Do Now What is renewable energy? What are some examples of renewable energy? Do you know of any...
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Transcript of Do Now What is renewable energy? What are some examples of renewable energy? Do you know of any...
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Do Now
• What is renewable energy? • What are some examples of renewable
energy?• Do you know of any local examples of
renewable energy?
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Renewable EnergyEnergy from sources that are
replenishedor are perpetually available
Sustainable EnergyRenewable energy with low
environmental impact
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How Most Renewable EnergyTechnologies Work
1. Some force moves a turbine (turbine is like a propeller)
a) Wind – moving airb) Nuclear – steam produced by nuclear reactionc) Hydropower – moving water
2. Turbine turns the generator. 3. Generator produces electricity 4. Electricity transmitted via the grid to homes.
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Wind Energy
Energy derived from the motion ofair across Earth’s surface
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What moves air across the earths surface?
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How is wind converted to electricity?
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Converting Wind to Electricity
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Gloucester MA
• Settled in 1623 (older than Boston)
• First fishing port in the USA.
• Average onshore wind speed of 16 mph
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750 feet
564 feet
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492 feet
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Gloucester Wind Turbines
• Varian Semiconductor constructed a 2.5MW 492ft wind turbine. Cost of $8 million, will save the company $1 million in electricity annually.
• Equity Industrial Partners constructed two 2.0MW turbines at a cost of $12 million, will save the company $500k annually.
• The city of Gloucester saves $500k annually, by having all electricity provided by wind.
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Solar EnergyEnergy harnessed from the sun in the form
of heat or light
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How does a solar panel generate electricity?
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Dorchester Solar Farm
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Dorchester Solar Farm
• 4,466 solar panels spread over 6 acres of land• 1500 MWh per year, saves 4,000 pounds of
SO2, 1,800 pounds of NOx, and 1.8 million pounds of CO2.
• This is the equivalent of generating electricity of 260 homes.
• Also, built upon contaminated soil, so its an environmental win/win