Geothermal energy


Published on

this ppt involves the geothermal energy in detail and geothermal localities in india..

Published in: Education, Technology, Business
  • Be the first to comment

No Downloads
Total views
On SlideShare
From Embeds
Number of Embeds
Embeds 0
No embeds

No notes for slide

Geothermal energy

  1. 1. Class: M.Sc. Previous. 1 st semester. Roll No: 09 Under the supervision of Naseer sir.
  2. 3. Greek words : ‘ Geo ’ meaning ‘ Earth ’ And ‘ Therme ’ meaning ‘ Heat ’…
  3. 4. <ul><li>Form of Renewable energy which is obtained from the earths internal heat energy…. </li></ul><ul><li>The heat of the earth makes its way to the surface by conduction… </li></ul><ul><li>The amount of internal energy(heat) of the earth in one year is just enough to melt an imaginary ice layer 6mm thick(0.2 inch) which spreads all over the globe… </li></ul>
  4. 5. <ul><li>Most of the geothermal heat sources are usually associated with igneous activity but heated ground water may also be one of the means of geothermal energy. </li></ul>
  5. 6. <ul><li>The ground water comes in the form of jet like emissions at some places in the form of hot-water or in the form of steam through small vents, these are called geysers… </li></ul><ul><li>This water comes out with the tremendous pressure and very high temperature not below the boiling point of water… </li></ul>
  6. 7. <ul><li>The phenomenon of emission of jet of gases issuing from a small vent… </li></ul><ul><li>Gas temp. in fumaroles is extremely high upto 320 °C(650°F)… </li></ul><ul><li>Most of the gas (over 99%) is water… </li></ul><ul><li>In otherwords, the fumarole emits largely super heated steam… </li></ul>
  7. 8. <ul><li>Geothermal Energy can be divided into three temp. regimes… </li></ul><ul><li>High = > 150 °C </li></ul><ul><li>Moderate = 90 - 150°C </li></ul><ul><li>Low = < 90°C. </li></ul>
  8. 9. <ul><li>U.S. Geothermal plants currently have a capacity of generating about 2200MW of energy, about the same as 4 large nuclear power plants… </li></ul><ul><li>Geothermal power plants currently supply 0.3% of the world’s electricity… </li></ul><ul><li>World’s 1 st geothermal power plant began operational in 1913 in Italy… </li></ul>
  9. 10. <ul><li>Imperial Valley in Southern California… </li></ul><ul><li>Area Covered= 5000 sq. kms. </li></ul><ul><li>Tectonically active area… </li></ul><ul><li>Reservoirs of extremely hot ground water(260 °C to 370°C= 500°F to 700°F)… </li></ul><ul><li>About 2000 metric tonnes of steam and hot water daily flows here near the Mexican border… </li></ul><ul><li>Presently 200MW of electricity are produced in the region… </li></ul><ul><li>Heat remaining in water after the generation of electricity is used for distillation of waste water and produce substantial yield of irrigation, a valuable commodity in this desert region of Northern California… </li></ul>
  10. 11. <ul><li>Geothermal energy is being used from a long time back, when Romans used it for heating their bath houses… </li></ul><ul><li>This energy can be used in diverse ways… </li></ul><ul><li>Space heating.. </li></ul><ul><li>Industrial process steam.. </li></ul><ul><li>Green houses.. </li></ul><ul><li>Aquaculture.. </li></ul><ul><li>Home heating and cooling.. </li></ul><ul><li>Current U.S. installed capacity is about 470MW, enough to heat 40,000 homes… </li></ul>
  11. 12. Geothermal Localities in INDIA <ul><li>There are 340 Hot Spring localities identified in India as per the Geological Survey of India. </li></ul><ul><li>Magneto Telluric Investigations have already been carried out at </li></ul><ul><ul><li>Puga Valley(Ladakh, J&K). </li></ul></ul><ul><ul><li>Tatta Pani (Chattisgarh). </li></ul></ul><ul><li>Investigations were continued in Satluj-Spiti, Beas & Prabati Valleys in H.P., Badrinath tapovan in Uttrakhand & Surajkundh in Jarkhand for assessing the Geothermal Potential of these areas. </li></ul>