Green initiatives and energy efficiency

ENERGY CONSERVATION
AND GREEN INTIATIVES
KANNAN S (1120100299)
G VAMSI KRISHNA (1120100316)
R NIVEDITA (1120100327)
S SRAVYA PALLAVI (1120100328)

NEED FOR ENERGY CONSERVATION
• Ensuring uninterrupted supply of energy to support
economic and commercial activities is essential for
sustainable economic growth.
• In true sense, sustainable development should be
widely spread in all three dimensions - social,
economic, and environmental.
• For all these areas, energy is perhaps the most
important aspect. The production and the
consumption patterns at the local and the global
scale.
• The scenario of power generation, consumption
and forecasts power requirements up to 13th five
year plan.
• While it also stressing on energy and its close
linkages with environment, poverty and
sustainability.
• This also describes the strategies to meet the
necessary demand of power and steps taken to
achieve sustainability.

ENERGY DEMAND
CUMMULATIVE ENERGY DEMAND (CED)
Cumulative energy demand (CED) is the entire primary energy demand over the whole life cycle of a product or
a service. It is a good indicator to access the ecological balance of a building because it is the sum of energy
used both in producing materials and components, as well as in their operation over their lifespan.
PARAMETERS CONSIDERED
 Amount of material used.
 Energy used in processing of the materials.
 Service life of the material.
 Energy required in life cycle of the material.
 Emissions during production, use and disposal.
CED = CEDP + CEDU + CEDD.
LIFE CYCLE ASSESMENT (LCA)
Life-cycle assessment (LCA) is a technique to assess environmental impacts associated with all the stages of a
product's life from raw material extraction through materials processing, manufacture, distribution, use, repair
and maintenance, and disposal or recycling.

GREEN BUILDING
Buildings have major environmental impact over their entire life time.
A green building depletes the natural resources to the minimum during its construction and operation.
It maximizes the use of efficient building materials and construction practices.
The aim of a green building design is to minimize the demand on non-renewable resources, maximize
the utilization efficiency of these resources, when in use, and maximize the reuse, recycling, and utilization
of renewable resources.
Aspects integrated in green building
 Vernacular principles.
 Building system design ((HVAC) heating ventilation and air conditioning, lighting, electrical, and water heating)
Integration of renewable energy sources to generate energy onsite.
 Water and waste management.
 Selection of ecologically sustainable materials (with high recycled content, rapidly renewable resources with low
emission potential, etc.).
 Indoor environmental quality (maintain indoor thermal and visual comfort, and air quality).

MISCONCEPTION OF GREEN BUILDING
GREEN BUILDINGS ARE EXPENSIVE
They use less materials and are built better, some may be built at higher cost but save energy
consumption to huge extent
TO BE GREEN, BUILDINGS NEED SOLAR ENERGY
Approach of design – passive and active design
Passive simply makes building energy efficient, active adding electrical and mechanical devices.
GREEN ARCHITECTURE are only about landscaping
GOING GREEN IS SUPERFICIAL
GREEN BUILDING - unattractive
GREEN ARCHITECTURE – essentially about green materials
GREEN BUILDING –green buildings products are hard to find.
GREEN BUILDING –uses traditional tool and techniques.

GREEN INITIATIVES
VARIOUS GREEN BUILDING RATING SYSTEMS

GRIHA
(GREEN RATING FOR INTEGRATED HOUSING ASSESSMENT)
 GRIHA is a Sanskrit word, literally meaning ‘A house as containing several rooms’.
Encourages optimization of building design to reduce conventional energy demand and further optimize
energy performance of the building within specified comfort limits.
Emphasizing national environmental concerns, regional climatic conditions, and indigenous solutions.
To address and assess non-air conditioned or partially air conditioned buildings.
Acts as a tool to facilitate implementation of the relevant building codes and standards
Helps to design green buildings and, in turn, helps evaluate the ‘greenness’ of buildings.
OBJECTIVES
 Endorsed by the Ministry of New and Renewable Energy, Government of India and
developed by as of November 1, 2007

