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PASSIVE DESIGN STRATEGIES
INDIRA PARYAWARAN BHAWAN,NEW DELHI
SHREYA GUPTA
Amity university
Lucknow
Indira Paryavaran Bhawna, the new office building for Ministry of
Environment and Forest (MoEF) sets is a radical change from a
conventional building design
CASE STUDY – INDIRA PARYAVARAN BHAWNA
Indira Paryavaran Bhawan
Ministry of Environment and Forest (MoEF)
Location-New Delhi
Geographical coordinates - 28° N, 77° E
Occupancy Type - Office (MoEF)
Typology - New Construction
Climate Type - Composite
Project Area - 9,565 m2
Grid Connectivity - Grid connected
BASIC FEATURES
Net zero energy green building
Plot area – 9565 sq. mt
Height – 35 m
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.
• 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.
• 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.
Building orientation
Evaporative cooling
Corridor and Courtyard
Open terrace garden
Passive solar heating
Solar heat gain.
Natural ventilation.
Solar power generation
Solar passive envelope design including walls ,
roof insulation & fenestration
Landscaping
High-quality day lighting
Storm water runoff.
Reduce the risk of soil - erosion.
.
PASSIVE DESIGN STRATEGIES
Efficient electrical equipment as per ECBC requirements
Waste water recycling for Cooling Tower
Rain water harvesting
Geo thermal technology for heat rejection of AC system
Chilled beam system of HVAC
Regenerative lifts
Fully automated car parking in basements
Grass pavers in circulation areas
Energy efficient air conditioning system and lighting
Conversion of braking energy into electricity in lifts
Lux level sensors
930 KWp rooftop solar power plant
Low discharge water fixtures
Landscaping with no hard paving Fly ash-based products in construction
Sewage treatment plant of 30 KLD capacity
ECO-FRIENDLY FEATURES
FRONT VIEW
TOP VIEW
• RCC framed structures, steel structures and composite structures have been
used.
• The building is designed for earthquake forces of seismic
zone IV, and it has a raft foundation.
• The main building has been designed as RCC framed
structure.
• It has two blocks connected with corridors from 2nd floor
onwards.
• Each of these two blocks have been divided into three
parts by providing two seismic joints of 250 mm width
each. Normal grids are 6mX6m with column size 750mmX750mm.
CONSTRUCTION DETAILS
• Seven storeyed composite columns have been erected over RCC columns of
the basement.
• Moment connections and shear connections have been used for connecting
members. Shear studs have been used and designed to form composite
action of RCC slab and steel beams.
• A pre-camber has been provided in the beams of 19m span to control
excessive deflection.
• Structural steel decking system of Tata Bluescope (Tata Smart Deck) has been
used for casting of slabs by eliminating conventional centering and
shuttering.
Pedestrian entry has been provided in the front with vehicular
access on the sides.
N
First basement parking with automated parking
below
Helps reduce volume of parking excavation/
embodied energy of structure.
UPPER BASEMENT
The AC plant room, electric substation, DG sets, fire-fighting pumps, robotic
parking for 330 cars and sewage treatment plants are located in the
basements.
Automated parking with 19sqm/car instead of
35sqm/car in manual parking.
LOWER BASEMENT
BASEMENT
SITE ORIENTATION
Building is oriented along the north-south direction with separate blocks
connected through corridors and a huge central court yard.
FACADE is in north direction.
Larger part of the building is facing north
and south direction, it leads to less heat
gain in summers.
Efficient usage of the perimeter to
maximize day lit area and views for the
users.
Orientation minimizes heat ingress.
GROUND FLOOR PLAN
PROPER CROSS VENTILATION
Building is oriented in such a manner to utilize natural wind flow
for cross ventilation.
• Photovoltaics stepping towards the south side creating a strong
agenda for the future for urban buildings on limited site areas.
• These blocks are connected through corridors with stone jaalis
and balustrades above the 4th floor level.
Stone jallis used in east and
south direction
Benefit of natural wind flow
and sunlight
Water fountain
Space frame above
central courtyard
ELEVATION
(EAST FACING) S N
Stack and cross ventilation
through Atrium
ATRIUM
Trees along the building providing insulation from heat.
