APES

Environmental Sustainability !

Promoting Environmental Sustainability

-Green building

• A green building is a building that has high-efficiency in the use of natural resources, water and materials that are used in designing and constructing the building.

climate change ?.....

• Climate change is a change in the statistical

distribution of weather over periods of time that

range from decades to millions of years.

Here are some ADVERSE EFFECTS …

• Rising of sea level
• Flooding
• Change of weather pattern

Global warming is the increase in the average temperature of Earth's near- surface air and oceans.

The Green

House Effect

• The rays of the sun warm the Earth.
• Heat from the Earth then travels back into the atmosphere.
• The gases in the atmosphere stop some of the heat from escaping into space and send them back

to the earth.

What would be our

globe without green house effect

• If there were no green house gases earth would have an expected temperature of 5.3 C.
• But the planet’s actual temperature is between 18-19 C.

Man made green house effect

&

Enhanced green house effect

What is Enhanced green house effect ?

• An increase in the concentration of greenhouse gases leads to an increase in the magnitude of the greenhouse effect..

• We are receiving energy faster than we reradiate it.

What can we do ?

What is renewable energy?.....

• Renewable Energy is a form of energy source that is replaced by a natural process at a rate that is equal to or faster than the rate at which that resource is being consumed.

Types of renewable energy sources

Hydropower

Wind power

Solar power

Bio-mass

Fuel cells

Geothermal energy

Types of renewable energy sources possible in Sri Lanka

What is hydro power ?

• Hydropower or hydraulic power is the power that is derived from the force or energy of moving water, which may be harnessed for useful purposes.

Hydroelectricity is the main source of energy in Sri Lanka,

taking a share of nearly 45% of the total

installed capacity in December 2009.

Power generation in hydro power plant

Wind power

What is wind power.......

• Wind power is the conversion of wind energy

into a useful form of energy,

such as using wind turbines to make electricity, 

wind mills for mechanical power, 

wind pumps for pumping water or drainage etc.

Wind Potential in Sri Lanka

Why wind power ?....

SOLAR POWER

How do we convert sunlight in to electricity ?

• Using photovoltaic cells.

Process of Power generation in solar cells

Worlds largest solar power plant

in China

Why solar power ?.......

• The lack of pollution given off by solar panels when generating electricity.
• Another advantage of solar energy is that the energy source (the sun) is completely renewable.
• Ability to harness power in remote locations.

THANK YOU!

http://apes-cs.blogspot.com/

HYDROPOWER

Upper Kothmale project

- Green building

- Green purchasing

- Green process and product design

A Solar power plant in US

• Allows the user to become less dependent on the worlds fossil fuel supplies, which are limited, and cause harm to the environment

-

best windy areas are Mannar,

Kalpitiya and Ambewella

Hambantota wind plant

Puttam wind power plant

01. wind is free and can be captured efficiently

02. small plot of land

03. No environmental pollution

This is a image of how flooding has affected a village

in Bangladesh

Here are satellite images of Florida set 30 years apart

CHANGE OF WEATHER PATTERN

GLOBAL WARMING

Natural green house effect