Best ppt on Geothermal powerplant

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Best ppt on Geothermal powerplant

  1. 1. GEOTHERMALGEOTHERMAL POWERPLANTPOWERPLANT INDEX  INTRODUCTION  GEOTHERMAL POWER STATION TYPES  GEOTHERMAL AREAAVAILABLE  CAPITAL COST, OPERATING & MAINTAINANCE OF PLANT  ADVANTAGES AND LIMITATIONS  FUTURE ASPECTS  CONCLUSION
  2. 2. INTRODUCTIONINTRODUCTION  Geothermal energy is thermal energy generated and stored in the Earth. Thermal energy is the energy that determines the temerature of matter. Earth's geothermal energy originates from the original formation of the planet (20%) and from radioactive decay of minerals (80%).  A geothermal power plant uses its geothermal activity to generate power. This type of natural energy production is extremely environmentally friendly and used in many geothermal hot spots around the globe.
  3. 3. Geothermal Power station typesGeothermal Power station types  Dry steam power plants Dry steam plants are the simplest and oldest design. They directly use geothermal steam of 150°C or greater to turn turbines.  Flash steam power plants Flash steam plants pull deep, high-pressure hot water into lower-pressure tanks and use the resulting flashed steam to drive turbines. They require fluid temperatures of at least 180°C, usually more. This is the most common type of plant in operation today.
  4. 4. DRY STEAM PLANT FLASH STEAMDRY STEAM PLANT FLASH STEAM
  5. 5. GEOTHERMAL AREA AVAILABLEGEOTHERMAL AREA AVAILABLE The International Geothermal Association (IGA) has reported that 10,715 megawatt (MW) of geothermal power in 24 countries is online, which is expected to generate 67,246 GWh of electricity in 2010. This represents a 20% increase in online capacity since 2005
  6. 6. Capital costCapital cost Capital Costs for new geothermal plants: $2,900 to $3,500 per kw installed (2005 dollars) o&m Costs for existing geothermal plants: 2.0 to 2.5 ¢/kwh
  7. 7. Advantages of Geothermal PlantAdvantages of Geothermal Plant  Significant coSt Saving : geothermal energy generally involveS low running coStS Since it SaveS 80% coStS over foSSil fuelS and no fuel iS uSed to generate the power.  reduce reliance on foSSil fuelS : dependence on foSSil fuelS decreaSeS with the increaSe in the uSe of geothermal energy. with the Sky-rocketing priceS of oil, many countrieS are puShing companieS to adopt theSe clean SourceS of energy.  environmental BenefitS : Being the renewaBle Source of energy, geothermal energy haS helped in reducing gloBal warming and pollution. moreover, geothermal SyStemS doeS not create any pollution aS it releaSeS Some gaSeS from deep within the earth which are not very harmful to the environment.
  8. 8. LIMITATION OF GEOTHERMAL PLANTLIMITATION OF GEOTHERMAL PLANT  High Installation Costs :  To  get  geothermal  energy,  requires  installation  of  power plants, to get steam from deep within the earth and this require huge one  time investment and require to hire a certified installer and skilled staff needs to  be recruited and relocated to plant location. Moreover, electricity towers, stations  need to set up to move the power from geothermal plant to consumer.   Suited To Particular Region : It is only suitable for regions where temperature  below the earth are quite low and can produce steam over a long period of time.  For this great research is required which is done by the companies before setting  up the plant.  May Release Harmful Gases : Geothermal sites may contain some poisonous  gases and they can escape deep within the earth, through the holes drilled by the  constructors.
  9. 9. CONCLUSIONCONCLUSION  Improvements to existing geothermal facilities are worth  considering  if  less  than  the  cost  of  a  new  plant,  i.e.  capital  costs  less  than  about  $2,900  per  kW  improvement.  Operation & maintenance savings of a fraction of a cent  per kWh can be significant in comparison to total O&M  in the range of 2.0 to 2.5 kWh.
  10. 10. CONCLUSIONCONCLUSION  Improvements to existing geothermal facilities are worth considering if less than the cost of a new plant, i.e. capital costs less than about $2,900 per kW improvement.  Operation & maintenance savings of a fraction of a cent per kWh can be significant in comparison to total O&M in the range of 2.0 to 2.5 kWh.

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