• Reduced energy consumption without sacrificing the comfort levels.
• Reduced destruction of natural areas, habitats, and biodiversity, and reduced soil loss from erosion, etc.
• Reduced air and water pollution (with direct health benefits).
• Reduced water consumption.
• Limited waste generation due to recycling and reuse.
• Reduced pollution loads.
• Increased user productivity.
• Enhanced image and marketability.
Some of the benefits of a green design to a building owner,
user, and the society as a WHOLE
GRIHA
The basic features
Pre-construction stage (intra- and inter-site issues)
Building planning and construction stages
(issues of resource conservation and reduction in resource demand, resource utilization efficiency, resource recovery and
reuse, and provisions for occupant health and well being)
Building operation and maintenance stage
(issues of operation and maintenance of building systems and processes, monitoring and recording of consumption, and
occupant health and well being, and also issues that affect the global and local environment).

GRIHA - CRITERIA
Criterion 1 Site Selection
Criterion 2 Preserve and protect the landscape during construction/compensatory
depository forestation.
Criterion 4 Design to include existing site features.
Criterion 3 Soil conservation (till post-construction).
Criterion 5 Reduce hard paving on-site and /or provide shaded hard- paved surfaces.
Criterion 6 Enhance outdoor lighting system efficiency.
Criterion 7 Plan utilities efficiently and optimize on-site circulation efficiency.
Criterion 8 Provide at least, the minimum level of sanitation/safety facilities.
Criterion 9 Reduce air pollution during construction.
.
Site planning
HARD PAVING
SHADED PAVINGPERMEABLE PAVING

GRIHA
Building planning and construction stage
Conservation and efficient utilization of resources
Criterion 10 Reduce landscape water requirement.
Criterion 11 Reduce building water use.
Criterion 12 Efficient water use during construction.
Criterion 13 Optimize building design to reduce the conventional energy demand.
Criterion 14 Optimize the energy performance of the building within specified
comfort limits.
Criterion 15 Utilization of fly ash in the building structure.
Criterion 16 Reduce volume, weight, and time of construction by
adopting an efficient technology (e.g. pre-cast systems, ready-mix concrete, etc.).
Criterion 17 Use low-energy material in the interiors.
Criterion 18 Renewable energy utilization.
Criterion 19 Renewable energy - based hot- water system.
Fluorescent lamps

GRIHA
Waste managementRecycle, recharge, and reuse of water
Criterion 20 Waste- water treatment
Criterion 21 Water recycle and reuse (including rainwater).
Criterion 22 To minimize waste generation, streamline
waste segregation.
Criterion 23 Reduction in waste during construction.
Criterion 24 Efficient waste segregation.
Criterion 25 Storage and disposal of waste.
Criterion 26 Resource recovery from waste.
Health and well-being
RAIN WATER HARVESTING
Criterion 27 Minimize ozone depleting substances.
Criterion 28 Ensure water quality.
Criterion 29 Acceptable outdoor and indoor noise levels.
Criterion 30 Tobacco and smoke control.
Criterion 31 Universal accessibility.(universal design).

CONTEXT
NELLORE TROPICAL MARITIME CLIMATE
• HOT HUMID SUMMERS.(LONG)
• MILD WINTERS.(SHORT)
COASTAL CLIMATE SEE BREEZES
RENDERS CLIMATE IN BOTH SUMMERS AD WINTERS.
RAIN FALL
MOSTLY NORTH EAST MANSOON
WINTER – JANUARY AND FEBRUARY
SUMMER – MARCH TO MAY
SOUTH WEST MANSOONS – JUNE TO SEPTEMBER
NORTH EAST MANSOONS – OCTOBER TO DECEMBER
MAJOR CONSTRAINTS
HEAT
HUMIDITY
CHARACTERISTICS OF CLIMATE ARCHITECTURE
HEAVY STONE BUILDINGS
Stable indoor climates
SHADED OR SMALL WINDOWS
LOGGIAS
POTICOS
PATIOS AND
BALCONIES as buffer

