Green technology aims to promote sustainability by meeting society's needs without compromising future generations' ability to meet their own needs. It seeks to curb global warming caused by human activities like fossil fuel use and deforestation by reducing carbon dioxide emissions. This can be achieved through improved energy efficiency, use of renewable energy sources like solar, wind and hydro power, and adoption of clean technologies. The presentation provided examples of green technologies like solar panels, wind turbines, and hydroelectric dams that generate renewable energy as well as more efficient gas turbines and green building designs.

1. GREEN
TECHNOLOGYPresentation at
SME Foundation
17 February 2014
Asma Huque
Managing Director,
Prokaushali Sangsad Ltd.
psldhaka2@gmail.com

2. Technology : Application of knowledge
for practical purposes
Purpose of Green Technology
is to promote Sustainability
What is Green Technology?
Part 1

3.  Meeting present needs of the society
without compromising the ability of
future generations to meet their own
needs.
 Curb the negative effects of human
activity Global Warming
Sustainable development
Part 1

4. What causes global warming?
Global warming is largely the result
of emissions of carbon dioxide and
other greenhouse gases from
human activities including
 industrial processes,
 fossil fuel combustion,
and changes in land use, such as
deforestation.Part 1

5. Part 1

6. What do we see happening?
 Melting away ice glaciers
 Less ice for the polar bears
 Drought in some countries
 High water and frequent storms
Part 1

7. Part 1

8. How to Reduce CO2 emission
 Improve Energy Efficiency
 Use Renewable Energy
 Replacement of Coal Power Plants
 Introduction of Clean Technologies
 Smart Building Designs (heating,
cooling, lighting)
 Alternative transport fuel ……….
Part 2

9. Energy Conservation/Efficiency
 Turn off the power while not using the
appliance
 Switch to more efficient lamps
 Keep idle computer on standby
 Lower the thermostat when leaving a room
Part 2

10. Energy Conservation/Efficiency
 Turn off the power supply when not in use
 Use high quality labeled products
 Recycle paper, plastic, glass and metal
 Turn off the gas when not in use
Part 2

11.  Solar- Photo voltaic, thermal
 Wind
 Hydro – power and electricity
 Bio gas – Heat, electricity
 Bio fuels – transport energy, fuel
 Wave energy
 Geo-thermal – Heat and electricity
Use renewable energy
Part 2

12. February 9, 2016Institute of Clean Energy Training and Research 12
Part 2

13. From Sun to Light Bulbs
Part 2

14. Advantages of solar PV
Advantages Limitations
• Majority manufactured from
Si - most abundant element in
the earth’s crust (28% by
weight)
• Environment friendly
• Decentralized installation
• Long life (25 years)
• Low maintenance
• Noise-free
• Clean
• Light weight
• Intermittent power
• Low-energy density
(So far maximum
commercial cell
efficiency is 18%)
• High start-up cost
(declining)
February 9, 2016
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Part 2

15. February 9, 2016
Solar Thermal (Collector)
Solar collector converts incidence e-m radiation into heat energy.
Solar water and space heating capacity upto 2009 is estimated as 180 gigawatts-thermal (GWth),
leading by china (70%) [166 sq. km of solar collector]
Evacuated tube solar collector
Evacuated tube solar collector
Flat plate solar collector
Institute of Clean Energy Training and Research 15
Part 2

16. February 9, 2016
Solar two facility,
Mojave Desert
CA, USA;
10 MW
Concentrating Solar Power (CSP),
Andasol Solar Power station,
Granada, Spain. 50 MW
Solar Thermal Electricity
Concentrated Solar Power (CSP)
Institute of Clean Energy Training and Research 16
Part 2

17. Solar Application(Grid-Tie)
February 9, 2016Institute of Clean Energy Training and Research 17
Part 2

18. Wind energy
 Old wind-mills would lift water
 Today electricity is generated from the wind
 It is free
 Wind power is available on land and over the sea
Part 2

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Part 2

20. February 9, 2016
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Part 2

21. February 9, 2016Institute of Clean Energy Training and Research 21
Part 2

22. Hydro power
 In the early days water wheels where used for grinding
 Hydro-power is from stored energy of water
 Large lakes make reservoirs
 Turbines make electricity from water
Part 2

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Part 2

24. Bio-fuel
 Energy stored in wood, trees and plants can
generate power
 Bio-fuel is used for power generation
 Bio-fuel is used for alternative gasoline
Part 2

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Part 2

26. February 9, 2016
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Part 2

27. February 9, 201627
Part 2
Supply of remote
technical
installations for
telecommunication
, road
signaling,
navigational aids
on coasts and
waterways,
data acquisition in
oilfields and from
remote areas ...
... ... ...

28. Energy Efficiency using Combined Cycle Gas
Turbine (CCGT)
A gas turbine followed by a steam turbine (using the
exhausted waste heat of gas turbine)
Efficiencies can go up to 60%
But, 52% is standard
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Part 2

29. Green Technologies
Relevant to SMEs
Energy
•Reducing
Green House
Gas effects
•Renewable
Energy
•Energy
Efficiency
Green
Buildings
•Design
•Products
Use of
products
•Reducing
•Reusing and
•Recycling
Part 2

30. Industries
Energy efficient
equipment
Reducing waste
and recycling
Improved
design, quality
control
Business
Using Energy
efficient
appliances
Using natural
resources
Reducing waste
and recycling
SMEF
Promote Green
Technologies
and Energy
efficiency
through own
use and
awareness
building
Green Activities Relevant to SMEs