N
S
OPEN GREEN TERRACE
• Seventh floor of the building has open green terrace.
• Water source for plants is Treated Waste water.
• Helps in regulating the indoor temperature.
• Facilitate efficient Rain Water Harvesting.
• Helping in Thermal insulation.
• 75% of building floor space is day lit, thus reducing dependence on
artificial sources for lighting.
• Inner courtyard serves as a light well.
• Appropriate Shading from Summer Sun ,
while allowing in winter sun.
DAYLIGHTING
• Jalli used in east and south direction.
• Stone and Ferro cement jaalis.
BUILDING ENVELOPE AND FENESTRATION:
• Optimized Building Envelope – Window assembly (U-Value 0.049
W/m2K),VLT 0.59, SHGC 0.32
• uPVC windows with hermetically sealed double glazed using low
heat transmittance index glass
• Rock wool insulation
• High efficiency glass
COOL ROOFS:
Use of high reflectance terrace tiles for heat ingress,
high strength, hard wearing.
CENTRAL COURTYARD
• The building has the advantage of natural ventilation throughout
happens due to stack effect, with a central courtyard between
the North and South blocks.
• An entrance atrium of four storey height has been made in the
middle of the North block and in the entrance to the South block.
• A shaded interaction space.
Ground floor plan
SOUTH BLOCK
NORTH BLOCK
CENTRAL COURTYARD
• 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.
• Developing Winter Southside sunspaces for office Employees
SHOWCASING
BIODIVERSITY
Keeping the existing balance of nature to connect outdoor greens and the
courtyard greens.
Deciduous trees plantation
SOUTH SIDE
• Large openings in building form
on South and North sides.
• More than 50% area outside the
building is covered with
plantation.
East side
North side
• Circulation roads and pathways are
soft paved to enable ground water
recharge.
SHOWING BIODIVERSITY
Grassland Communities, Conservatory of Fruit
yielding species, Medicinal herbs, Native Flora
Subtropical mixed evergreen forest ecosystem
TOP CANOPY – Toona ciliata, Dalbergia latifolia
MIDDLE STOREY – Camphora ,Artocarpus
SHRUB LAYER – Dillenia indica
HERBS AND GRASSES – Desmodium , Triflorom
CLIMBERS – Combretum, Vigna capensis
• Fly Ash
Maximum utilization of Fly Ash.
In concrete , mortars and brick walls.
Reduce volume, weight and construction time.
• AAC Blocks
AAC blocks with fly ash for recycling
and insulation.
It have thermal and good sound
insulation property.
MATERIALS USED FOR BUILDING CONSTRUCTION
• Stone and Ferro cement jaalis
• Local stone flooring
Use of material available within a radius of 700km.
Dholpur stone cladding has been provided over fly ash brick/AAC block
walls up to two and half storeys.
DHOLPUR STONE
GRANITE
(lakha red)
• Terrazzo Flooring
• Bamboo jute composite doors, frames and
flooring
LOW ENERGY MATERIALS
Use of material available having Recycled content
Calcium silicate tiles Terrazzo tiles
Crazy marble
USAGE OF MATERIALS WITH LOW EMBODIED ENERGY
• Reflective Roofing
• Cool Roofs with high SRI tiles – high
strength, hard wearing
• Light shelves for bringing in
diffused light
• High efficiency glass
• Low U-value light shelves for
bringing in diffused sunlight
RCC LIGHTSHELF
WITH REFLECTIVE
SURFACE
RENEWABLE SOURCES OF
ENERGY
Solar PV System of 930 kW capacity
Total area - 6000 sq. mt
Total area of panels – 4650 sq. mt
No of panels – 2,844
Annual Energy Generation – 14.3 lakh unit
The building has large span trusses at terrace
and space frames in the central courtyard to
support solar panels.
Provision of Solar Photovoltaics for Net Zero requirement also Shades the roof.
Salient Features Solar power generation
Solar passive envelope design including walls & roof insulation & fenestration.
Efficient electrical equipment as per ECBC requirements.
Waste water recycling for Cooling Tower.
Rain water harvesting.
ENERGY CONSERVATION MEASURES
Electrical load designed as 4.3 W/Sqft as against 10W/sqft in conventional building
WATER MANAGEMENT STRATEGIES
• The use of water conservation
fixtures.