ARCHITECTURAL POTENTIAL OF CLIMATE
VERNACULAR CONCEPTS MECHANISMS DESIGN
LEARNING FROM TRADITIONAL ARCHITECTURE
Traditional architecture is based on and adapted to local conditions.
Climatic adaption is practically synonymous with energy conservation.
Contemporary architecture
Climate architecture
focused on sustainability in terms of minimizing
energy consumption.
Optimum utilization and adaption of
external climate.
Climate – earths interactive systems
Heat
Humidity
Air and light
HUMAN COMFORT PRICIPLES DERIVED
RESOURCES AND TECHNOLOGY
VERNACULAR
ARCHITECTURE

VERNACULAR APPROACH
DESIGN STARTEGIES
ZONE DIVISION USAGE OF HEAVY AND LIGHT MATERIALS IN THE ZONE OF REQUIRED QUALITY OF SPACE.
HEAVY MATERIALS CONDUCT MORE THAN LIGHTER.
HUGE THERMAL MASS – LATE CONDUCTION
ZONE 1 ZONE 2
ZONE 3LIGHT MATERIAL
REFLECTING
LIGHT
SEMI OPEN MODERATE - LIVING
BED ROOM
HEAVY THERMAL MASS
OPERABLE
PARTITION
HUMIDITY – LARGE, LIGHT, SPACIOUS ROOMS
More air changes per hour.
HYGROSCOPIC/POROUS MATERIAL
Indoor – outdoor quality through
absorption and evaporation.

VERNACULAR APPROACH - FEASIBILITY
DECIDOUS TREES – WINTER AND SUMMER
Revival of regional architecture – post modern metaphysical materialism
Traditional methods – modern technology
General principles
Economic viability and efficient use of space

CASE STUDY - MONAMA
LOCATION : Hyderabad, India
CLIMATE : Inland composite
construction area 234.00 m2

CASE STUDIES
Features
• Use of cavity walls
• high thermal mass
• Wall orientation and form
• windows oriented to 195°such that
pressure differences, in combination
with the prevailing wind direction, may
be utilized for continuous ventilation
• ventilation shaft
• exhausts hot air, located in the central
part of the house
• Buried pipes and evaporative cooling
• The system provides cooling by
consuming just the amount of electricity
necessary for the operation of the fans
• photovoltaic system
• Solar hot water collector
Ventilation paths through the house
Evaporative cooling system

CASE STUDIES
REDEVELOPED PROPERTY
LOCATION : Civil lines, New Delhi, India.
CLIMATE : Composite
Features
• Wind driven evaporative cooling
• A vertical screen tower is built on the west
wall. This tower houses Khus evaporative
pads on its outer surface, fed by a water
pump
• Courtyard roof
• Comprising of quilts and bamboo
• Shading from outside / insulation from
inside
• Roof evaporative cooling
• Direct radiation
• Insulation materials
• broken marble mosaic
• polyurethane board insulation above the
concrete slab
Façade of Courtyard House
West wall "Khus" cooling tower

CONTEMPERORY SUSTAINABILITY MEASURES
Opportunities to conserve energy
 Reducing demand
 Increasing the efficiency of devices
 Recovering otherwise lost heat
Reducing transmission losses
 Improving the building’s insulation
 Using active insulation (transparent
insulation materials or TIM)
 Interrupting the thermal bridges
across the construction.
 Making the building form more
compact
Reducing energy needed to heat
water
 Heat production from
renewable source (heat pump,
biomass or solar)
 Use of heat recovery system.

WATER AND WASTE MANAGMENT
Reclaimed water
 It is waste water effluent or sewage that has
been treated according to high standards.
 Its treatment takes place offsite and is
delivered to a facility.
 Reclaimed are mostly used for landscaping.
Grey water
 Grey water is product of domestic water use
such as shower, washing machine and sink.
 Grey water collected from a building is
reused in same building.

WATER AND WASTE MANAGMENT
Water reduction
 Use a high efficiency micro irrigation system.
 Replace portable water with captured rainwater, recycled
water or treated water.
 Use water treated and conveyed by a public agency.
 Apply xeriscaping principles.
Innovative wastewater technology
 Ultra high efficiency toilet and efficient retrofits.
 Efficient showerheads and retrofits.
 Water free and high efficient urinals.
 Other ultra-low water consumption products.

