Renewable Energy Resourses

A presentation by,
V. Meenakshi & M.Shalini,
     2nd year B.Tech CSE
Renewable energy - any sustainable energy which
comes from natural resources such as sunlight, wind,
          tides, rain, geothermal energy.



Some aspects of Renewable energy
 It exists perpetually and is abundant.
 Ready to be harnessed, inexhaustible.
 Clean alternative to fossil fuels.
About 16% of global final energy
consumption comes from
renewables, with 10% coming from
traditional biomass (used for
heating) and 3.4%
from hydroelectricity.
   New renewables (small hydro,
modern biomass, wind, solar,
geothermal, and bio-fuels)
accounted for another 3%
consumption and are growing very
rapidly.
   The electrical generation globally
is mainly from hydroelectricity and
the rest from new renewables.
Renewable Energy


       Hydro energy


        Wind energy


        Solar energy


         Biomass

     Geothermal energy
Renewable Energy Resourses
Renewable Energy Resourses
Renewable Energy Resourses
Renewable Energy Resourses
Renewable Energy Resourses
Renewable Energy


       Hydro energy


        Wind energy


        Solar energy


         Biomass

     Geothermal energy
History
   Humans have been using wind
    power for at least 5,500 years
    to propel sailboats and sailing
    ships.
   Windmills have been used for
    irrigation pumping and for
    milling grain
    since the 7th
    century AD
    in Afghanistan,
    India, Iran and
    Pakistan.
Wind power is a renewable energy source used to generate electricity by
converting wind energy into mechanical energy. This mechanical energy is then
converted into electricity by the use of an electrical generator located within each
individual wind machine.
                                      Blowing wind spins the blades of a wind
                                     turbine – this device is called a wind
                                     turbine and not a windmill
                                       A windmill grinds or mills grains or is
                                     used to pump water
                                       Worldwide there are now many
                                     thousands of wind turbines operating,
                                     with a total nameplate capacity of
                                     194,400 MW.
                                       World wind generation capacity more
                                     than quadrupled between 2000 and 2006,
                                     doubling about every three years.
    Off –shore wind turbine
Electricity generation
The blades of a turbine are attached to a
hub that is mounted on a turning shaft.

The shaft goes through a gear
transmission box where the turning
speed is increased.
The transmission box is attached to a
high speed shaft which turns a generator
that makes electricity
In a wind farm(which is a group of wind
turbines in the same location used for
production of electric power), individual
turbines are interconnected with a
medium voltage (often 34.5 kV), power
collection system and communications
network.

                                            wind farm
Renewable Energy Resourses
Renewable Energy


       Hydro energy


        Wind energy


        Solar energy


         Biomass

     Geothermal energy
Solar energy is the
  radiant light and heat from the sun.
  It has been harnessed by humans
  since ancient times using a range of
  ever-evolving technologies.
Solar energy technologies include use of
  solar energy for
        solar heating
        solar photovoltaic
        solar thermal electricity
        solar architecture
    We can change the sunlight
  directly into electricity by using
  solar cells also called as photovoltaic
  cells
How electricity is generated?
                     When sunlight strikes the solar cell
                     electrons are knocked out loose
                     from the molecule
                      They move towards the treated
                     front surface.
                      An electron imbalance is created
                     between both the surfaces of the
                     solar cell.
                      When the two surfaces are joined
                     by a connector like a wire , a current
                     of electricity occurs between the
                     negative and positive sides.
                      This electricity produced s used for
                     various purposes household and
                     industrially.
                      Use of many solar cells or setting a
                     solar plant provides the purpose.
Small scale solar powered sewerage treatment
plant.




                                               Solar water heaters
Generate electricity in geo-synchronous orbit using solar power satellites
Applications of solar technology :
  Solar technologies are broadly
  characterized as either passive
  solar or active solar depending on
  the way they capture, convert and
  distribute solar energy.
  Active solar techniques use
  photovoltaic panels, pumps, and fans
  to convert sunlight into useful
  outputs.
  Passive solar techniques include
      selecting materials with favorable
  thermal properties
      designing spaces that naturally
  circulate air
      referencing the position of a
  building to the Sun
Renewable Energy


       Hydro energy


        Wind energy


        Solar energy


         Biomass

     Geothermal energy
Biomass (or Bio-fuels)
          Biomass is all plant material, or
          vegetation, either raw or processed,
          wild or cultivated.
          Bio-fuel is a type of fuel whose energy is
          derived from biological carbon fixation.
          Bio-fuels are derived
          from biomass conversion, as well
          as solid biomass, liquid fuels and
          various biogases.
          Uses - Industrial process heat and steam,
          Electrical power generation,
          Transportation fuels (ethanol and
          biodiesel) and other products.
Socio-Economic Benefits
• Helps developing economies by promoting agrarian communities
• Increase in jobs
• Increase in trade balance (Indian perspective) due to lesser
dependence on foreign resources

 Bio-refinery
   A facility that integrates biomass conversion processes and
   equipment to produce fuels, power, and chemicals from biomass.

