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Hamzah Meraj, Faculty of Architecture, Jamia Millia Islamia, New delhi, profile picture
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Green building delhi case study

Suzlon One Earth in Pune, designed by architect Christopher Charles Benninger, is a LEED Platinum certified office complex exemplifying sustainable architecture, covering 10.3 acres with a focus on renewable energy and green design concepts. The campus features 18 hybrid wind turbines, natural lighting solutions, and water conservation systems, making it one of India's largest green buildings and achieving a zero energy status through effective energy management. Additional projects mentioned include Infosys Hyderabad, recognized for its energy efficiency and sustainable materials, and Indira Paryavaran Bhawan in New Delhi, India's first net zero energy building with advanced architectural strategies for energy and water conservation.

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Suzlon One Earth Global Corporate Headquarters, Pune
• Architects – Christopher Charles Benninger. • Location - Pune, Maharashtra, India. • Site area-10.3 acre • Project Year – 2009 • Landscape Design - Ravi & Varsha Gavandi. • Structural Design - Santhosh ,Vastech • Interior Design - Space Matrix in association with Manish Banker, Tao Architects. • Construction Management - Knight Frank INDIA. • Green Building Consultants - Tanmay Tathagat, Kavita Jain Environmenta Design Solution, Delhi. • Cost-Rs.280 crores US$ 63 million (2009) Suzlon One Earth, Pune
Suzlon One Earth, Pune This significantly unique office is designed by Christopher Charles, Pune based architect and has received LEED Platinum rating in 2010. He and his partner came up with the concept “Office in the garden”. Spread over 10 acres, this magnificent structure is one of the largest green building projects of the country and is also one of the India’s first buildings to be LEED (Leadership in Energy and Environmental Design) certified.
Suzlon One Earth, Pune • Suzlon one earth is 100% powered by onsite and offsite renewable sources. • The campus has 18 hybrid wind turbines that fulfil 7% of the total energy consumption, the the rest of energy demand is met from offsite wind turbines. • The structure is designed in a way to ensure maximum daylight exposure thereby reducing reducing artificial lighting consumption. • The infrastructure within the campus is designed to enable water percolation and thereby control storm water runoff thus, contributing towards an increased water table level. Ratings and techiniques: • Suzlon Energy Limited, a world-leading wind energy company based in Pune India. • The architect, pledged to create the greenest office in India. Living the motto of the company, 'powering a greener tomorrow. • The architect relied exclusively on non-toxic and recycled materials. • A million S.F. of ground plus two levels in a 10.4 acre urban setting achieved a LEED Platinum and TERI GRIHA 5 Star certification with 8 percent of its annual energy generated on-site through photovoltaic panels and windmills with a total incremental cost of about 11%.
Suzlon One Earth, Pune Ratings and techiniques: • 154 KW of electricity is produced on site (80% wind and 20% photovoltaic). • All other energy (4MW) is produced in the client's wind mill farms. With 92% (4 MW) being consumed by the project is sustainable energy making this a Zero Energy Project. • Lighting of individual offices is controlled by combined daylight and occupancy sensors. • Sixty five percent of energy is saved by use of LED outdoor light systems in comparison to conventional scheme. • 30 to 40% reduction in operating cost, due to to energy savings and water savings at 30%.
Suzlon One Earth, Pune Architecture features: • Suzlon One Earth derives its inspiration from large Indian historical campuses like Fatehpur Sikri and the Meenakshi Temple complex in Madurai. • the building architecture has borrowed elements of critical rationalism, with over hangs, louvers, pergolas, courtyards, water and natural light permeation. • This sustainable and efficient design provides 75% of the work stations with and external views, allowing inhabitants to enjoy seasons, weather conditions and connect with the time of the day. • Aluminum louvers act as a protective skin allowing daylight and cross ventilation. areas have operable fenestration allowing natural air and ventilation when • These strategies resulted in lower, thinner and longer building shapes that increase the ratio of fenestration to volume, enhancing natural light and ventilation in a hot and dry climatic conditions.
Other ‘Green features’ of One Earth:- A LEED Platinum and GRIHA 5 star certified building, One Earth is one of greenest corporate campuses in the world, some of the features making it a building are: •100% powered by on-site and off-site renewable energy including hybrid wind turbines, solar panels and photovoltaic cells •Rainwater harvesting facilities with on-site water treatment and recycling facilities •On-site organic waste converter •‘Office in garden’ design concept which harvests maximum daylight in work spaces and common areas •Reduction of approximately 35% in operating cost due to energy and water cost savings, a benefit that is transferred to customers through increased investment in technology. INFOSYS LIMITED HYDERABAD
INFOSYS LIMITED HYDERABAD
•Architects - Sundaram Architects Pvt. Ltd. •Location - Pocharam, Hyderabad, India •Project Year - Completed in Sep 2010. • Green consultant - EDS •The building houses 2600 employees and has been planned on 460 acres of land. • Due to its highly acclaimed green building achievements, the building has been acknowledged by researchers in Germany and the Lawrence Berkeley National Lab as one of the 'Best Practices Guide for High Performance Indian Office Buildings’.
• Highlights of the project • LEED NC- Platinum • Glass used-Vision Panel: SKN 444 (Futura) in (6mm - 16mm argon gap - 6mm) combination. -Daylight Panel: PLT T (Pristine White) in (6mm - 12mm - 6mm) • Energy Efficiency- 56% savings from the base case was achieved. • Daylighting - 70% of the overall floor plate was daylight with daylight panel. -100% of the work area is perfectly daylighted. • Additional points achieved through glass - Regional material: Glass manufactured in sriperumbudur plant and processed near by the project site. - Recycled material: Glass is 100% recyclable. Cullet glass (broken glass) is used for glass manufacturing. The percentage of broken glass is 18% of which 6% is sourced from post-consumer waste.
