braden and matthew. geothermal energy is the heat from the earth it is clean and sustainable
TRANSCRIPT
Braden and Matthew
Geothermal energy is the heat from the Earth
It is clean and sustainable
Reduce the amount of fossil fuels being used
The creation of new jobs
No pollution Cheaper than fossil fuels
Expensive installation costs
Only available in some regions
Harmful gases could be released
Transportation of geothermal energy is difficult.
Shallow ground Hot water and hot rock found a few
kilometers beneath the surface of the Earth Extremely hot temperatures of molten rock
called magma
The average temperature of the upper 10 feet of the Earth’s surface ranges from 10° to 16° Celsius.
Wells can be drilled into hot water and rocks a few kilometers below the Earth’s surface.
Magma may come close to the surface, if this magma heats a water source, useable geothermal energy is created.
Worldwide use
Geothermal Energy can be found almost anywhere in Canada for direct use of heat.
Geothermal energy for electricity generation can be found in B.C, North Western Canada, and the Prairies.
Due to the Canadian shield, Ontario is a hard place to create electricity through geothermal power plants.
It is possible to use large bodies of water and the heat from the ground to use to heat and cool buildings
Geothermal energy from steam and hot water reservoirs is most common.
Converting geothermal energy directly to heat.
Cold water circulates through hot rock and heats up.
The hot water powers a turbine which powers a generator.
Power plants for geothermal energy are expensive due to new technology and deep wells that are required.
Lower cost of long periods of time.
There are three main ways to generate geothermal electricity.
The three different power plants are Dry steam Plant, Flash steam Plant, and Binary Plant
Dry steam power plants use underground resources of steam that are pumped up into the turbine to generate electricity.
Flash steam power plants use underground resources of hot water that are above the temperature of 182 Celsius. This water is then
turned into steam to power a turbine.
Binary cycle power plants operate with water between 107-182 Celsius. This water is used to boil a second liquid to power the turbine to create electricity.
In 2009,geothermal Energy was 5% of the total amount of renewable energy used by the US