際際滷

際際滷Share a Scribd company logo

Renewable energy resources

Download as PPT, PDF
M
manimaran2511

This document discusses various renewable energy resources including solar power, hydro power, wind power, biomass, solar-hydrogen, and geothermal energy. It provides details on how each resource can be used to provide heat and electricity. It also outlines some of the environmental impacts of hydroelectric power generation such as disruption of river ecosystems and displacement of communities. Finally, it proposes a sustainable energy strategy for the future that increases renewable energy and energy efficiency while reducing dependence on coal and phasing out nuclear power.

1 of 18
Downloaded 33 times
RENEWABLE ENERGY RESOURCES BY MANIMARAN S I ANATHARAMAN
contents Types of sources Solar power Hydro power Wind power Biomass Solar-hydrogen Geothermal sustainable energy conclusion
Renewable Energy Resources! Biomass Hydroelectric power Geothermal Solarpassive and active Wind generation Hydrogen power
Using Solar Energy to Provide Heat and Electricity Passive solar heating Active solar heating
Using Solar Energy to Provide High- Temperature Heat and Electricity Solar Cell Trade-Offs Solar thermal systems Photovoltaic (PV) cells
Producing Electricity from Moving Water Large-scale hydropower Small-scale hydropower 50% of West Coast electricity 7% of US electricity 20% of Worlds electricity Major environmental impacts High construction costs
Impacts of hydropower on salmon and other riverine spp. Pollution Disruption of water flow Loss of biodiversity Invasive species
Impacts of hydropower on Species and People_______________ Dams can provide many human benefits but: Disrupts ecological services rivers provide; e.g. 119 dams on Columbia River have caused a 94% drop in wild salmon; removing hydroelectric dams will restore native spawning grounds Displaces millions of people worldwide as reservoirs flood traditional homelands No room for expansion in the US
Producing Electricity from Wind
Producing Energy from Biomass Biofuels Biomass plantations Crop residues Animal manure Biogas Ethanol Methanol
The Solar-Hydrogen Revolution Extracting hydrogen efficiently Storing hydroge Fuel cells
Geothermal Energy Geothermal reservoirs Dry steam Wet steam Hot water Molten rock Hot dry-rock zones
Geothermal Reservoirs
Creating a Sustainable Energy Future Increase fuel efficiency standards for vehicle, appliances, buildings Tax and other financial incentives for energy efficiency Subsidize renewable energy use, research and development Internalize externalities for fossil fuels By 2050: Increase renewable energy to 50% cut coal use by 50% phase out nuclear altogether
Solutions: A Sustainable Energy Strategy
conclusion Thus we see about the renewable energy sources , its types , applications , merits and demerits
Any queries ?
Thank you

More Related Content

Renewable energy resources

  • 1. RENEWABLE ENERGY RESOURCES BY MANIMARAN S I ANATHARAMAN
  • 2. contents Types of sources Solar power Hydro power Wind power Biomass Solar-hydrogen Geothermal sustainable energy conclusion
  • 3. Renewable Energy Resources! Biomass Hydroelectric power Geothermal Solarpassive and active Wind generation Hydrogen power
  • 4. Using Solar Energy to Provide Heat and Electricity Passive solar heating Active solar heating
  • 5. Using Solar Energy to Provide High- Temperature Heat and Electricity Solar Cell Trade-Offs Solar thermal systems Photovoltaic (PV) cells
  • 6. Producing Electricity from Moving Water Large-scale hydropower Small-scale hydropower 50% of West Coast electricity 7% of US electricity 20% of Worlds electricity Major environmental impacts High construction costs
  • 7. Impacts of hydropower on salmon and other riverine spp. Pollution Disruption of water flow Loss of biodiversity Invasive species
  • 8. Impacts of hydropower on Species and People_______________ Dams can provide many human benefits but: Disrupts ecological services rivers provide; e.g. 119 dams on Columbia River have caused a 94% drop in wild salmon; removing hydroelectric dams will restore native spawning grounds Displaces millions of people worldwide as reservoirs flood traditional homelands No room for expansion in the US
  • 10. Producing Energy from Biomass Biofuels Biomass plantations Crop residues Animal manure Biogas Ethanol Methanol
  • 11. The Solar-Hydrogen Revolution Extracting hydrogen efficiently Storing hydroge Fuel cells
  • 12. Geothermal Energy Geothermal reservoirs Dry steam Wet steam Hot water Molten rock Hot dry-rock zones
  • 14. Creating a Sustainable Energy Future Increase fuel efficiency standards for vehicle, appliances, buildings Tax and other financial incentives for energy efficiency Subsidize renewable energy use, research and development Internalize externalities for fossil fuels By 2050: Increase renewable energy to 50% cut coal use by 50% phase out nuclear altogether
  • 16. conclusion Thus we see about the renewable energy sources , its types , applications , merits and demerits

Editor's Notes

  • #4: What is nuclear energy? In a nuclear fission reaction, neutrons split the nuclei of atoms such as uranium-235 and plutonium-239. In the process, energy (primarily in the form of high temperature heat) is released. In a nuclear reactor, the production of heat generated by this reaction is controlled and used to produce high pressure steam, which is in turn used to spin turbines that generate electricity. Nuclear fission is basically the splitting of nuclei of certain isotopes with large mass numbers. Neutrons are fired at them, which causes them to split into lighter nuclei and to release single neutrons and energy. These single neutrons can in turn cause additional fission, but there has be enough single neutrons (critical mass) in order for the reaction to sustain itself. If controllable, nuclear power can be an efficient source of power, but large government subsidies distort the true price of nuclear and the disposal of nuclear waste has proven to be an environmentalists nightmare. Disasters on the global scale, such as Chernobyl and Three Mile Island, also highlight the risk of this type of energy source.
  • #15: What is nuclear energy? In a nuclear fission reaction, neutrons split the nuclei of atoms such as uranium-235 and plutonium-239. In the process, energy (primarily in the form of high temperature heat) is released. In a nuclear reactor, the production of heat generated by this reaction is controlled and used to produce high pressure steam, which is in turn used to spin turbines that generate electricity. Nuclear fission is basically the splitting of nuclei of certain isotopes with large mass numbers. Neutrons are fired at them, which causes them to split into lighter nuclei and to release single neutrons and energy. These single neutrons can in turn cause additional fission, but there has be enough single neutrons (critical mass) in order for the reaction to sustain itself. If controllable, nuclear power can be an efficient source of power, but large government subsidies distort the true price of nuclear and the disposal of nuclear waste has proven to be an environmentalists nightmare. Disasters on the global scale, such as Chernobyl and Three Mile Island, also highlight the risk of this type of energy source.