LANDSCAPING
Xeriscaping
• Xeriscaping is landscaping reduces or
eliminates the need for supplemental water
from irrigation.
• It is promoted in regions that do not have
easily accessible, plentiful, or reliable
supplies of fresh water, and is gaining
acceptance in other areas as well.
• Xeriscaping may be an alternative to various
types of traditional gardening.
• The specific plants used in xeriscaping
depend upon the climate.
• The emphasis in xeriscaping is on selection of
plants for water conservation, not necessarily
selecting native plants.

LANDSCAPING
Xeriscaping
Advantages
• Lowered consumption of water.
• Makes more water available for other domestic and
community uses and the environment.
• Reduce Maintenance.
• Xeriscape plants in appropriate planting design, and soil
grading and mulching.
• Less cost to maintain.
• Reduced waste and pollution.
Disadvantages
• It may not meet modern aesthetics.
• Reduced areas for sports.
• Certain plants such as cacti and agave contain
thorns.
• Initial Cost.

LANDSCAPING
Xeriscaping
Evergreen Trees
1. Acacia spp.
2. Agonis flexuosa
3. Callistemon viminalis
4. Calocedrus decurrens
5. Cupressus spp.
6. Eucalyptus spp
7. Juniperus spp.
8. Olea europea
9. Pinus spp.
10. Schinus molle
Deciduous Trees
1. Brachychiton populenus
2. Cercidium spp.
3. Cercis occidentalis
4. Chilopsis linearis cvs
5. Lagerstroemia indica
6. Prosopis chilensis
7. Puncia granatum cvs
8. Quercus spp.
9. Robinia ambigua 'Idahoensis'
10. Vitex agnus-castus
Native Shrubs
1. Arctostaphylos spp.
2. Artemisia arborescens
3. Ceanothus spp.
4. Encelia californica
5. Fremontadendron californicum
6. Heteromeles arbutifolia
7. Lavatera assurgentiflora
8. Leucophyllum frutescens
9. Mahonia aquifolium
10. Tecoma stans

NATURAL RESOURCES - SOLAR
Photovoltaic:
Photovoltaic (PV) is a method of converting solar
energy into direct current electricity using semiconducting
materials that exhibit the photovoltaic effect.
How much energy does one panel produces?
The unit of electrical energy consumed is
generally measured in kilowatt-hours (kWh). If
an array of solar panels rated at 1000 Wh
produce electricity for 1 hour under good
sunshine, they have produced 1 kWh or 1 unit
of electricity.
•Choose building orientation to maximize or
minimize exposure to solar radiation
•Through site analysis ensure that there is
no overshadowing
•Provide reflective surfaces in front of the
building to increase solar gain

•Under clear skies and good sunshine each
square meter is receiving about 1000 watts of
solar energy. At typical 15% panel efficiency, a 1
sq m area will generate 150 watts of power. For 1
kW power output about 7 sq m area will be
required.
How much space is required to install
1 kW solar panels?
•In India, ideal orientation for solar panels is slight
tilt towards true south; in South India placing panels
flat (horizontal) will also do.
A photovoltaic system employs solar panels composed of a
number of solar cells to supply usable solar power.

POWER CONSUMPTION IN RESIDENCE:

http://223.31.33.76/public/spin-grid/public/Grid/financial_tool/1SPIN:

CASE STUDIESCASE STUDIES
Rabi Rashmi Abasan (solar ray-based dwelling)
 India’s first completely solar-powered
housing complex using building-
integrated photovoltaic (BIPV)
 Location:1.76-acre plot in New Town,
Kolkata
 25 bungalows and a community centre
 Power generation: 58 KW (2KW from each
house)
 Designed, engineered and built by West
Bengal Renewable Energy Development
Agency (WBREDA) and Bengal DCL

CASE STUDIES
Features
• passive solar architecture
• cool during summer
• natural light
• solar chimney for air circulation
• Insulated walls and windows on south,
west, and east-side walls
• active solar energy features
• solar water heating system
• sustainable features
• garbage management system
• battery operated pick-up vans
• solar street lights
• swimming pool with solar water heating