• Landscaping water requirement
reduction.
• Aquifer recharging
• Involve use of efficient building and
plumbing services components.
• Minimize the consumption of mains
supply potable water.
RAIN WATER HARVESTING
WASTE-WATER RECYCLING
• Condenser water heat shall be rejected to earth by
boring at suitable depth and sending hot water at
100 degree F and back at 90 degree F.
• Enormous water saving since no make up water is
required.
• Make up water pumping and treatment cost get
eliminated.
• Saves cooling tower fan energy.
GEO THERMAL COOLING
CHILLED BEAM SYSTEM FOR HVAC
Working - Supply air flows through nozzles in
small air jets which induce room air to flow
around the coil and air gets cooled.
• Reduces energy consumption
• Easy installation
• No noise as no moving parts
• Easy air balancing activity
• No filters maintenance
• Save architectural space height
160 TR of air conditioning load of the building is met through Chilled beam system.
Chilled beam are used from second to sixth floor except for the ground floor and 7th
floor on the northern side. In these locations, a chilled beam system was not
provided due to height of more than 3m and possible high humidity levels in areas
like cafeteria, yoga room and gymnasium.
This reduces energy use by 50 % compared to a conventional system.
HVAC load of the buildings is 40 m2/TR
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.
Water cooled chillers, double skin air handling units with variable frequency
drivers(VFD)
Chilled beams save AHU/FCU fan power consumption by approximate 50 kW.
Functional zoning to reduce air conditioning loads.
Room temperature is maintained at 26 ±1 ° C
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.
One U-Loop has 0.9 TR heat rejection capacity. Combined together, 160 TR of heat
rejection is obtained without using a cooling tower.
LIGHTING DESIGN
• 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.
• Remaining lighting load supplied by building integrated photovoltaic (BIPV).
• Use of energy efficient lighting fixtures (T5 lamps).
• Use of lux level sensor to optimize operation of artificial lighting.
• Optimized Energy Systems / HVAC system.
ANNUAL ENERGY PRODUCTION AND CONSUMPTION(MWh)
ENERGY CONSUMPTION ON SITE
THANK YOU

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Passive Design Strategies for Net Zero Energy Building

  • 1. PASSIVE DESIGN STRATEGIES INDIRA PARYAWARAN BHAWAN,NEW DELHI SHREYA GUPTA Amity university Lucknow
  • 2. Indira Paryavaran Bhawna, the new office building for Ministry of Environment and Forest (MoEF) sets is a radical change from a conventional building design CASE STUDY – INDIRA PARYAVARAN BHAWNA
  • 3. Indira Paryavaran Bhawan Ministry of Environment and Forest (MoEF) Location-New Delhi Geographical coordinates - 28° N, 77° E Occupancy Type - Office (MoEF) Typology - New Construction Climate Type - Composite Project Area - 9,565 m2 Grid Connectivity - Grid connected
  • 4. BASIC FEATURES Net zero energy green building Plot area – 9565 sq. mt Height – 35 m 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.
  • 5. • 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. • 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.
  • 6. Building orientation Evaporative cooling Corridor and Courtyard Open terrace garden Passive solar heating Solar heat gain. Natural ventilation. Solar power generation Solar passive envelope design including walls , roof insulation & fenestration Landscaping High-quality day lighting Storm water runoff. Reduce the risk of soil - erosion. . PASSIVE DESIGN STRATEGIES
  • 7. Efficient electrical equipment as per ECBC requirements Waste water recycling for Cooling Tower Rain water harvesting Geo thermal technology for heat rejection of AC system Chilled beam system of HVAC Regenerative lifts Fully automated car parking in basements Grass pavers in circulation areas Energy efficient air conditioning system and lighting Conversion of braking energy into electricity in lifts Lux level sensors 930 KWp rooftop solar power plant Low discharge water fixtures Landscaping with no hard paving Fly ash-based products in construction Sewage treatment plant of 30 KLD capacity ECO-FRIENDLY FEATURES
  • 9. • RCC framed structures, steel structures and composite structures have been used. • The building is designed for earthquake forces of seismic zone IV, and it has a raft foundation. • The main building has been designed as RCC framed structure. • It has two blocks connected with corridors from 2nd floor onwards. • Each of these two blocks have been divided into three parts by providing two seismic joints of 250 mm width each. Normal grids are 6mX6m with column size 750mmX750mm. CONSTRUCTION DETAILS
  • 10. • Seven storeyed composite columns have been erected over RCC columns of the basement. • Moment connections and shear connections have been used for connecting members. Shear studs have been used and designed to form composite action of RCC slab and steel beams. • A pre-camber has been provided in the beams of 19m span to control excessive deflection. • Structural steel decking system of Tata Bluescope (Tata Smart Deck) has been used for casting of slabs by eliminating conventional centering and shuttering.
