Intro

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Forms of energy
What is energy ?
• Muscle energy is used for all manual works like
cycling, boating, writing etc.,
• Wind energy is directly used by man to run boats.
• James Watt invented steam engine in 18th centaury.
• Electricity is became superior to all other forms of
energy.

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Advantages of electrical energy
• Greater flexibility.
• Easy control.
• Easy to transport.
• Cleanliness.
• Cheapness.

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Generation of electricity.
Electricity is generated by converting different naturally
available resources like water, coal, wind, solar energy
etc,.
Shaft
Sources of Energy
Prime
Mover
Coupling R Y B
Principle of Power Generation

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Classification of energy sources.
Sources of energy
Conventional
Sources of
Energy.
Non-Conventional
Sources of
Energy.

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Conventional sources of energy.
• Solid fuels (coal, wood, ).
• Liquid fuels (heave oil, diesel oil, petrol, etc,.)
• Gaseous fuels (natural gas, petroleum gas, etc,.)
• Water power (hydro)
• Nuclear power (uranium)

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Non-conventional sources of Energy
• Solar energy
• Ocean Tides and Waves energy
• The wind energy
• Geo-thermal energy
• Biomass/Biogas
• Ocean Thermal Energy Conversion (OTEC)

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• Fuel cells
• Magneto Hydro Dynamic Generation (MHD)
• Thermo-electric power
• Piezeo electric power

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Wind Mills

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Solar Panels

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Renewable energy sources
“Renewable energy sources are ones that won’t
run out”.
Ex:
1) wind keeps on blowing.
2) Sun light glows for ever.

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Non-Conventional sources
Renewable energy
sources
Alternative
energy sources

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Alternative sources of energy.
“It is the modification of existing sources”.
These are obtained by modifying conventional
sources.
Ex:
1) Gasification of coal.
2) Magneto hydro dynamics.
3) Fluid bed combustion.

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Tidal Power
Artist's impression of a row of tidal current
turbines, one of them raised for maintenance