need for conservation

8/7/2019 Need for Conservation

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Conservation of energyConservation of energy


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ContentsContents

Conventional1

Non Convention sources2


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DiagramDiagram

Conventional

sources.

Sources which

are exhaustable

Sources

Non

Conventional

sources.

Sources whichare not

exhaustable


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Conventional SourcesConventional Sources

Energy sources which areexhaustable in nature are calledconventional sources.

Eg:Coal,Petrol ,etc.


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Cycle DiagramCycle Diagram

Petrol

WoodCoal

Fossilfuels

Diesel

Conventional

sources

Conventional

sources

Exhaustable


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CoalCoal

Coal varies in quality according to the amountof pressure and heat to which it is subjected

to during its formation

It consists largely of carbon, hydrogen,

oxygen and a small amount of sulphur and

nitrogen

It is formed in layers called seams and takes

millions of years to be formed


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WoodWood

It is a major source of energy for man as itis widely used for cooking and heating

It is a primary fuel which can be used

directly to produce heat


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Fossil FuelsFossil Fuels

It includes fuels which are mostcommonly used such as wood, coal andpetroleum.

These fossil fuels are non-renewablesources of energy. Therefore we need toconserve them


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Dis advantagesDis advantages

A major portion of heat produced byburning wood is lost to the surroundings

and only 8% of the total heat is actually

used for cooking food leading to hugewastage of fuel

It produces a lot of smoke due to

incomplete combustion leading to

pollution and health hazards


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Non conventionalNon conventional

Energy sources which are notexhaustable in nature are called

conventional sources.

Eg:W

ind, hydro,etc.


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Cycle DiagramCycle Diagram

Geothermal

WindHydro

Solar

Biofuel

Non

conventional

sources

Non

conventional

sources

Non exhaustable


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How can electricity be made???How can electricity be made???


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Wind powerWind power

Power which is generated with the help ofwind energy is called wind powered

energy.

Wind power is renewable and produces nogreenhouse gases during operation, such

as carbon dioxide and methane.


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HydropowerHydropower

Energy in water can be harnessed and used iscalled hydropower energy.

Hydroelectric energy is a term usually reserved

for large-scale hydroelectric dams.


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Solar energySolar energy

Solar energy is the energy derived from the sunthrough the form of solar radiation. Solar

powered electrical generation relies on

photovoltaics and heat engines.


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BiofuelBiofuel

Liquid biofuel is usually either bioalcoholsuch as bioethanol or an oil such as

biodiesel..


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Geothermal energyGeothermal energy

Geothermal energy is energy obtained bytapping the heat of the earth itself, both from

kilometers deep into the Earth's crust in some

places of the globe or from some meters in

geothermal heat pump in all the places of theplanet.


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Adantages of non conventional sourcesAdantages of non conventional sources

solar energy - the sun will always be there, and in abundance - the

amount of solar energy intercepted by the Earth every minute is

greater than the amount of energy the world uses in fossil fuels each

year.

wind energy - the wind will always exist.

tidal energy - the moon which provides the forces that causes the

tides.

hydroelectric energy - unless there is a drastic change in rain

patterns.


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Disadvantages of renewable energy?Disadvantages of renewable energy?

solar -- panels are expensive. Governments are not all willing to buy home

generated electricity. Not all climates are suitable for solar panels.

wind -- turbines are expensive. Wind doesn't blow all the time, so they have

to be part of a larger plan.

waves -- different technologies are being tried around the world.S

cientistsare still waiting for the ultimate development.

tides -- barrages (dams) across river mouths are expensive to build and

disrupt shipping. Smaller turbines are cheaper and easier to install.

rivers -- Dams are expensive to build and disrupt the environment. Smallerturbines are cheaper and easier to install.

geothermal -- Difficult to drill two or three kilometers down into the earth.

biofuel -- often uses crop land or crops (like corn) to produce biofuel so the

price of cheap food goes up.


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Electricity used by India.Electricity used by India.

India is world's 6th largest energyconsumer, accounting for 3.4% of global

energy consumption.

India produces 680 billion kWH

. India Utilizes 517.2 billion kWh.


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GenerationGeneration

Thermal Power:

Current installed capacity of Thermal

Power (as of 12/2008) is 93,392.64 MW

which is 64.7% of total installed capacity. Hydro Power:

The installed capacity as of 2008 was

approximately 36647.76MW Nuclear power:

Currently, nineteen nuclear power reactors

produce 4,560.00 MW


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2006 2007 2008 2009(billionkhw)

519 587 517 560

StatsStats


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APresentation by:

Veleta Concessao. 4007

PeterShaon Fernandes. 4018Jyotsna Shetty . 4036

Francis Swamy. 4039

Sheldon Sequeira. 4054

Rhea Jacob. 4065Rema Dcunha. 4071

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