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					Geothermal apower
     Quic kTime™ and
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     by: Eli Van Wing
         D-Block
          2/8/08
          Geothermal power facts
•   Geothermal power produces less than 1% of our consumed energy
•   Greenhouse gas emisions are equal to 5% of that of fossil fuel plants but with emission
    controlling systems they can be 0.1%that of fossil fuels
•   Prince Piere Ginori Conti tested the first geothermal generator in Lardello, Italy
•   The largest Geothermal plant is Geyser springs, California and produces over 750
    megawatts of power
•
                                             QuickTime™ an d a
    Geothermal plants are built in Tectonically active areas, because it makes it easier to
    access the earths heat. TIFF (Uncompressed) decompressor
•                                 are resources, to see too large of a plant
    Geothermal energy is a renewableneed ed however if this p icture . is built in a
    particular area then the earth can cool and stop producing as much energy, however, over
    time it will replenish.
            The Geysers
• Largest Geothermal plant in the world
• Produces 850 MW of power a day
                    QuickTime™ and a

• Uses treated wastewater from Lake
                      decompressor
              are neede d to see this picture.


  County to create steam
• Uses dry steam
• Owned by calpine
         4 types of power


                   Q uic kT ime™ and a

•   Dry steam    n
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           ar e neede d t o se e t his pict ure.



•   Flash steam
•   Binary-cycle
•   Enhanced Geothermal System
          Dry steam facts
• Simplest method of Geothermal energy
• Uses steam above 235°C, Steam has
               Quic kTime™
              droplets(dry) and a
  no water compress ed) decompres sor
   TIFF ( U n
      ar e neede d to se e this picture.
• This method is used in the Geyser
  Springs plant in California which is the
  largest Geothermal energy producer in
  the world
Dry steam, how it works
           Hot steamform turbine goesis used to power turbines
           Generator from the ground
           Electricity powers lightbulb into generator
           System::lightbulb Surroundings: turbines
           System:steam          Surroundings: turbines
           System generator Surroundings: generator


          Quic kTime™ and a
TIFF ( Uncompress ed) decompr essor
                     ee
   ar e neede d to sPE this picture.
           KE

  system
                   as heat ---- phae
                            as
                  motion         change
  surroundings
                   as
                                ----
                  motion
           Flash steam facts
• Uses water under the earth that is under such
  high pressure it cannot convert to steam
• As water rises (Uncompressed) decompressor
              TIFF
                      the surface
                   to QuickTime™ an d a pressure drops
                  “flashes” into steam
  and the waterare need ed to see this p icture .
• Uses liquid water above 182°C
• These are the most common type of
  Geothermal generators in use today
Flash steam, How it Works
   Any water is drawn from goes intogets pumped back into the to power turbines
      Electricity “flashed” lightbulb
         Generator powers into steam generator
 Liquid liquid notform turbineunderground and flashed into steam earth
  System: water
     System:
       System:Lightbulb
                   Surroundings:turbines turbines
                   Surroundings:earth
 System:watergenerator    Surroundings:Generator
                          Surroundings:


                         QuickTime™ and a
                TIFF (Uncompressed) decompressor
                  are needed to see this picture.
                          KE              PE

           system
                           as heat  as
                                   ----
                          motion          phase
           surroundings
                            as heat      ----
                                          change
           surroundings
                            as           ----
           surroundings
                            as
                          motion          ----
                          motion
         Binary cycle facts
• Uses the coolest water of the three at
  from 107-182°C
• The other liquid used is typically Iso-
                        QuickTime™ and a
               TIFF (Uncompressed) decompressor
                  are needed to see this picture.