  • 11. Pedestrian entry has been provided in the front with vehicular access on the sides. N
  • 12. First basement parking with automated parking below Helps reduce volume of parking excavation/ embodied energy of structure. UPPER BASEMENT The AC plant room, electric substation, DG sets, fire-fighting pumps, robotic parking for 330 cars and sewage treatment plants are located in the basements. Automated parking with 19sqm/car instead of 35sqm/car in manual parking. LOWER BASEMENT BASEMENT
  • 13. SITE ORIENTATION Building is oriented along the north-south direction with separate blocks connected through corridors and a huge central court yard. FACADE is in north direction. Larger part of the building is facing north and south direction, it leads to less heat gain in summers. Efficient usage of the perimeter to maximize day lit area and views for the users. Orientation minimizes heat ingress. GROUND FLOOR PLAN
  • 14. PROPER CROSS VENTILATION Building is oriented in such a manner to utilize natural wind flow for cross ventilation.
  • 15. • Photovoltaics stepping towards the south side creating a strong agenda for the future for urban buildings on limited site areas. • These blocks are connected through corridors with stone jaalis and balustrades above the 4th floor level. Stone jallis used in east and south direction Benefit of natural wind flow and sunlight Water fountain Space frame above central courtyard ELEVATION (EAST FACING) S N
  • 16. Stack and cross ventilation through Atrium ATRIUM Trees along the building providing insulation from heat. N S
  • 17. OPEN GREEN TERRACE • Seventh floor of the building has open green terrace. • Water source for plants is Treated Waste water. • Helps in regulating the indoor temperature. • Facilitate efficient Rain Water Harvesting. • Helping in Thermal insulation.
  • 18. • 75% of building floor space is day lit, thus reducing dependence on artificial sources for lighting. • Inner courtyard serves as a light well. • Appropriate Shading from Summer Sun , while allowing in winter sun. DAYLIGHTING • Jalli used in east and south direction. • Stone and Ferro cement jaalis.
  • 19. BUILDING ENVELOPE AND FENESTRATION: • Optimized Building Envelope – Window assembly (U-Value 0.049 W/m2K),VLT 0.59, SHGC 0.32 • uPVC windows with hermetically sealed double glazed using low heat transmittance index glass • Rock wool insulation • High efficiency glass COOL ROOFS: Use of high reflectance terrace tiles for heat ingress, high strength, hard wearing.
  • 20. CENTRAL COURTYARD • The building has the advantage of natural ventilation throughout happens due to stack effect, with a central courtyard between the North and South blocks. • An entrance atrium of four storey height has been made in the middle of the North block and in the entrance to the South block. • A shaded interaction space. Ground floor plan SOUTH BLOCK NORTH BLOCK CENTRAL COURTYARD
  • 21. • 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. • Developing Winter Southside sunspaces for office Employees SHOWCASING BIODIVERSITY Keeping the existing balance of nature to connect outdoor greens and the courtyard greens. Deciduous trees plantation SOUTH SIDE
  • 22. • Large openings in building form on South and North sides. • More than 50% area outside the building is covered with plantation. East side North side • Circulation roads and pathways are soft paved to enable ground water recharge.