   Analogous to today's petroleum refineries

   It is based on the “Sugar Platform” and the “Thermo chemical
   Platform”
Renewable Energy Resourses
First generation bio-fuels :                 Filtered waste vegetable oil
•   Bioalcohols
•   Biodiesel
•   Green diesel
•   Vegetable oil
•   Bioethers
•   Biogas
•   Syngas
•   Solid biofuels
                     Pipes carrying Biogas
The various Bio-fuels available…
Renewable Energy


       Hydro energy


        Wind energy


        Solar energy


         Biomass

     Geothermal energy
Geothermal Energy
 History :
    Hot Springs have been used for bathing at least since Paleolithic times

    The oldest known spa is a stone pool on China’s Lisan mountain built in the Qin
 dynasty in the 3rd century BC, at the same site where the Huaqing Chi palace was
 later built.
Hot water springs form due to geothermal energy of the earth
Geothermal energy
   it is thermal energy generated and stored in the Earth. Thermal energy is the energy
that determines the temperature of matter.

   originates from the formation of the planet (20%) and from radioactive decay of
minerals (80%).

   The Geothermal gradient, which is the difference in temperature between the core of
the planet and its surface, drives a continuous conduction of thermal energy in the form
of heat from the core to the surface.

   Geothermal power is cost effective, reliable, sustainable, and environmentally
friendly, but has historically been limited to areas near tectonic plate boundaries.

   Geothermal power has the potential to help mitigate global warming if widely
deployed in place of fossil fuels.
Schematic representation of an ideal geothermal system
Generation of electricity using steam power plants
  from geothermal energy

  The steam rotates a turbine that activates a
  generator, which produces electricity

  There are three types of geothermal power
  plants: dry steam, flash steam, and binary cycle.

   Dry steam power plants draw from
  underground resources of steam and is sent to
  the turbines/generator unit to produce power

   Flash steam power plants use geothermal
  reservoirs of water with temperatures greater
  than 360°F (182°C). This very hot water flows up
  through wells in the ground under its own
  pressure.

   Binary cycle power plants operate on water at
  lower temperatures of about 225°-360°F (107°-
  182°C).
Steam-driven Electric Power Plant
1. Cooling tower
2. Cooling water pump or
Circulating water pump
3. Transmission line
4. Step-up transformer
5. Electric generator
6. Low pressure turbine
7a. Condensate pump
7b. Boiler Feed water pump
8. Condenser
9. Intermediate pressure turbine
10. Steam governor or control
valve
11. High pressure turbine
12. De-aerator
13. Feed heater
14. Re-heater section
15. Steam generating heat
source
16. Moisture separators
Bibliography :
// google.com

// en.wikipedia.org/wiki/Renewable_resource

// www.renewsindia.com
Renewable Energy Resourses
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Renewable Energy Resourses

