GEOTHERMAL

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GEOTHERMAL

• Angelina Genelow, Nathan White, Brandon McMurphy,
  Paige Bronsburg

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THREE TYPE OF GEOTHERMAL

• Flash steam plants are the most common in use
  today. They use water reservoirs that are more
  than 360 degrees. A well is dug in the ground and
  the water flows up towards the surface decreasing
  the pressure and turning into steam which is used
  to turn a turbine and generate electricity.
• Dry Steam power plants use underground steam to
  turn a turbine. Geysers are an example of dry
  steam energy that can be harnessed to produce
  electricity
• Binary Cycle power plants use water at lower
  temperatures from 225 to 360 degrees to boil a
  liquid with a low boiling point. The liquid is
  vaporized and used to turn a turbine and generate
  electricity. The water is then piped back through
  the ground and reheated. The water and other
  liquid are separated in a closed system.

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ADVANTAGES

• Clean, sustainable, and renewable.
• Can be used just about anywhere.
• Helps local economies.
• Conserves fossil fuels.

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AGREE OR DISAGREE?

• Many people agree that this can be an effective
  alternative energy. It is very efficient the only
  downfall would be the expense of drilling the
  well, but eventually it will pay for itself.

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PROBLEMS

• Arsenic, mercury, and ammonia are some other
  hazardous materials that can be exposed with
  geothermal energy.
• Hydrogen Sulfide is one gas that can come up.
  This gas is extremely hard to dispose of.
• One major problem would be that this can cause
  earthquakes.
• Can only be used for energy to the surrounding
  area.
• Before an area can begin construction the land
  must be surveyed. This survey can take years to
  complete.
• This is also very costly to build.

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LAWS AND REGULATIONS

• For the dry steam power plants geysers which
  could be used to produce electricity are
  protected from development. For example the
  geysers in Yellowstone National Park are seen as
  a national tourist attraction and are therefore
  protected by the government from geothermal
  energy production.

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CAN GEOTHERMAL RUN OUT?

• Hot dry rock resources occur at depths of 3 to 5
  miles everywhere beneath the Earth's surface and
  at lesser depths in certain areas. This means
  that geothermal energy will last as long as the
  earth has a core. Because of the presence of the
  core, the area below the surface is constantly
  heated, which means the geothermal heat is
  completely renewable.

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QUESTIONS?