INDIRA PARYAVARAN BHAWANJor Bagh , New Delhi

BY: MOHIT PANCHAL & RIYA MAJOKA

INTRODUCTION:• THIS IS A 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

LOCATION AND ACCESSIBILITY:PR

IMAR

Y RO

AD(A

URO

BIN

DO M

ARG)

• 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.

ACHIEVEMENTS:

• 40% SAVINGS IN ENERGY• ZERO ELECTRICITY BILLING• 55% SAVINGS IN WATER• ZERO NET DISHARGE• LARGEST ROOF TOP SOLAR

POWER SYSTEM IN ANY MULTISTOREYED BUILDING (930KWP)

• FIRST IN GOVERNMENT SECTOR TARGETED FOR BOTH RATINGS OF GREEN BUILDING (5STAR GRIHA LEEDIndia PLATINUM)

CRITERIONS OF GRIHA FULFILLEDSITE PLANNINGNO. CRITERION POINTS

1 Site selection 1

2 Preserve and protect landscape during construction 5

3 Soil conservation (till post-construction) 2

4 Design to include existing site features 4

5 Reduce hard paving on-site and/or provide shaded 2hard-paved surfaces

6 Enhance outdoor lighting system efficiency and 3use renewable energy system for meeting outdoorlighting requirements

7 Plan utilities efficiently and optimize on-sitecirculation efficiency

3

SOURCE: GRIHA WEBSITE

MEASURES FOR SITE• Wider Front Setback (22m) to protect front tree line• Preserve the integrity of the green street• 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

•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.The Building blocks create a porous block form to optimize•air movement throughout the site and the N- S orientation allows for optimum solar access and shading.

•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

•More than 50% area outsidethe building is softwith plantation and grassing.

•circulation roads and pathways soft with grass paver blocks

to enable ground water recharge

BUILDING PLANNING AND CONSTRUCTION STAGE

NO. CRITERION POINTS

10 Reduce landscape water requirement 3

11 Reduce water use in the building 2

12 Efficient water use during construction 1

13 Optimize building design to reduce conventional energy demand

8

14 Optimize energy performance of building within specified comfort limits

16

15 Utilization of fly-ash in building structure 6

16 Reduce volume, weight, and construction time byadopting efficient technologies (such as pre-cast systems)

4

SOURCE: GRIHA WEBSITE

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•Rain water harvestingEfficient water use during construction-•Use of curing compound

Site and Water Mgmt StrategiesAppropriate Shading from Summer Sun, while allowing in winter sun

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.

Optimize energy performance of building withinspecified comfort limits-• Reducing energy consumption (compared to GRIHA benchmarks) while

maintaining occupant comfort:• o For achieving visual comfort:• • Direct line of sight to the outdoor environment to vision glazing for

buildingoccupants for more than 90% of the occupied spaces.

• Avoiding Deep floor plates to create maximum daylighted spaces.• • Landscaping planned with native species and water body features in

centralcourt and all around the building.

• o For achieving thermal comfort:• • All circulation spaces or passages were naturally ventilated / shaded /

not airconditioned.

• • Energy Efficient Chilled beam based Cooling system proposed together withcondenser water cooling through ground pipes.

• • Openable windows were proposed in conditioned areas to be able to utilizefavourable outdoor conditions.

• • Insulated Walls through using an integrated AAC + Rockwool combinationtogether with high efficiency DGU’s and UPVC

• frames for the windows.

Energy Conservation Measures

NO. CRITERION POINTS

17 Use low-energy material in interiors 4

18 Renewable energy utilization 5

19 Renewable-energy-based hot water system 3

20 Waste water treatment 2

21 Water recycle and reuse (including rainwater) 5

RECYCLE,RECHARGE &REUSE

WASTE MANAGEMENT

NO. CRITERION POINTS

22 Reduction in waste during construction 1

23 Efficient waste segregation 1

24 Storage and disposal of wastes 1

25 Resource recovery from waste 2SOURCE: GRIHA WEBSITE

SOURCE: GRIHA WEBSITE

HEALTH &WELL BEINGNO. CRITERION POINTS

26 Use low-VOC paints/adhesives/sealants 3

27 Minimize ozone depleting substances 1

28 Ensure water quality 2

29 Acceptable outdoor and indoor noise levels 2

30 Tobacco smoke control 1

31 Provide at least the minimum level of accessibility for personswith disabilities

1

32 Energy audit and validation MANDATORY

33 Operation and maintenance 2

34 Innovation points 4SOURCE: GRIHA WEBSITE

19

ENERGY SCENARIO(Average Annual)

Power Requirement (Base Case)

22.0 lakh KWh

Power Requirement(Design Case)

13.6 lakh KWh

Percentage savings 40% (approx)

Targeted Solar Power Generation

14.3 lakh KWh

Net Power generation 0.7 lakh KWh (Surplus)

20

Energy EfficiencyECBC 2007 ACTUAL

Lighting Power Density (LPD)

11.8 W/sqm 5 W/sqm

HVAC load 20 sqm/Tr 40 sqm/Tr

Total 100W/sqm 40 W/sqm

SOURCE- AR,DEEPENDRA PARSAAD REPORT

20

SOLAR PV SYSTEM TOTAL AREATOTAL AREA OF PANELSANNUAL ENERGY Generation

930KWp CAPACITY6000 M24650 M214.3 lakh units

Highest efficiency (20%) Solar PV panels

Grid Interactive System

NET ZERO ENERGY

CHILLED BEAMS INDUCTIONUNITS OVERVIEW:

Chilled WaterHot Water

Total room mixing is achieved through Convection currents

within the space

Primary air ventilation from Dedicated Outdoor Air Source

CHILLED BEAM INSTALLEDAT SITE:

23

Flexible Duct (6 Inch dia.)

Chilled Beam

Drain Pipe (¾” dia.)

Chilled Water Supply Pipe (½”

dia.)

Chilled Water Return Pipe (½”

dia.)

Supply Air

Induce d Air

ANGEGEOTHERMAL HEAT EXCHAT 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 sentat100°F (37.8° C) & back at 900 F

(32.2° C).• One U-Loop has 0.9 TR

HeatRejection capacity, so all together160 TR of Heat rejection is obtained without using a cooling tower.

• Enormous water saving sinceno make up water is required.

• • Make up water pumping&

treatment cost get eliminated.• • Saves cooling tower fan energy.

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 heatingress.•Avoided aluminum as it has high embedded energy•Sandstone Jalis.• Stone and Ferrocement Jalis

Satisfies all the quality parameters that a normal flush door does

•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