Green building

BY

WHAT IS GREEN BUILDING ?

• A green building is one which uses less water, optimises energy efficiency, conserves natural resources, generates less waste and provides healthier spaces for occupants, as compared to a conventional building.

NEED OF GREEN BUILDINGS• Buildings are responsible for

40% of worldwide energy flow and material use, conventional buildings have been identified as the largest source of green-house gas emissions, even more than that of the transport and industry sector.

• They affect air quality , health and contribute to climate change. During their life cycle, conventional buildings harm the environment in many ways.

MYTHS & REALITIES

• The biggest reality about Green Buildings is that they cost more to build and the biggest myth about green buildings is that they are economically unsustainable.

• Green Buildings may cost slightly more but the additional investment can usually be recovered in less than five years by power and water savings.

BENEFITS OF GREEN BUILDING

• Reduction in energy and water cost

• Improve air and water quality

• Enhance and protect biodiversity and ecosystems

• Improve overall quality of life

GREEN BUILDING TECHNIQUES

• Roof completely covered with vegetation

Benefits:• Reduce heating• Noise insulation• Create healthy

atmosphere• Durability of the roof

increased

Intensive roofs

Extensive roofs

WATER MANAGEMENT

• Rain water management (toilet , washing , ground water improvement)

• Waste water management (for gardening)

Ground water improvement Gardening

Water used for toilet & washing

USE OF GREEN ENERGY

Solar energy:•water heating•solar power•cooking •water treatment

A schematic of a solar water heating

Solar water disinfection in Indonesia

Nellis Solar Power Plant at Nellis Air Force Base in the USA. These panels track the sun in one axis

solar power

Wind energy:

•Wind energy is the kinetic energy of the air in motion.Biogas energy:•covering household or institutional energy demand and generates savings or income•replacing chemical fertilizer and improving soil fertility by application of bio-slurry•reducing ground and surface water pollution•reducing greenhouse gas emissions

Sketch of biodigester replacing a septic tank

• Wastewater as well as kitchen and garden waste enter the digester and are broken down to biogas and fertile water

Advantages:• No more emptying of septic tank. Reuse of all water in the

garden.Less cost on cooking energy

Practical application of wind & solar energy

• The Noyyal Life Centre, which houses Siruthuli's office in Coimbatore, is a green building that tapped wind and solar energy. All its energy needs for running of its office of about 3.5 kw is supplied by a 2.5 kw wind turbine and 1 kw solar panel.

Practical application of Biogas energy @ KSRCT

Existing bio-gas plant:

• The production of biogas in this plant is mainly from cow dung & used as a fuel for cooking in k.s.r ladies hostel• The amount which can be saved per month is about Rs.42000; apart from this the bio fuel produced in this plant

can run a 15 KVA generator

• The main aim of construction of this bio gas plant is to collect the digestible food waste as well as the human excreta from the two ladies hostel consisting of 1300 students. Thus the waste collected from these ladies hostel is dumped into the plant and bio gas is produced.

Bio gas plant under construction:

GREEN BUILDING CERTIFICATION

Green certifications in india:There are two certifications currently available in India. They are:•LEED INDIA along with other IGBC rating systems like IGBC Green Homes, IGBC Green Factory Building and IGBC Green Townships. These are all administered by the Indian Green Building Council based in Hyderabad. (http://www.igbc.in)•Green Rating for Integrated Habitat Assessment, or GRIHA(http://www.grihaindia.org/)

Getting green certificate:• Register with IGBC (Indian Green Building Council) or

GRIHA (Green Rating for Integrated Habitat Assessment)

• This process should be initiated in project planning stage well before the design was initiated.

• Credit Interpretations• Certification and Documentation • Certification Award • Appeal• Fee Summaryrefer:(http://www.igbc.in/site/igbc/testigbc.jsp?

desc=22968&event=22869)

LEED (Leadership in Energy and Environmental Design) certifications

sno category points

1 Sustainable Sites 14

2 Water Efficiency 5

3 Energy and Atmosphere 17

4 Materials and Resources 13

5 Indoor Environmental Quality

15

6 Innovation & Design Process

5

Total Possible Points 69

Score Rating

26-32 Certified

33-38 Silver

38-51 Gold

51-69 Platinum

Division of points under LEED: LEED Certificates:

Certification is provided as per the scores obtained

Points that can be scored by fulfilling all of the credits in each of the categories

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