Emerging Green Building Technologies in Construction Industry- Level 1(2016)-Communication...
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Transcript of Emerging Green Building Technologies in Construction Industry- Level 1(2016)-Communication...
“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