“EMERGING GREEN

TECHNOLOGIES IN

CONSTRUTION INDUSTRY”

Green Building Technology

“Green Building Technology is the opportunity to

use resources more efficiently, while creating

healthier, more energy efficient and

environmental friendly buildings” (Woolley, et

al.,).

Why we need Green Technology?

Traditional building constructions are ;

• Large amount of demolition waste

• Carbon dioxide

• Consumed amount of energy

Green buildings may;

• Incorporate sustainable materials

• Create healthy indoor environments

• Reduces water usage

Green Designing

Green building technology uses

• Less energy

• Creates less waste

• Greenhouses gases

• Healthy living

Green technology can build a safer green

environment for future generation.

Technologies most common in Green

Building

• Rain Water Harvesting

• Bio gas production

• Natural Lighting and Ventilation

• Applied renewable energy

• Heat Recovery

• High efficiency HVAC

• Green Materials

Natural Lightning &

Ventilation

Natural Ventilation

There are two type of natural ventilation,

• Wind driven ventilation

• Stack Ventilation

Design strategies for natural

ventilation

• Increase air supply intake by ensuring

no outside obstruction nor inside

obstruction

•Rooms should have inlet and outlet

openings located in opposing

pressure zones.

Design strategies for natural

ventilation (con.td)

•Reduce the possibility of wall

warming

•Window area should not be excessive

and be protected by exterior shading

devices

Benefits of natural ventilation

•Safe healthy and comfortable

•Reduced construction cost

•Reduce operation cost

•Reduce the energy consumption

•Reduce noise impact

Day Lighting

• Its free

• Most difficult aspect is its controllability

• energy efficient and eco friendly

Rain Water Harvesting

What is rainwater harvesting?

A technique used for collecting,

storing, and using rainwater for

landscape irrigation and other

uses.

Objectives

• Increasing demand of water

• Reduce run off

• Avoid flooding of road

• Supplement domestic

requirement

• Reduce groundwater pollution

Advantages

•Simple construction

•Good maintenance

• Law environmental impact

•Reduce the water bill

•Reduce flooding, erosion,

contamination

Disadvantages

•High investment cost

•Usage and maintenance

• Limited supply

Bio Gas

Biogas Production

• It is a biofuel

•Production from organic

•Sustainable way to utilize the

energy content of manure

What is Bio Gas ?

• Renewable energy source

• Mixture of different gases produced by the

breakdown of organic matter in the

absence of oxygen.

•Basic Principle

Based on biological method

Produce in Anaerobe condition

•Factors affecting anaerobic

degradation

Temperature

Technical operating factors

Raw Material for bio

process

• Food waste

•Manure

•Plant bio mass

•Sewage sludge

Energy Use of Bio

Mass

•Electricity

•Vehicle fuel

•Heat

• fertilizer

Environment

friendly materials

Main challenge in construction

industry

Select materials that can reduce the

environmental issues.

Environment friendly materials

• Wool brick

• Hallow brick

• Fly ash

• Bamboo ply wood

• Eco brick

• Less volatile organic compounds paints

• Woven wool

Wool brick

Woven wool

Bamboo plywood

Eco brick

Hollow brick

Importance of “Fly ash”

• Waste product of coal burning power plants.

• Increases strength and durability of concrete

Source :

http://www.calrecycle.ca.gov/Greenbuilding/Materials

/

Green building materials

Energy

efficiency

Resource

efficiency

Water

conversation

Indoor air

quality

Affordability

• Low or non-toxic

• Minimal chemical

emissions

• Low – VOC

assembly

• Moisture resistant

• Healthfully

maintained

• Aesthetic quality

• Natural or

renewable

• Performance

• Low cost

• Locally available

• Durability

• Reusable or

recyclable

Conclusion

Objectives of green building

technologies

• Protect occupant health

• Improve productivity

• Resource efficiency

• Reduce overall impact to the environment

• Satisfying the quality of indoor spaces

Benefits of Green Building

Technologies

Environmental Benefits

•Reduce the impacts of natural

resource consumption

Benefits of Green Building

Technologies (con.td)

Economic Benefits

• Reduce operating cost

• Marketing advantages

• Increase building valuation

• Optimize life-cycle performance cost

Social Benefits

•Minimize strain on local infrastructure

and improve quality of life

•Enhance occupant comfort and

health

Considerations of green building

technologies

• Control erosion

• Reduce pollution and land development

impacts

• Provide good indoor spaces and outdoor

environment

• Control ventilation and lighting systems

START THINK IN GREEN