CASE STUDIES
PV grid system
• Supplies energy to loads at the point
of generation
• Exports power when there is excess
energy
• Allows the import of energy if there
is a shortfall
Capacity 2 kW
Capital cost Rs. 1.7 lakh/kW for
PV and Rs. 40,000
for battery &
inverter
Useful life 25 years
Net cost of roof top
PV
Rs. 8.15/kWh
Savings due to BIPV Rs. 5/kWh
(assuming total
monthly
consumption of
household of 1000
kWh, energy
saving of 25% on
monthly
consumption and
residential
electricity tariff of
Rs. 5/kWh)
Net cost of BIPV Rs. 3.15/kW
Economy of BIPV

COMPONENETS
GREEN WALLS:
• Living walls or green walls are self sufficient vertical gardens
that are attached to the exterior or interior of a building.
• They differ from green façades (e.g. ivy walls) in that the
plants root in a structural support which is fastened to the
wall itself.
• The plants receive water and nutrients from within the
vertical support instead of from the ground.

•System consists of a frame, waterproof
panels, an automatic irrigation system, special
materials, lights when needed and of course
plants.
•The frame is built in front of a pre existing
wall and attached at various points; there is
no damage done to the building.
•Waterproof panels are mounted to the
frame; these are rigid and provide structural
support.
•There is a layer of air between the building
and the panels which enables the building to
‘breath’.
•This adds beneficial insulating properties and
acts like rain-screening to protect the building
envelop.
COMPONENETS

Pro Wall
System Green Walls have the ability to cut electricity bills up to
20% and also shield the building from sun, rain and
thermal fluctuations.
Versa Wall
System
Basic Wall
System
Research in Singapore has demonstrated that green roofs
on commercial buildings can reduce annual energy
consumption by up to 14.5%.
Studies in Rio de Janeiro have demonstrated that the
underside of green roof systems are significantly cooler
(up to 12degree C) than plain concrete roofs
The Cost of Vertical Gardens varies between
Rs.650 per sq ft to Rs.1600 per Sq ft depending
upon a number of Factors such as the System you
choose , Structure , Design ,Plants , Irrigation
System ,Location etc.
http://www.sanjaynursery.com/#!vertical-garden/c1tr2
http://riorenewables.com/efficient-design/green-roofs-
walls

THE ADVANTAGES:
A Work of Art – gardens that hang vertically are fun and interesting to look at.
They can double as artwork or home decor on a bare wall.
More Options for Those with Limited Space –homeowners can display plants
where they might otherwise not have the space. In this case, vertical gardening
provides an of option if they want to grow food.
Reduce Clutter – Vertical gardens are conveniently out of the way, which also
results in a cleaner, more organized look. Some minimalists prefer vertical
gardens for this reason.
Cleaner Air – Indoor plants have a tendency to collect and show dust, but
when vertically grown, they collect and show less dust – but they are also
easier to clean.

THE DRAWBACKS:
Limited Growing Space – Vertical planters generally don’t
provide a whole lot of space for roots to grow. Unless the
planter is a heavy-duty structure, larger plants will not be
able to be supported..
Dries Out Quickly – Some planters that receive a lot of
sun can dry out easily, weakening or killing plants.
If you want to make a gutter garden to grow herbs and
lettuces in a sunny space, use a white plastic gutter that
will help reflect light and heat – instead of a dark grey
metal gutter that will heat up faster.

ROOFING
Choosing roofing material
 Ability to resist heat flow into interiors.
 Capacity to reflect sunlight and reemit surface heat.
 Ability to reduce ambient roof air temperatures.
 Capacity of being reusable.
 Fire resistant that meet fire code requirement.
 Should be free of halogens.
Choice for roofing material
 Clay or cement tile
 Recycled rubber or plastic
 Composition shingle
 Metal
 Built up roof
 Green roof

ROOFING
GREEN ROOF
STRUCTURAL
SUPPORT
ROOFING
MEMBRANE
MEMBRANE
PROTECTECTION
ROOT BARRIER
DRAINAGE
MEDIUM
AERATION

ROOFING
Benefits
• Overall building energy costs can be reduced due to the
green roofs’ natural thermal insulation properties.
• Acoustic insulation properties also exist with green roofs,
and results in noise reduction.
• When green roofs are applied, previously wasted rooftop
space is turned into usable space.
• Most of the green roofing companies utilize at least some
recycled materials in their various product components.
• A new market for green roofs and services could create
jobs for many people.

