GEOTHERMAL ENERGY

DEFINITION

• Geo=earth
• Thermal=heat
• Energy=the strength required for sustainable activity
• Energy/power extracted from beneath the earth

BACKGROUND

• Traditonally used for bathing and heating purposes by the American Paleo Indians.
• In 1921, John D. Grant bulit the first geothermal power plant in the U.S.
• Used geothermal energy for water harvesting at Eburra and Suswa
• In the 1960s, the first US large scale plant was constructed
• Has been used for over 10,000 years

CURRENT USES

• Heat pumps
• Electricity generation
• Direct applications

ENERGY

• Geothermal energy is heat from the earth
• Below the earths crust, there is a layer of hot and molten rock called magma.
• Heat is continually produced there
• Heat pumps can tap into this resource to heat and cool buildings
• Heat pump systems consist of heat pump, air delivery system, heat exchanger

ENERGY CONT.

• The amount of heat within about 33,000 feet of Earths surface
• Contains 50,000 times more energy than all oil and natural gas resources
• It is almost an unlimited amount of heat generated by earths core
• Available resources are primarily in Western States/Alaska, Hawaii
• Areas with highest underground temps are regions w/ active young volcanos

3 TYPES OF THE ENERGY

• Dry steam: takes steam out of ground and uses it to drive turbine
• Flash: pulls deep, high-pressure hot water into cooler, low-pressure water
• (Steam that results from this process is used to drive turbine)
• Binary: hot water is passed by a secondary fluid to turn to vapor
• (This drives the turbine)

BENEFITS

• It is a renewable resoruce
• It is good for 15 years or more
• Not a lot of money
• It has no pollution
• It has job creations

DRAWBACKS

• It is not widely used, there is unavailability if equitment
• Not enough skilled man power
• Not easily transported
• High installation costs
• Only suited to particular regions

FUTURE

• Move the earth to clearner and more sustainable energy
• Keep producing more electricity
• Technologys will improve
• More energy will be tapped from the earth
• Renewable source, so it will never run out

QUESTIONS

• Is this source renewable or nonrenewable?
• What is one current use of geothermal energy?
• Where is the energy found?
• How many types of this energy are there?
• What benefits are there?

BIBLIOGRAPHY

SONI'S

• Conserve-energy-future.com
• Renewableenergyworld.com
• C2es.org
• Ucsusa.org
• Geothermal Power by Josepha Sherman

LAUREN'S

• Renewableenergyworld.com
• Ucsusa.org
• Conserve-energy-future.com
• Enviornment.nationalgeographic.com
• Energy.gov

PAITYN'S

• Dkut.ac.ke
• Energy.gov
• Conserve-energy-future.com
• Geothermal.marin.org
• Dougre.com

Hope you know more about geothermal energy and enjoyed our presentation