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Renewable and Non- renewable energy Sources

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Renewable energy is energy which is generated from natural sources i.e. sun, wind, rain, tides and can be generated again and again as and when required. Non-Renewable energy is energy which is taken ...

Renewable energy is energy which is generated from natural sources i.e. sun, wind, rain, tides and can be generated again and again as and when required. Non-Renewable energy is energy which is taken from the sources that are available on the earth in limited quantity and will vanish fifty-sixty years from now.

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  • Teacher notes This four-stage interactive animation could be used to explain how the greenhouse effect works. While showing the animation it is important to highlight the longer wavelength of the infrared that is emitted by the Earth. It is this radiation that is partially absorbed by greenhouse gases in the atmosphere, raising the temperature of the atmosphere. See the Chemistry “Climate Change” presentation for more information about the greenhouse effect.

Renewable and Non- renewable energy Sources Renewable and Non- renewable energy Sources Presentation Transcript

  • Renewable EnergyRenewable Energy  Renewable energy is energy which isRenewable energy is energy which is generatedgenerated from natural sourcesfrom natural sources i.e. sun, wind, rain, tides and cani.e. sun, wind, rain, tides and can be generated again and again as and when required.be generated again and again as and when required.  They are available in plenty and by far most theThey are available in plenty and by far most the cleanest sources of energy available on this planet.cleanest sources of energy available on this planet. For eg: Energy that we receive from the sun can beFor eg: Energy that we receive from the sun can be used to generate electricity. Similarly, energy fromused to generate electricity. Similarly, energy from wind, geothermal, biomass from plants, tides can bewind, geothermal, biomass from plants, tides can be used this form of energy to another form.used this form of energy to another form.
  • Non-Renewable EnergyNon-Renewable Energy  Non-Renewable energy is energy which is taken fromNon-Renewable energy is energy which is taken from the sources that are available on the earth in limitedthe sources that are available on the earth in limited quantity and will vanish fifty-sixty years from now.quantity and will vanish fifty-sixty years from now.  Non-renewable sources are not environmental friendlyNon-renewable sources are not environmental friendly and can have serious affect on our health.and can have serious affect on our health.  They are called non-renewable because they cannotThey are called non-renewable because they cannot be re-generated within a short span of time. Non-be re-generated within a short span of time. Non- renewable sources exist in the form of fossil fuels,renewable sources exist in the form of fossil fuels, natural gas, oil and coal.natural gas, oil and coal.
  • NONRENEWABLE RESOURCESNONRENEWABLE RESOURCES A nonrenewable resource is a natural resource that cannot be re-made or re-grown at a scale comparable to its consumption.
  • MERITS OF RE OVER NREMERITS OF RE OVER NRE  The sun, wind, geothermal, ocean energy areThe sun, wind, geothermal, ocean energy are available in the abundant quantity and free to use.available in the abundant quantity and free to use.  The non-renewable sources of energy that we areThe non-renewable sources of energy that we are using are limited and are bound to expire one day.using are limited and are bound to expire one day.  Renewable sources have low carbon emissions,Renewable sources have low carbon emissions, therefore they are considered as green andtherefore they are considered as green and environment friendly.environment friendly.
  • Conventional energy sources are:Conventional energy sources are: (a) Fossil fuel energy(a) Fossil fuel energy (b) Hydraulic energy(b) Hydraulic energy (c) Nuclear energy(c) Nuclear energy
  • (a) Fossil fuel energy(a) Fossil fuel energy Coal, petroleum, and natural gas are called FossilCoal, petroleum, and natural gas are called Fossil fuel as these are formed by the decomposition offuel as these are formed by the decomposition of the remains of dead plants and animals buriedthe remains of dead plants and animals buried under the earth for a long time.under the earth for a long time. These are non-renewable sources of energy,These are non-renewable sources of energy, which, if exhausted, can not be replenished in awhich, if exhausted, can not be replenished in a short time. Their reserves are limited and areshort time. Their reserves are limited and are considered very precious. These should be usedconsidered very precious. These should be used with care and caution to let them last long. Thesewith care and caution to let them last long. These are also contributing to the global environmentalare also contributing to the global environmental pollution.pollution.
