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

Thank you

+ 91 98220 13405

anaghap@gmail.com

aparanjape@vke-environmental.com