Sustainable Energy
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Flashcardssolar power, wind power, hydroelectric energy, marine energy, geothermal energy, biomass
Six types of sustainable energy
66.6%
What percent of energy used in the US do fossil fuels generate?
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solar power, wind power, hydroelectric energy, marine energy, geothermal energy, biomass
Six types of sustainable energy
66.6%
What percent of energy used in the US do fossil fuels generate?
coal, natural gas, oil, petroleum, liquefied petroleum gas
Five main types of fossil fuels
3.9%
What percent of energy used in the US does solar power generate?
India, The Kamuthi Solar Power Project, 10
Where is the largest photovoltaic power station in the world located? What is it called? How many square miles does it cover?
Photons knock electrons free from atoms
How do solar panels create energy?
a magnetic field
What is used to direct the free-flowing electrons?
monocrystalline, polycrystalline, thin-film
Three types of solar panels
Monocrystalline, silicon, 21.5%
Solar panel type, element(s) used, efficiency rating
Polycrystalline, silicon, 13-16%
Solar panel type, element(s) used, efficiency rating
Thin-Film, calcium telluride, amorphous silicon, and copper indium gallium selenide, 15-16%
Solar panel type, element(s) used, efficiency rating
10.3%
What percent of utility-scale power generated in the US is produced by wind power?
California, Alta Wind Energy Center in California, 586, 3rd
Where is the largest wind farm in the US? What is it called? How many turbines does it have? How does it rank in the world?
China, Gansu Wind Farm, 7,000
Where is the largest wind farm in the world? What is it called? How many turbines?
573,000
How many birds are killed yearly by wind turbines?
888,000
How many bats are killed yearly by wind turbines?
horizontal-axis, vertical-axis
Two types of wind turbines
Horizontal-axis
Which type of wind turbine is more efficient?
20 stories, 100ft
How many stories tall are the largest horizontal-axis turbines? How long are their blades?
100ft, 50ft
How tall are the largest vertical-axis turbines? How wide are they?
They can catch wind from any direction
While vertical turbines are less efficient, they have an advantage in one way because…
Georges Darrieus
The French engineer who invented vertical-axis turbines in 1931
Rotor Darrieus H, Rotor Darrieus Helicoidal
What are the two main new versions of the Rotor Darrieus model?
Sigurd Johannes Savonius
Who invented a new design for the vertical-axis turbine that uses scoop-shaped blades in 1922?