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Geothermal Energy, Tapping the Earth’s Internal Heat Tim Mervine Anna Chandler .
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Transcript of Geothermal Energy, Tapping the Earth’s Internal Heat Tim Mervine Anna Chandler .
Geothermal Energy, Tapping the Earth’s Internal Heat
Tim MervineAnna Chandler
http://geothermal.marin.org/GEOpresentation/sld050.htm
Main Goal
Provide energy using the natural heat of the Earth
Goal is derived from the name Geo means Earth Thermal means Heat
Impact
Don’t burn fossil fuels Produce less than 1% of the CO2
of a fossil fuel plant Clean the air of hydrogen sulfide 97% less acid rain, causing sulfur
compounds than fossil fuel plants Water is reheated and reused
Dry Steam Power Plants
Rising steam turns the turbine After condensing, water goes
down to be reheated Dry steam plants are rare
Flash Steam Power Plants
Hot water rises Pressure decreases as it rises Steam is given off and used to
turn the turbines Afterwards the steam condenses
and goes to be reheated
Binary Power Cycle Plant
Hot water rises Heat and liquid with a lower
boiling point Second liquid turns to steam to
turn the turbine Water goes to be reheated while
the second liquid condenses
Possible technological obstacles
Not being able to drill access geothermal hotspots
Corrosion and scaling of pipes
Political/economical obstacles
Plants are expensive to create Geysers that fall on federal
protected land are not able to be used
Geothermal hot spots located in oceans have questionable land ownership
Negative environmental impacts
Very little carbon emissions
Generation of electricity from the geothermal plants has ended geyser eruptions of second and third largest geysers in the 50 states
http://www.eia.doe.gov/cneaf/solar.renewables/renewable.energy.annual/appd.html