Transcript GEOTHERMAL - srjh

By: Katie Kirkholder
Molly Normandin
Zack Small
Tanner Brooks 7B
Where does it come from?
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The most abundant place to find geothermal
energy is Iceland.
Geothermal energy is found in the the form
of volcanoes, hot springs, and geysers
It can also come from miles under ground in
the core of the earth. It heats underground
water until it turns into steam. The steam
bursts through a crack or hole in the Earth’s
crust as a geyser or hot spring.
http://www.engineering.com/Videos/VideoPlayer/tabid/4627/videoId/649/geothermal-energy-process.a
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What is Geothermal Energy?
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 Geothermal energy is heat stored within the earth.
 Geothermal energy is clean, reliable, and cost
effective.
 It’s availability is limited to areas near tectonic plates
such as California and Nevada.
Using the Energy
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 Geothermal energy is used in many ways such as;
heating hot water and to generate electricity to
power homes and industries.
 People also use geothermal energy when they bathe
in hot springs.
 Some people believe that bathing in the warm water
and breathing the vapors from the hot spring can
cure some diseases.
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How it is made?
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 The energy is made deep beneath the earth’s crust.
 The earth has many layers, one being the iron core, which
is the center of the earth.
 Geothermal energy is not “made”, It is harvested from
geothermal heat vents, which are mostly found in
California, Nevada, and Oregon.
 If the harvesters or the people collecting the energy find a
very hot rock, they can pour water to create the steam
they need to create the electricity.
Pros

 It is a sufficient and cost efficient form of energy.
 There are lots of geothermal heat vents in hot places,
though this also may be a con because they can still
get solar energy from the sun in these hot places.
 Another advantage of geothermal energy is the
environment friendliness.
 A very important pro is the reliability of this form of
energy
Cons

Some of the environmental dangers of geothermal
energy are:
 Land subsidence
 Production of waste water with high mineral content
 Disposal of hot water in the conversion process
 Then there is the release of toxic gases such as:
Hydrogen sulfide, ammonia, and Boron.
The cost of geothermal
energy

 At The Geysers, power is sold at $0.03 to $0.035 per
kWh. A power plant built today would probably
require about $0.05 per kWh. Some geothermal
energy plants can charge more.
Ways it can be
distributed

Vertical Loop
Open loop
Horizontal loop
Pond loop
The way it is
distributed.

 Geothermal heat pumps are environmental. They
generate no on site emissions and have the lowest
emission among all heating and cooling
technologies.
 Geothermal heat pump systems, also known as
"geothermal," are the most energy-efficient,
environmentally clean, and cost-effective space
conditioning systems available, according to the
Environmental Protection Agency.
Fun Facts

 Geothermal energy supplies less than 10% of the
world's energy.
 Geothermal energy is sustainable because hot water
can be re-injected into the ground.
 Geothermal energy can be found in the form of
volcanoes, hot springs and geysers.
 Geothermal energy is used since ancient times in
form of hot water.
 Geothermal energy could produce 10 percent of US
electricity by the year 2050.
More Fun Facts

 Geothermal energy can be easily found and exploited
along the "Ring of Fire" region.
 Geothermal energy is extremely efficient (almost 100%)
energy source where the only real sources of losing
energy is from turbine friction.
 Geothermal energy has only one real problem and that is
the lack of easily accessible sites.
 Geothermal energy's advantage is also the fact that
geothermal power plants run continuously day and night
with an uptime typically exceeding 95%.
Time to take a Quiz!

 http://library.thinkquest.org/05aug/00281/english
/stopics/interactive/geoquiz.htm
Use the information you learned in the power point to
answer these simple 5 questions.
Bibliography
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"Geothermal." EIA Energy Kids -. Web. 11 Mar. 2012.
<http://www.eia.gov/kids/energy.cfm?page=geothermal_home-basics-k.cfm>.
"Geothermal Energy Facts." Alternative Energy Sources for Your Home. Web. 11 Mar. 2012.
<http://www.affordable-alternative-energy.com/geothermal-energy-facts.html>.
"Geothermal Energy Facts." Natural & Renewable Energy Sources. Web. 11 Mar. 2012.
<http://www.clean-energy-ideas.com/articles/geothermal_energy_facts.html>.
"Geothermal Energy Quiz." ThinkQuest. Oracle Foundation. Web. 11 Mar. 2012.
<http://library.thinkquest.org/05aug/00281/english/stopics/interactive/geoquiz.htm>.
Gibson, Diane. Geothermal Power. Mankato, MN: Smart Apple Media, 2002. Print.
"PDFCLOUD.NET." Geothermal Energy Facts. Web. 11 Mar. 2012. <http://conserve-energyfuture.com/GeothermalEnergyFacts.php>.
"Puna Geothermal VentureHawaii." Puna Geothermal Venture: Where Does Geothermal Energy
Come From? Web. 11 Mar. 2012.
<http://www.punageothermalventure.com/Faqs/8/where-does-geothermal-energycome-from>.
Web. <www.blogspot.com>.
Web. <www.ucsusa.com>.
"Welcome to Our Web Page." SCIENCE KIDS. Web. 11 Mar. 2012.
<http://www.sciencekids.com/>.