  • 23. SHOWING BIODIVERSITY Grassland Communities, Conservatory of Fruit yielding species, Medicinal herbs, Native Flora Subtropical mixed evergreen forest ecosystem TOP CANOPY – Toona ciliata, Dalbergia latifolia MIDDLE STOREY – Camphora ,Artocarpus SHRUB LAYER – Dillenia indica HERBS AND GRASSES – Desmodium , Triflorom CLIMBERS – Combretum, Vigna capensis
  • 24. • Fly Ash Maximum utilization of Fly Ash. In concrete , mortars and brick walls. Reduce volume, weight and construction time. • AAC Blocks AAC blocks with fly ash for recycling and insulation. It have thermal and good sound insulation property. MATERIALS USED FOR BUILDING CONSTRUCTION
  • 25. • Stone and Ferro cement jaalis • Local stone flooring Use of material available within a radius of 700km. Dholpur stone cladding has been provided over fly ash brick/AAC block walls up to two and half storeys. DHOLPUR STONE GRANITE (lakha red)
  • 26. • Terrazzo Flooring • Bamboo jute composite doors, frames and flooring
  • 27. LOW ENERGY MATERIALS Use of material available having Recycled content Calcium silicate tiles Terrazzo tiles Crazy marble
  • 28. USAGE OF MATERIALS WITH LOW EMBODIED ENERGY • Reflective Roofing • Cool Roofs with high SRI tiles – high strength, hard wearing • Light shelves for bringing in diffused light • High efficiency glass • Low U-value light shelves for bringing in diffused sunlight RCC LIGHTSHELF WITH REFLECTIVE SURFACE
  • 29. RENEWABLE SOURCES OF ENERGY Solar PV System of 930 kW capacity Total area - 6000 sq. mt Total area of panels – 4650 sq. mt No of panels – 2,844 Annual Energy Generation – 14.3 lakh unit The building has large span trusses at terrace and space frames in the central courtyard to support solar panels.
  • 30. Provision of Solar Photovoltaics for Net Zero requirement also Shades the roof.
  • 31. Salient Features Solar power generation Solar passive envelope design including walls & roof insulation & fenestration. Efficient electrical equipment as per ECBC requirements. Waste water recycling for Cooling Tower. Rain water harvesting.
  • 32. ENERGY CONSERVATION MEASURES Electrical load designed as 4.3 W/Sqft as against 10W/sqft in conventional building
  • 33. WATER MANAGEMENT STRATEGIES • The use of water conservation fixtures. • Landscaping water requirement reduction. • Aquifer recharging • Involve use of efficient building and plumbing services components. • Minimize the consumption of mains supply potable water. RAIN WATER HARVESTING WASTE-WATER RECYCLING
  • 34. • Condenser water heat shall be rejected to earth by boring at suitable depth and sending hot water at 100 degree F and back at 90 degree F. • Enormous water saving since no make up water is required. • Make up water pumping and treatment cost get eliminated. • Saves cooling tower fan energy. GEO THERMAL COOLING
  • 35. CHILLED BEAM SYSTEM FOR HVAC Working - Supply air flows through nozzles in small air jets which induce room air to flow around the coil and air gets cooled. • Reduces energy consumption • Easy installation • No noise as no moving parts • Easy air balancing activity • No filters maintenance • Save architectural space height
  • 36. 160 TR of air conditioning load of the building is met through Chilled beam system. Chilled beam are used from second to sixth floor except for the ground floor and 7th floor on the northern side. In these locations, a chilled beam system was not provided due to height of more than 3m and possible high humidity levels in areas like cafeteria, yoga room and gymnasium. This reduces energy use by 50 % compared to a conventional system. HVAC load of the buildings is 40 m2/TR 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. Water cooled chillers, double skin air handling units with variable frequency drivers(VFD)
  • 37. Chilled beams save AHU/FCU fan power consumption by approximate 50 kW. Functional zoning to reduce air conditioning loads. Room temperature is maintained at 26 ±1 ° C 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. One U-Loop has 0.9 TR heat rejection capacity. Combined together, 160 TR of heat rejection is obtained without using a cooling tower.
  • 38. LIGHTING DESIGN • 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. • Remaining lighting load supplied by building integrated photovoltaic (BIPV). • Use of energy efficient lighting fixtures (T5 lamps). • Use of lux level sensor to optimize operation of artificial lighting. • Optimized Energy Systems / HVAC system.
  • 39. ANNUAL ENERGY PRODUCTION AND CONSUMPTION(MWh)