Green Buildings & Sustainable Cities
Ar Anagha Paranjape-PurohitPartner, VK:e environmental
Trustee, Sustainability InitiativesTrustee, Sustainability Initiatives
DISHA @ Pune
21-22 January 2014
Do we really need Green
Buildings in India?
World per capita Carbon dioxide Emissions
YES! We do!
World Carbon dioxide Emissions
Exploring the ‘Green’
• What are ‘Green Buildings’?
• What is Green Architecture?
• What is Green Design?
Green Design Concepts
• The Focus of Green Building
Design is to provide: Response to
Climate
Thermal ComfortThermal Comfort
Visual Comfort
Reduce, Recycle
Reuse, RenewEnergy Efficiency
Resource Optimization
Climate Zones of India
COLD & SUNNY COLD & CLOUDY COMPOSITE
HOT & DRYWARM & HUMID MODERATE
Climate Analysis
Annual Temperatures & Patterns
Annual Radiation & Solar Exposure
Annual Rainfall & PatternsAnnual Rainfall & Patterns
Windflows , Speeds and Trends
Daylight Availability
RESPONDING TO CLIMATE IN
DESIGN
Hot & DrySmall Openings
Facing Inwards
Low heights
Warm & HumidCloistered Passages,
Outward Facing
Deep Overhangs
Protected Openings
ModerateFacing Inwards
Courtyard Ventilation
Cloistered Passages
Mutual Shading
CompositeFacing Inwards
Shaded Openings
Small Openings
Spaces Planned for Seasonal Extremes
Cold & SunnyOpenings facing the Sun
Thermal Mass
Restricting Air Movement
Cold & CloudyProtection from Dampness
Restrict Air Movement
Openings Facing the Sun
Building Design
Building Envelope
Building Materials & Finishes
Energy Efficiency
Resource Optimization
SQS, PUNE
Submitted
for GOLD
LEED NC
Certification
SQS Software,
Hinjewadi Pune
Months
January 71.00% 90.50%
February 82.83% 94.17%
March 94.67% 98.00%
April 100.00% 100.00%
May 100.00% 100.00%
June 100.00% 100.00%
July 100.00% 100.00%
August 100.00% 100.00%
September 100.00% 99.83%
October 87.67% 95.83%
November 76.50% 92.17%
December 68.83% 89.17%
% of windows in
shade for
proposed louvers
% of windows in
shade for changed
louvers
Proposed Louver Design, prior to Energy Efficiency calculations
Proposed Louver Design, to provide better shading and thus
lower Energy Consumption
• High Performance
Glazing
• AAC Blocks
SQS Software,
Hinjewadi Pune
11%
33%
Internal Lighting Energy
Equipment
ParticularsDesign case
(MWh)
Base case
(MWh)
%
Improvement
Total Energy
Consumption384.74 494.84 22.25
22% Energy Savings achieved by :
Energy Efficiency Building
Envelope, including Orientation
and Shading
Distribution of Electricity Use in SQS Buildings, Pune
51%
3%
1%
Equipment Energy
Air Conditioning
Miscellaneous loads
External Lighting Energy
Efficient HVAC System – water
cooled chillers with screw
compressors
Auto controls for Lighting &
Efficient Lighting Fixtures
Thermax, Pune • Critical façade Insolation
studies conducted
• SE Façade was found to
be critical
• The Envelope Design of
the building is tested for
Energy Efficiency
Thermax,
Pune
Kumar Cerebrum IT Park,
Pune
Solar Analysis for
21 October
Grundfos Pumps,
Chennai
• Optimized Daylight
through measures such as:
• Light Shelves
• Sky light
• Shallow Building Form
Grundfos Pumps, Chennai
• Shallow Building Form
11x11 Sky Villas,
Chembur
Optimized Daylight
Design to comply
with the prescribed
Daylight FactorDaylight Factor
Avoid Glare
situations
Ensure Uniform
Daylight Distribution
Testing Alternative Window Designs
Acres School, Chembur
SMART CITIES
Themes for Sustainability in Cities
• Optimized Landuse Allocation
• Open Space to Built Space Ratio
• Conservation of Environmental Features like Rivers and Hills
• Green Buildings & Green Neighbourhoods• Green Buildings & Green Neighbourhoods
Pune DP 2007-2027
Sabarmati Riverfront Development,
Ahmedabad
Themes for Sustainability in Cities
• Alternative & Sustainable Transport Options, including
walkability
• Affordable Housing Options
• Equitable Distribution of Resources• Equitable Distribution of Resources
• Water & Energy Efficiency, share of Recycling and Renewables
BRTS,
Ahmedabad
BRTS, Pune
VK:e environmental
Our Shades of Green
Sustainability Initiatives
Research and knowledgebase
development on Sustainability
Action Research to guide
professionals in
implementing Sustainability measures
Developing publications and
documentation to outreach
on Sustainability
Handholding role for
policy makers to ensure sustainability decisions
Advocacy for
Sustainability with government authorities