  Butane or Iso-Pentane
• Most Geothermal plants planned for
  construction are Binary-cycle
       Binary-Cycle how it works
   The Iso-Pentane or form turbine goes into and used to turbines
                          drawn from the earth
Hot water and steam isIso-Butane steam is used to powerheat another liquid with a lower
boiling point   Generator
              Electricity powers lightbulb     generator
   System:steam            Surroundings: Turbine
              System: generator
System:water System:Lightbulb         Surroundings:Generator
                                     Surroundings: turbines
                         Surroundings:Iso-Pentane, or Iso-Butane



                   QuickTime™ an d a
          TIFF (Uncompressed) decompressor
             are need ed to see this p icture .
                                     KE
                                     KE              PE
                                                     PE

                     system
                     system
                                      as heat  as
                                      as heat ----
                                               as
                                     motion          phase
                                                     phase
                                                     change
                     surroundings
                                      as       ---- change
                     surroundings
                     surroundings
                                     motionheat  as
                                      as
                                      as       ----
                                     motion          phase
                                                     change
Enhance Geothermal Systems
• Rather than using water already in the
  earth EGS pump water into the earth
                      QuickTime™ and a
                  can be decompressor
  and thereby (Uncompressed)built anywhere
             TIFF
               are needed to see this picture.
• It requires deeper drilling but does not
  have to be in tectonically active areas
• Other than pumping in its own water it
  opperates the same way as Dry steam
    EGS, how it works
    Water issteam turbine goes into used to power turbines
      Generator powersthe groundis
        Hot form from lightbulb
   Electricitypumped into the earth generator
    System:water
     System:Lightbulb Surroundings: turbines
       System:steam      Surroundings:
                          Surroundings:Generator
   System: generator Surroundings:Earthturbines

         QuickTime™ an d a
TIFF (Uncompressed) decompressor
   are need ed to see this p icture .
                          KE             PE

          system
                           as heat  as
                                   
                                    ----
                          motion         phase
                                         change
          surroundings
                           as       ----
          surroundings
                           as
                          
                          motionheat ----
                          motion
            Is it renewable
• Yes, the earth has massive stores of
  heat and even if we cool an area it will
              Quic kTime™ and a
  replenish over time sor
                decompres
         ar e neede d to s ee this picture.
              Is it sustainable
• Maybe
• If too large of a site is built in a particular
                     QuickTime™ be cooled faster
  place then the earth can and a
                      decompressor
               are
  than the heatneede d to see this picture. left alone it
                   regenerates, but if
  will replenish
• Or, If water doesn’t seep into the ground as
  fast as it is being pulled out then it can be
  depleted, however treated waste water can
  be used to replenish supplies
                        Bibliography
•   http://geothermal.marin.org/
•   http://www.geysers.com/history.htm
•   http://msnbcmedia4.msn.com/j/msnbc/Components/Photos/061116/061116_geothermal_hlr
    g_9a.hlarge.jpg
•   http://www.energywhiz.com/9-12/gallery/site02/geothermal%20power%20plant.jpg
•   http://www.energywhiz.com/9-12/gallery/site02/geothermal%20power%20plant.jpg
•   http://www.mastercylender.net/photos/iceland/images/geyser.jpg
•   http://www.greenjobs.com/Public/images/geyser-dry-steam-geothermal.jpg
•   http://www.txucorp.com/responsibility/education/generation/images/geo_the.gif
•   http://mining.ubc.ca/cerm3/steamy%20stream.jpg
•   http://www.americansforamericanenergy.org/Portals/AAE/images/Geothermal_pipes.JPG
•   http://www.utpb.edu/ceed/renewableenergy/flash_steam_plant.jpg
•   To find out more go to the Geysers Visiting center.
•   http://goopstechnologies.com/EarthAS17.jpg
                                   Yay, You’re done!


           Qui ckTi me™ and a
                                                      Quic kTime™ and a
TIFF (Uncompresse d) d eco mpressor
   are ne eded to see this pi cture.
                                            TIFF (Uncompres sed) dec ompress or
                                               are needed to s ee this pic ture.




                      http://images.jupiterimages.com/common/detail/23/19/22741923.jpg
                      http://fcs.sdstate.edu/family_resource_network/Lending_LibraryPics/Inventory%20Pictures/Mr.%20Potato%20Hea
                      d%20462.jpg

				
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