplains – Forest areas – Water bodies such as lakes, ponds etc. • Preserve topsoil and existing vegetation.
• Building envelope (plan, section) to control air
• Uses shade (natural or architectural) to control heat gain
• Maximizes use of free solar energy
• Orientation of the building
Passive Architecture Design
• Maximizes use of free ventilation for cooling
flow
• Based upon climate considerations
• Attempts to control comfort
• Uses materials to control heat
• Orientation should preferably be in North-South direction.
Climatic zone - Warm humid
• Provide maximum cross ventilation in the building
Waste management hierarchy adopted
Indira Paryavaran Bhawan is now India’s highest green rated building. The project has received GRIHA 5 Star and LEED Platinum. The building has already won awards such as the Adarsh/GRIHA of MNRE for exemplary demonstration of Integration of Renewable Energy Technologies.
Indira Paryavaran Bhawan, the new office building for Ministry of Environment and Forest (MoEF) sets is a radical change from a conventional building design.
Indira Paryavaran Bhawan uses 70% less energy compared a conventional building. The project adopted green building concepts including conservation and optimization of water by recycling waste water from the site.
Project Details
The project team put special emphasis on strategies for reducing energy demand by providing adequate natural light, shading, landscape to reduce ambient temperature, and energy efficient active building systems. Several energy conservation measures were adopted to reduce the energy loads of the building and the remaining demand was met by producing energy from on-site installed high efficiency solar panels to achieve net zero criteria.
Location New Delhi Coordinates 28° N, 77° E Occupancy type Office (MoEF) Typology New Construction Climate type Composite Project area 9,565 m2 Grid connectivity Grid connected Energy performance index 44 kWh/m2/yr
• Building form wrapped around a pedestrian-friendly shaded green open
green axis from front of site across the atrium.
DesignArchitecturalStrategies
•courtyardAcontinuous
• Eco park within the courtyard shall contain a self sustaining low.
• Large openings in building form on South and North sides.
● Shading devices East, West and South to take care of the solar radiations especially in summer.
● On the Southern side of the building terraces have been created to take the winter sun Barrier free access to differently-abled persons.
● Automated parking in three level basements
● Respecting the Eco-logic of the site. Building Punctures to Aid Cross Ventilation
● Maximum Ground Coverage Used (30%) to keep building height comparable to the surroundings
● Provision of barrier free access .
● Shaded landscape areas to reduce ambient temperature.
● Large openings North and South faces. Green areas have been developed on smaller terraces.
● Surrounding open area parking free by providing adequate parking in the basement.
● The façade has been designed to receive 70% of natural daylight.
Architectural Design Strategies
● Conservation of natural soil and trees.
● Orientation of building has been planned reduce ingress of solar radiation.
Jallis in the lobby to aid cross ventilation and prevent heat gain.
Energy conservation measures
Layout plan and Sections
● Rock wool insulation
Ventilation: Central courtyard helps in air movement as natural ventilation happens due to stack effect. Windows and jaalis add to cross ventilation.
● Optimized Building Envelope – Window assembly (U-Value 0.049 W/m2K),VLT 0.59, SHGC 0.32
● High efficiency glass
Daylighting: 75% of building floor space is day lit, thus reducing dependence on artificial sources for lighting. Inner courtyard serves as a light well.
● uPVC windows with hermetically sealed double glazed using low heat transmittance index glass
● Cool roofs: Use of high reflectance terrace tiles for heat ingress, high strength, hard wearing.
Building Envelope and Fenestration:
Passive Design Strategies
Landscaping: More than 50% area outside the building is covered with plantation.Circulation roads and pathways are soft paved to enable groundwater recharge.
Orientation: Building is north south oriented, with separate blocks connected through corridors and a huge central courtyard. Orientation minimizes heat ingress. Optimal window to wall ratio.
● Local stone flooring
● Fly ash based plaster & mortar
● Stone and Ferro cement jaalis
● High efficiency glass, high VLT, low SHGC & Low U-value, optimized by appropriate shading
Materials and construction techniques :
● Bamboo jute composite doors, frames and flooring
● AAC blocks with fly ash
Passive Design Strategies
● Light shelves for diffused sunlight
● Functional zoning to reduce air conditioning loads.
● Energy efficient lighting system ( LPD = 5 W/m2) , nearly 50% more efficient than Energy Conservation Building Code 2007 requirements ( LPD = 11 W/m2) reduces energy demand further.
● HVAC load of the buildings is 40 m2/TR, about 50% more efficient than ECBC requirements (20 m2/TR)
● Water cooled chillers, double skin air handling units with variable frequency drivers(VFD)
● Control of HVAC equipment & monitoring of all systems through integrated building management system.
● Chilled water is supplied at 16° C and return temperature is 20° C.
● Drain pans are provided with the chilled beams to drain out water droplets due to condensation during monsoon.
● Use of energy efficient lighting fixtures (T5 lamps).
● Chilled beams save AHU/FCU fan power consumption by approximate 50 kW.
Chilled beam system/ VFD/ Screw Chillers
Lighting Design
● Use of lux level sensor to optimize operation of artificial lighting.
● Fresh supply air is pre cooled from toilet exhaust air through sensible & latent heat energy recovery wheel.
● Room temperature is maintained at 26 ±1 ° C
Active Design Strategies
● Remaining lighting load supplied by building integrated photovoltaic (BIPV).
● VFDs provided in chilled water pumping system, cooling tower fans and AHUs.
● 160 TR of air conditioning load of the building is met through Chilled beam system. Chilled beam are used from second to sixth floor. This reduces energy use by 50 % compared to a conventional system.
Optimized Energy Systems / HVAC system
Active Design Strategies
● One U-Loop has 0.9 TR heat rejection capacity. Combined together, 160 TR of heat rejection is obtained without using a cooling tower.
Geothermal heat exchange system
● There are 180 vertical bores to the depth of 80 meter all along the building premises. Minimum 3 meter distance is maintained between any two bores.
● Each bore has HDPE pipe U-loop (32mm outer diameter) and grouted with Bentonite Slurry. Each U-Loop is connected to the condenser water pipe system in the central air conditioning plant room.
● No of panels: 2,844
● Power generation achieved: 300 kWh per day
● Power supply to grid started on 19.11.2013
Renewable Energy
Renewable Energy
● Solar PV System of 930 kW capacity
● Total Area of panels: 4,650 m2
● Annual Energy Generation: 14.3 lakh unit ACTUAL GENERATION ON SITE ( as on 25.01.2014)
● Total generation: 2.0 kWh
● Total Area: 6,000 m2
Solid ManagementWaste
● Involve use of efficient building and plumbing
● Landscaping water requirement reduction.
● Plan proper storage, and disposal
● Aquifer recharging
● Minimize waste generation.
● services components.
● Streamline waste segregation.
● Waste-water recycling
● At the time of the construction allocate separate space for the collected waste before transferring it to the recycling/disposal station.
Integrated managementwater
● Minimize the consumption of mains supply potable water
● Promote resource recovery from waste.
● rain water harvesting
● The use of water conservation fixtures.
● Regenerative Architecture keeping the existing balance of nature to connect outdoor greens and the courtyard greens
● Developing Winter Southside sunspaces for office Employees
Showcasing Biodiversity
● Showcase green bio diversity from Bio-climatic regions of Hot Dry, Composite, Warm Humid, Temperate, Cold Dry & Cold Cloudy
Thank you.