Green technology

GREEN TECHNOLOG

YPresentation at

SME Foundation17 February 2014

Asma HuqueManaging Director,

Prokaushali Sangsad [email protected]

Technology : Application of knowledge for practical purposes

Purpose of Green Technology is to

promote Sustainability

What is Green Technology?

Part 1

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

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

Part 1

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

Part 1

How to Reduce CO2 emission

Improve Energy EfficiencyUse Renewable EnergyReplacement of Coal Power Plants Introduction of Clean Technologies

Smart Building Designs (heating, cooling, lighting)

Alternative transport fuel ……….

Part 2

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 roomPart 2

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

Solar- Photo voltaic, thermalWindHydro – power and electricityBio gas – Heat, electricityBio fuels – transport energy, fuelWave energyGeo-thermal – Heat and electricity

Use renewable energy

Part 2

May 1, 2023Institute of Clean Energy Training and Research 12Part 2

From Sun to Light Bulbs

Part 2

May 1, 202314

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)

Institute of Clean Energy Training and ResearchPart 2

May 1, 2023

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 15Part 2

Institute of Clean Energy Training and Research 16 May 1, 2023

Solar two facility, Mojave DesertCA, USA;10 MW

Concentrating Solar Power (CSP), Andasol Solar Power station, Granada, Spain. 50 MW

Solar Thermal ElectricityConcentrated Solar Power (CSP)

Part 2

http://www.solarbuzz.com/ModulePrices.htm

Solar Application(Grid-Tie)


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 seaPart 2

May 1, 202319Institute of Clean Energy Training and ResearchPart 2



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


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



May 1, 202327Part 2

Supply of remote technicalinstallations fortelecommunication, roadsignaling, navigational aidson coasts and waterways,data acquisition in oilfields and from remote areas ... ... ... ...

May 1, 202328

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

Institute of Clean Energy Training and ResearchPart 2

Green Technologies Relevant to SMEs

Energy• Reducing

Green House Gas effects• Renewabl

e Energy• Energy

Efficiency

Green Buildings• Design• Products

Use of products

•Reducing•Reusing and•Recycling

Part 2

Industries

Energy efficient

equipmentReducing waste and recyclingImproved design, quality control

Business

Using Energy efficient

appliancesUsing

natural resources

Reducing waste and recycling

SMEFPromote Green

Technologies and

Energy efficiency

through own use and

awareness building

Green Activities Relevant to SMEs