  • (ii). Petroleum(ii). Petroleum It is a dark coloured, viscous and foul smellingIt is a dark coloured, viscous and foul smelling crude oil.crude oil. The petroleum means rock oil. It is normallyThe petroleum means rock oil. It is normally found under the crust of earth trapped in rocks.found under the crust of earth trapped in rocks. The crude oil is a complex mixture of severalThe crude oil is a complex mixture of several solid liquid gaseous hydrocarbons mixed withsolid liquid gaseous hydrocarbons mixed with water, salt and earth particles. It is a naturalwater, salt and earth particles. It is a natural product obtained from oil wells.product obtained from oil wells.
  • The products obtained from crude petroleum asThe products obtained from crude petroleum as follows:follows: (i) Petroleum gas (below 40oC) used as LPG.(i) Petroleum gas (below 40oC) used as LPG. (ii) Petrol (40oC to 170oC) for light vehicles.(ii) Petrol (40oC to 170oC) for light vehicles. (iii) Kerosene (170 to 250oC) for household(iii) Kerosene (170 to 250oC) for household and industrial use.and industrial use. (iv) Diesel oil (250 to 350oC) for heavy(iv) Diesel oil (250 to 350oC) for heavy vehicles.vehicles. (v) Residual oil ; (a) Lubrication oils (b)(v) Residual oil ; (a) Lubrication oils (b) paraffin wax and (c) asphaltparaffin wax and (c) asphalt (vi) Fuel oil (350 to 400oC) for boilers and(vi) Fuel oil (350 to 400oC) for boilers and furnaces.furnaces.
  • (iii) Natural gas(iii) Natural gas It consists about 95% Methane and rest ethaneIt consists about 95% Methane and rest ethane and propane.and propane.  It occurs deep under the crust of the earthIt occurs deep under the crust of the earth either alone or a long with oil above theeither alone or a long with oil above the petroleum deposits. It is a product ofpetroleum deposits. It is a product of petroleum mining.petroleum mining.
  • (c) Nuclear energy(c) Nuclear energy According to modern theories of atomicAccording to modern theories of atomic structure, matter consists of minute particlesstructure, matter consists of minute particles known as atoms. Heavier unstable atoms suchknown as atoms. Heavier unstable atoms such as U235,Th239, liberate large amount of heatas U235,Th239, liberate large amount of heat energy. The energy released by the completeenergy. The energy released by the complete fission of one Kg of Uranium (U235), is equalfission of one Kg of Uranium (U235), is equal to the heat energy obtained by burning 4500to the heat energy obtained by burning 4500 tonnes of coal (or) 220 tons of oil.tonnes of coal (or) 220 tons of oil.
  • What waste do fossil fuels produce?What waste do fossil fuels produce?  Burning fossil fuels creates waste products that canBurning fossil fuels creates waste products that can act as pollutants and have harmful environmentalact as pollutants and have harmful environmental effects.effects.  Carbon dioxideCarbon dioxide – This– This greenhouse gasgreenhouse gas is the mainis the main waste product of burning fossil fuels. Increased levelswaste product of burning fossil fuels. Increased levels of carbon dioxide due to human activities are thoughtof carbon dioxide due to human activities are thought to be connected with global warmingto be connected with global warming..  Sulfur dioxide and nitric oxidesSulfur dioxide and nitric oxides – These gaseous– These gaseous pollutants contribute to the formation of smog andpollutants contribute to the formation of smog and acid rain.acid rain.  AshAsh – This waste solid is disposed of in landfill sites.– This waste solid is disposed of in landfill sites.
  • What is the greenhouse effect?What is the greenhouse effect?
  • Green House Effect &Green House Effect & Atmosphere effectAtmosphere effect
  • Solar EnergySolar Energy  Originates with theOriginates with the thermonuclear fusionthermonuclear fusion reactions occurring inreactions occurring in the sun.the sun.  Represents the entireRepresents the entire electromagneticelectromagnetic radiation (visible light,radiation (visible light, infrared, ultraviolet, x-infrared, ultraviolet, x- rays, and radio waves).rays, and radio waves).