ROOFING
Key factors influencing green roof capital costs
• Size and complexity of the installation
• Building height
• Use of special features for enhancing aesthetics and safety of accessible green roofs
• Local availability of materials
• Availability of labor-reducing technologies
• Abundance of experienced local labor
• Market competition
• Availability of ready-made modular or complete systems
• Need for structural modifications to increase load-bearing capacity on the roof

ROOFING
Building Structural Modification
• Green roof weights ranging from 40 to 250 Kg/sq. m , with
several systems weighing less than 150 Kg/sq. m.
• The larger spans between columns mean that supporting
additional weight on the roof is a greater challenge unless the
structural roof framing is strong and rigid.
• Accommodating a green roof on these buildings would
normally require structural support.
• Less expensive strategies to avoid or minimize building
structural modifications are mainly targeted towards
transferring weight or designing for heavy garden elements
over load bearing members.

HIGH PERFORMANCE WINDOW
• High-performance windows can greatly reduce energy
consumption and, thus, heating and cooling costs.
• The most energy efficient window models can save
homeowners up to 16% on their heating costs and up
to 23% on their cooling costs.
• Additional benefits of this evolving technology include
better air quality in homes, reduced condensation, and
the ability to filter 98% of ultraviolet rays.
High-Performance Window Value Chain
MATERIAL COMPONENTS
FINISHED
PRODUCTS
END USE

GAS
FILLING
INSULATING
SPACER
LOW E
FLAT
GLASS
PANES
FRAME
• FIBER GLASS
• VINYL
• LUMBER
• ALUMINIUM
• POLYSTYRENE FOAM
• STEEL
• SILICA
• NICKEL
• TITANIUM DIOXIDE
• CHROMIUM NITRATE
• KRYPTON

Low E- coating helps to keep heat in during
winter and heat out during summer
Aluminum spacers have been a weak thermal
link in window unit.
Dense foam can improve the energy
performance of E- coating.

Potential risks associated with highly glazed façade
 Increased sun penetration and excessive brightness.
 Adequate tools may not always be available.
 Greater cooling loads and cooling energy.
 Increased cost of automated shading systems and
purchasing lighting controls.
 Technical difficulty and the high cost of reliability.
 Uncertainty of occupant behavior.

SUSTAINABILITY MEASURES
Reducing ventilation losses
 Ensure no spaces are excessively ventilated.
 Reduce the fan power needed to supply required air
volume.
 Duct lengths and layout should be optimized to reduce
hydraulic pressure drops.
 Use of more efficient ventilation system.
 An air tight building is essential in high performance
houses.
Ventilation improvement
 Buildings should be well ventilated preferably be narrow.
 Use of mechanical cooling is recommended in hot and
humid climate.
 Occupants should be able to operate window openings.
 Use of fan assisted cooling strategies.
 Decide whether open or closed building approach.
 Maximize wind induced ventilation.
 Provide ventilation to attic spaces.

Shades and shade control
 Exterior shading devices have been found to
reduce heat gain and diffuse natural lighting.
 Shade control device is based on preference of
natural light to electric light.
 Goal of shading device is to maximise natural
lighting within a glare free environment, avoiding
solar radiation and sunlight penetration.
GLARE CONTROL
Curtains
 Curtains are effective in reducing glare and daylight
level.
 Short curtains on the upper part of window impede
daylight from projecting into house.
 Side curtain tracks should extend beyond the
window.

