A green building case study

1. I N F I N I T Y
BENCHMARK
Geetika Singla
K O L K A T A

3. Last certified on: August 07, 2009
Certification level: Platinum

5. Building Envelope
• External walls and roof have high insulation property
• External walls made of brick wall block with 4 inch
expanded polystyrene insulation ACP cladding
• U-factor 0.073 Btu/hr.ft2
• Roof has under deck insulation with 30 mm of rigid
polyurethane foam
• Terrace garden on roof top reduces heat island effect
• Use of overhangs on selected facades reduces the direct
solar gains through glazing.
• High performance glazing catering to 36 of total building
facade

6. High Performance Glazing
• Double glazed glass units increase energy efficiency of
building
• Less heat ingress into the building
• Better transmission of day light into occupied spaces
• Provides external connectivity to occupants
• Use of overhangs on selected facades reduced direct
solar gain through glazing
• Glass characteristics
1. U Value 2.64 W/m2 K
2. Solar heat gain coefficient 0.2
3. Visual Light transmittance-0.23

8. Eco-Friendly Energy Efficient Equipment
• Consume 25% less energy
• CFC free refrigerant to avoid ozone depletion
• HVAC equipment has been designed with no
compromise on human comfort levels
• Energy efficient water cooled chillers with CoP value of
6.3
• Primary secondary chilled water pumps with variable
speed drive to economize pump energy

9. Building Management System
• Optimized energy consumption resulting in operational energy
savings of 15-20%
• Typical examples of energy saving through BMS integration
• Night time purging to cool the building
• Chiller management
• Controlling AHU fan speed and chilled water pumps based on
heat loads
• Temperature, humidity and lighting control
• Monitors and controls indoor comfort condition
• Automatically monitors amount of fresh air that enters the
spaces
• Can also track occupancy status of each zone and accordingly
adjust fresh air flow
• Provides alarm systems so as to take corrective actions

10. Efficient Lighting
• Use of energy efficient fluorescent lamps (T5s) and
luminaries with high coefficient of utilization
• The interior lighting designed with overall lighting
power density less than 1.0 Watts per sq ft
• Minimized light trespass from the site to increase night
sky access and improve night time visibility
• External lighting designed to reduce the development
impact on nocturnal environments

11. Eco-Friendly Vehicle Charging
• Provision of 13 electric car charging points
• Reduces pollution and land development impacts from
automobile use
• Cost effective and environment friendly means for
commuting to work

13. Water Efficient Fixtures
• Consume 40% less water
• Water efficient flow flush fixtures are used in the entire
building
• Reduces burden on municipal water supply and waste
water systems
• Reuse of storm water and treated grey water for non-
potable applications such as toilet, flushing and
irrigation

14. Waste Collection Segregation
• Reduction of building waste diversion to landfills
• An easily accessible area in each floor is dedicated to the
collection and storage of non hazardous materials
• Separation of dry waste and wet waste materials at
source
• Segregation and storage of dry wastes such as paper,
cardboard, glass, plastics and metals to facilitate
recycling

16. Indoor Environmental Quality
• Occupants provided with superior indoor air quality
through energy efficient HVAC equipment
• Air conditioned spaces are maintained at 24 degree C
and 50 - 60 relative humidity through out the operation
of building
• CO2 levels and fresh air quantities are continuously
monitored and maintained at a pre-determined value to
enhance the productivity of the occupants
• Adhesives, sealants, paints, resins used in the common
areas have low volatile organic compound (VOC) content
• Day lighting views enhance productivity of occupants

18. Building Materials
• Use of construction materials having 20% recycled
content and 20% locally available
• Use of recycled materials reduced the impacts resulting
from extraction and processing of new virgin materials
• Illustrative list of materials with recycled content
1. False ceiling material made of industrial waste
- gypsum
2. Door panels made of bagasse
3. Aluminium door and window frames have high
recycled Aluminium content
• Use of 100% FSC certified wood for all wooden
components