  • Without Green House effect -Without Green House effect - Without it, the Earth’s average temperatureWithout it, the Earth’s average temperature would be a chilling -18would be a chilling -18 00 C.C. Then life on Earth would probably have neverThen life on Earth would probably have never emerged from the sea.emerged from the sea. Thanks to the greenhouse effect, however,Thanks to the greenhouse effect, however, heat emitted from the Earth is trapped in theheat emitted from the Earth is trapped in the atmosphere, providing us with a comfortableatmosphere, providing us with a comfortable average temperature of 14average temperature of 14 00 C.C. But when man makes it increase uncontrolled...But when man makes it increase uncontrolled...
  • GREEN HOUSE GASES (CHGs)GREEN HOUSE GASES (CHGs)  Water vapourWater vapour  COCO22- Burning of fossil fuels – Oil, gas, coal, wood, solid- Burning of fossil fuels – Oil, gas, coal, wood, solid waste etc.waste etc.  Methane, CHMethane, CH44 - Decay of organic waste in waste land fills,- Decay of organic waste in waste land fills, production of oil, gas, coalproduction of oil, gas, coal  NONO2 _2 _ Nitrous Oxide – Agricultural and industrial activitiesNitrous Oxide – Agricultural and industrial activities & burning fossil fuels and solid waste.& burning fossil fuels and solid waste.  CFCs - Hydro fluorocarbons, per fluorocarbons, andCFCs - Hydro fluorocarbons, per fluorocarbons, and sulphur hexafluoride are synthetic, powerful greenhousesulphur hexafluoride are synthetic, powerful greenhouse gasesgases
  • WHERE IS THE COWHERE IS THE CO22 CONCENTRATION GOING?CONCENTRATION GOING?
  • Air temperature from 1860 to present,Air temperature from 1860 to present, UK Meteorological office.UK Meteorological office.
  • Water shortage – a sceneWater shortage – a scene
  • RENEWABLE RESOURCESRENEWABLE RESOURCES Renewable resources are natural resources thatRenewable resources are natural resources that can be replenished in a short period of time.can be replenished in a short period of time. ●● Solar Geothermal●Solar Geothermal● ●● Wind Biomass●Wind Biomass● ●● WaterWater
  • Non-Conventional Energy SourcesNon-Conventional Energy Sources The sources of energy which are beingThe sources of energy which are being produced continuously in nature and are inproduced continuously in nature and are in exhaustible are called renewable sources ofexhaustible are called renewable sources of energy (or) non-conventional energy.energy (or) non-conventional energy. Some of these sources are:Some of these sources are: (a) Wind energy(a) Wind energy (b) Tidal energy(b) Tidal energy (c) Solar energy(c) Solar energy
  • Solar energySolar energy Energy from the sun is called solar energy.Energy from the sun is called solar energy. The Sun’s energy comes from nuclear fusionThe Sun’s energy comes from nuclear fusion reaction that take place deep in the Sun.reaction that take place deep in the Sun. Hydrogen nucleus fuse into helium nucleus.Hydrogen nucleus fuse into helium nucleus. The energy from these reactions flow out fromThe energy from these reactions flow out from the sun and escape into spacethe sun and escape into space
  • Wind energyWind energy Winds are caused because of two factors.Winds are caused because of two factors. 1. The absorption of solar energy on the earth’s1. The absorption of solar energy on the earth’s surface and in the atmosphere.surface and in the atmosphere. 2. The rotation of the earth about its axis and its2. The rotation of the earth about its axis and its motion around the Sun.motion around the Sun. A wind mill converts the kinetic energy ofA wind mill converts the kinetic energy of moving air into Mechanical energy that can bemoving air into Mechanical energy that can be either used directly to run the Machine or toeither used directly to run the Machine or to run the generator to produce electricity.run the generator to produce electricity.
  • Tides are generated primarily by theTides are generated primarily by the gravitational attraction between the earth andgravitational attraction between the earth and the Moon. They arise twice a day in Mid-the Moon. They arise twice a day in Mid- Ocean.Ocean. Basically in a tidal power station water at highBasically in a tidal power station water at high tide is first trapped in a artificial basin and thentide is first trapped in a artificial basin and then allowed to escape at low tide.allowed to escape at low tide. The escaping water is used to drive waterThe escaping water is used to drive water turbines, which in turn drive electricalturbines, which in turn drive electrical generators.generators.