Low emitting materials
 Avoid materials and products that generate substantial amount of
pollution during manufacturing
 Specify salvaged building material.
 Avoid material made from toxin or hazardous constituents
 Specify material with low embodied energy.
 Help regional economy and environment by adopting locally available
material.
 Use wood and wood based materials that meet MOEF principles and
GRIHA guidelines.
Fly ash
Aerocon panels
Ferro cement
Concrete hollow blocks
Pre fabricated structures
EFFICIENT HOUSING MATERIALS

GREEN MATERIALS
Natural materials – locally available
Earthen building materials - compressed mud blocks, bricks
 Abundance of raw material- earth
 Durable and require low maintenance.
 Eco friendly with minimum environmental friendly.
 High thermal insulation.
 High sound insulation.
 No waste generated during construction.
 Biodegradable or reusable.
 Construction is inexpensive and simple.
 Highly resistant to fire.
 Not susceptible to insects or rodents.
Cuddapah stone
Tandur stone
Cuddapah stone
Tandur stone
Different colors

LOW COST HOUSING MATERIALS
Innovative use of secondary products
Material Source Application
Rice husk Rice mills Fibrous building panels, acid proof
cement
Coconut husk Coir fiber industry Building boards, roofing sheets,
panels, coir reinforced composite
boards
Groundnut shell Mills Chip boards, roofing sheets
Jute fiber Jute industry Door shutters, chip boards, roofing
sheets
Saw mill waste Saw mills Insulation boards, cement bonded
wooden chips.

INDIRA PARYAVARAN BHAVAN
India’s first net zero energy building
• solar passive design
• Energy efficient building materials
• GRIHA 5-star rating
Features
• 75 per cent of natural daylight
• Total energy savings of about 40 per cent achieved through the adoption of
chilled beam system of air-conditioning
• Use of convection currents rather than airflow through air handling units
• Use of green materials
• fly ash bricks
• high reflectance terrace tiles
• rock wool insulation
• Calcium Silicate ceiling tiles with high recyclable content
• grass paver blocks on pavements and road
• UPVC windows with sealed double glass
• Renewable bamboo jute composite material for doorframes and
shutters
• Reduction in water consumption
• rainwater harvesting
• low-discharge water fixtures
• recycling of waste water through sewage treatment plant
• use of plants with low water demand in landscaping
• Geothermal cooling for HVAC system that transfers heat to or from the
ground

Green materials
Resources available
Construction techniques
Green materials
Imported
Intervening technologies
Initial cost – labor cost FEASIBILITYEfficient systems
AFFORDABLE HOUSING SCENARIO
PUBLIC PRIVATE PARTNERSHIP 50 – 50 PERCENT
SUSTAINBILITY – ECONIMIC
RESOURCE
ENERGY
SOCIAL
FEASIBLE PROCESS INVOLVED IN ACHIEVING TOTAL SUSTAINABILTY – GREEN HOUSING

RISK ASSOCIATED WITH GREEN BUILDINGS
• Higher Than Anticipated Operating Expenses—Excessive Energy Use, Water
Use, and Maintenance.
• Establishing Conflicting Standards—Creating Unachievable Project
Requirements.
• Construction Schedule and Cost Impacts Associated with Delivering a
Sustainable Building.
• Failure to Meet Green Code or Green Certification Requirements—During
the Original Design Phase, Due to End User Design Changes, or During
Construction.
• Employing Materials and Equipment with Reduced Life Cycles or
Immediate Aesthetic or Performance Failures.
• Damage to Environmental and Professional Reputation.

REFERENCES
• GREEN BUILDING DESIGN AND CONSTRUCTION
-Sam Kubba
• SUSTAINABLE SOLAR HOUSING
-Robert hasting and Maria Wall
• GREEN BUILDING DESIGN AND CONSTRUCTION
-Dr. Peter Gevorkian
• DOMESTIC VENTILATION
-Roger Edward
• ENVIRONMENT AND URBANIZATION ASIA
Vol. 5 Vol.1 march 2014
• EMARALD ARCHITECTURE
-Migrea Hill Publication.
• ECOHOUSE
-Sue Roaf
• CLIMATE AND ARCHITECTURE
-Torben Dahl

Green initiatives and energy efficiency

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