• Other Design Features - Radiant Cooling exploited for one the blocks. - Radiant cooling found more efficient than normal cooling. - Water use reduction by 48%. - Low flow faucets & water closets. - Over 80% of the construction waste diverted to landfills. - Low VOC adhesives, paints and coatings. - Treated waste water used for irrigation & air conditioning makeup.
• Role of Glass - The combined use of PLT TG and SKN 444 II - high performance double glazed Saint-Gobain Glass has been coupled up with the ideal orientation of the building, limiting the facades opening to the East and West (where the direct morning and evening sun strike). - The long faces of the building have been oriented towards north and south with shading devices provided adeptly, especially towards the south. - The narrow floor plate of 16m made it possible for 84% of the regularly occupied spaces to have adequate day-light. • Energy Consumption - The building is 40% more efficient than the globally accepted ASHRAE standard. While the ASHRAE standards for heat gain is 0.9W/sqft, SDB1 managed a .4W/sqft. - The building has an efficient envelope - with a double walled insulation and an insulated roof with reflective tiles. The heat gain of the envelope has been calculated to a 1W/sqft.
• Role of Glass - The combined use of PLT TG and SKN 444 II - high performance double glazed Saint-Gobain Glass has been coupled up with the ideal orientation of the building, limiting the facades opening to the East and West (where the direct morning and evening sun strike). - The long faces of the building have been oriented towards north and south with shading devices provided adeptly, especially towards the south. - The narrow floor plate of 16m made it possible for 84% of the regularly occupied spaces to have adequate day-light. • Material -18% of the total value of materials in the building has been made out of recycled materials. By regionally manufacturing 38% of the total project material by cost, the minimisation on transportation has led to reduced pollution
INDIRA PARYAVARAN BHAWAN Jor Bagh , New Delhi
INTRODUCTION • Project of ministry of environment and forests for construction of new office building at new delhi. • The basic design concept of the project is to make the net zero energy green building. • 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 India’s first net zero building This means that this is a building with zero net energy consumption where the total amount of energy used in the premises on an annual basis is more or less equal to the amount of renewable energy created on the site.
ACHIEVEMENTS • 40% savings in energy • zero electricity billing • 55% savings in water • largest roof top solar power system in any multistoreyed building (930kwp) • first in government sector targeted for both ratings of green building (5star griha leed india platinum) • Preservation of the local ecology, Tree Cutting approvals for 46, but only 19 Cut ,11 Trees Transplanted • Excavated Soil reutilized at other construction sites and the Zoo LAYOUT PLAN
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. • Eco park within the courtyard shall contain a self sustaining low. • Large openings in building form on South and North sides. • Conservation of natural soil and trees. • Orientation of building has been planned reduce ingress of solar radiation. • Large openings North and South faces. • Green areas have been developed on smaller terraces. • Shaded landscape areas to reduce ambient temperature. • Provision of barrier free access . • Surrounding open area parking free by providing adequate parking in the basement.
•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. E W N • DEVELOPING WINTER SOUTHSIDE SUNSPACES FOR OFFICE EMPLOYEES CROSS VENTILATION AT THE MICRO LEVEL THROUGH OPENINGS R O A D PROJECTIONS INTO THE CENTRAL SPACE FOR SHADING + Shading by Passages Natural ventilation due to stack effect Building punctures are designed to aid cross ventilation
•More than 50% area outside the building issoft with plantation and grassing. •circulation roads and pathways soft with grass paver blocks to enable ground water recharge
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- 55% reduction in overall use of water. This was achieved by using: •Low 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
Site and Water Mgmt Strategies Appropriate Shading from Summer Sun, while allowing in winter sun
20 SOLAR PV SYSTEM TOTAL AREA TOTAL AREA OF PANELS ANNUAL ENERGY Generation 930KWp CAPACITY 6000 M2 4650 M2 14.3 lakh units Highest efficiency (20%) Solar PV panels Grid Interactive System
CHILLED BEAMS INDUCTION UNITS Chilled Water Hot Water Total room mixing is achieved through Convection currents within the space Primary air ventilation from Dedicated Outdoor Air Source Adoption of energy efficient ‘chilled beam’ system of air conditioning has resulted in reduction of energy conservation by 40%. This is an innovative air conditioning system, where air conditioning is done by air flow through diffusers and chilled water is circulated right up to the diffuser points.
CHILLED BEAM INSTALLED AT SITE 23 Flexible Duct (6 Inch dia.) Chilled Beam Drain Pipe (¾” dia.) Chilled Water Return Pipe (½” dia.) Supply Air Induced Air Chilled Water Supply Pipe (½” dia.) Chilled beams are used in the building. Room temperature maintained is 26 degree Celsius. Chilled beams with drain pans are used to drain out water droplets due to the condensation during monsoon. 160 TR of air conditioning load of the building is met through chilled beam system.
GEOTHERMAL HEAT EXCHANGE • 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.
Energy Conservation Measures
MATERIALS •Stone available in nearby area for flooring •Terrazzo flooring with locally available stone materials. •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 FALG (Fly Ash Lime Gypsum) bricks and AAC blocks are used in the construction. Instead of clay bricks. •High Efficiency Glass, high VLT,low SHGC & Low U-value,
SOURCES • Archdaily website -http://www.archdaily.com/466958/suzlon- one-earth-global-corporate-headquarters-christopher- benninger • Modern Green Architecture website – http://www.mgsarchitecture.in/projects/460-suzlon-one-earth- pune.html • Photographs - A. Ramprasad Naidu