  • 1. A presentation by, V. Meenakshi & M.Shalini, 2nd year B.Tech CSE
  • 2. Renewable energy - any sustainable energy which comes from natural resources such as sunlight, wind, tides, rain, geothermal energy. Some aspects of Renewable energy It exists perpetually and is abundant. Ready to be harnessed, inexhaustible. Clean alternative to fossil fuels.
  • 3. About 16% of global final energy consumption comes from renewables, with 10% coming from traditional biomass (used for heating) and 3.4% from hydroelectricity. New renewables (small hydro, modern biomass, wind, solar, geothermal, and bio-fuels) accounted for another 3% consumption and are growing very rapidly. The electrical generation globally is mainly from hydroelectricity and the rest from new renewables.
  • 4. Renewable Energy Hydro energy Wind energy Solar energy Biomass Geothermal energy
  • 10. Renewable Energy Hydro energy Wind energy Solar energy Biomass Geothermal energy
  • 11. History  Humans have been using wind power for at least 5,500 years to propel sailboats and sailing ships.  Windmills have been used for irrigation pumping and for milling grain since the 7th century AD in Afghanistan, India, Iran and Pakistan.
  • 12. Wind power is a renewable energy source used to generate electricity by converting wind energy into mechanical energy. This mechanical energy is then converted into electricity by the use of an electrical generator located within each individual wind machine. Blowing wind spins the blades of a wind turbine – this device is called a wind turbine and not a windmill A windmill grinds or mills grains or is used to pump water Worldwide there are now many thousands of wind turbines operating, with a total nameplate capacity of 194,400 MW. World wind generation capacity more than quadrupled between 2000 and 2006, doubling about every three years. Off –shore wind turbine
  • 13. Electricity generation The blades of a turbine are attached to a hub that is mounted on a turning shaft. The shaft goes through a gear transmission box where the turning speed is increased. The transmission box is attached to a high speed shaft which turns a generator that makes electricity In a wind farm(which is a group of wind turbines in the same location used for production of electric power), individual turbines are interconnected with a medium voltage (often 34.5 kV), power collection system and communications network. wind farm
  • 15. Renewable Energy Hydro energy Wind energy Solar energy Biomass Geothermal energy
  • 16. Solar energy is the radiant light and heat from the sun. It has been harnessed by humans since ancient times using a range of ever-evolving technologies. Solar energy technologies include use of solar energy for solar heating solar photovoltaic solar thermal electricity solar architecture We can change the sunlight directly into electricity by using solar cells also called as photovoltaic cells
  • 17. How electricity is generated? When sunlight strikes the solar cell electrons are knocked out loose from the molecule They move towards the treated front surface. An electron imbalance is created between both the surfaces of the solar cell. When the two surfaces are joined by a connector like a wire , a current of electricity occurs between the negative and positive sides. This electricity produced s used for various purposes household and industrially. Use of many solar cells or setting a solar plant provides the purpose.
  • 18. Small scale solar powered sewerage treatment plant. Solar water heaters
  • 19. Generate electricity in geo-synchronous orbit using solar power satellites
  • 20. Applications of solar technology : Solar technologies are broadly characterized as either passive solar or active solar depending on the way they capture, convert and distribute solar energy. Active solar techniques use photovoltaic panels, pumps, and fans to convert sunlight into useful outputs. Passive solar techniques include selecting materials with favorable thermal properties designing spaces that naturally circulate air referencing the position of a building to the Sun
  • 21. Renewable Energy Hydro energy Wind energy Solar energy Biomass Geothermal energy
  • 22. Biomass (or Bio-fuels) Biomass is all plant material, or vegetation, either raw or processed, wild or cultivated. Bio-fuel is a type of fuel whose energy is derived from biological carbon fixation. Bio-fuels are derived from biomass conversion, as well as solid biomass, liquid fuels and various biogases. Uses - Industrial process heat and steam, Electrical power generation, Transportation fuels (ethanol and biodiesel) and other products.
  • 23. Socio-Economic Benefits • Helps developing economies by promoting agrarian communities • Increase in jobs • Increase in trade balance (Indian perspective) due to lesser dependence on foreign resources Bio-refinery A facility that integrates biomass conversion processes and equipment to produce fuels, power, and chemicals from biomass. Analogous to today's petroleum refineries It is based on the “Sugar Platform” and the “Thermo chemical Platform”
  • 25. First generation bio-fuels : Filtered waste vegetable oil • Bioalcohols • Biodiesel • Green diesel • Vegetable oil • Bioethers • Biogas • Syngas • Solid biofuels Pipes carrying Biogas
  • 26. The various Bio-fuels available…
  • 27. Renewable Energy Hydro energy Wind energy Solar energy Biomass Geothermal energy
  • 28. Geothermal Energy History : Hot Springs have been used for bathing at least since Paleolithic times The oldest known spa is a stone pool on China’s Lisan mountain built in the Qin dynasty in the 3rd century BC, at the same site where the Huaqing Chi palace was later built. Hot water springs form due to geothermal energy of the earth
  • 29. Geothermal energy it is thermal energy generated and stored in the Earth. Thermal energy is the energy that determines the temperature of matter. originates from the formation of the planet (20%) and from radioactive decay of minerals (80%). The Geothermal gradient, which is the difference in temperature between the core of the planet and its surface, drives a continuous conduction of thermal energy in the form of heat from the core to the surface. Geothermal power is cost effective, reliable, sustainable, and environmentally friendly, but has historically been limited to areas near tectonic plate boundaries. Geothermal power has the potential to help mitigate global warming if widely deployed in place of fossil fuels.
  • 30. Schematic representation of an ideal geothermal system
  • 31. Generation of electricity using steam power plants from geothermal energy The steam rotates a turbine that activates a generator, which produces electricity There are three types of geothermal power plants: dry steam, flash steam, and binary cycle. Dry steam power plants draw from underground resources of steam and is sent to the turbines/generator unit to produce power Flash steam power plants use geothermal reservoirs of water with temperatures greater than 360°F (182°C). This very hot water flows up through wells in the ground under its own pressure. Binary cycle power plants operate on water at lower temperatures of about 225°-360°F (107°- 182°C).
  • 32. Steam-driven Electric Power Plant 1. Cooling tower 2. Cooling water pump or Circulating water pump 3. Transmission line 4. Step-up transformer 5. Electric generator 6. Low pressure turbine 7a. Condensate pump 7b. Boiler Feed water pump 8. Condenser 9. Intermediate pressure turbine 10. Steam governor or control valve 11. High pressure turbine 12. De-aerator 13. Feed heater 14. Re-heater section 15. Steam generating heat source 16. Moisture separators
  • 33. Bibliography : // google.com // en.wikipedia.org/wiki/Renewable_resource // www.renewsindia.com