Fossil Fuels- Non renewable Nuclear- Non renewable Renewable Resources-wind, solar, biomass Energy.
Wind and Other Renewable Energy Sources Physics 1303 3/31/03.
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Wind and Other Renewable Energy Sources Physics 1303 3/31/03
Transcript of Wind and Other Renewable Energy Sources Physics 1303 3/31/03.
Wind and Other Renewable Energy Sources
Physics 13033/31/03
Renewable Energy comes in many forms:
Wind EnergyHydroelectricGeothermalBiomassOcean Thermal
Wind Energy
Uses the kinetic energy of wind. Needs high wind speed. Maximum efficiency is 59%. Practical efficiency is nearly 50%.
Wind Resource Map of the US
Desert Sky
Wind project Iraan, TexasOwner: American Electric PowerCustomer: CPSManufacturer: GE Wind Energy (formerly Enron)
Desert Sky
1.5 MW/Turbine 107 TurbinesMin. Wind: 8 mphMax. Wind: 56 mph
Desert Sky
Financing Depends on State Renewable Tax Incentive Program.AEI must guarantee to operate the system for 30 years
Desert Sky
ERCOT (Energy Reliability Council of Texas) maintains the electric grid for most of the state.AEI is not allowed to generate more than 100 MW
Desert Sky
Wind has some impact on the site as shown in the diagram.Source of income for ranchers.
Wind Calculation
Stop and do the wind problem.
Hydroelectric power
Energy is stored as gravitational potential energy.Electrical generators convert mechanical energy to electrical energy.
Hydroelectric power
Largest source of renewable energy in USFill with siltLoss of wild riversCatastrophic floodingSalmon breeding blocked
Geothermal Energy
Localized surface level hot spots. Geothermal energy may be exploited for local uses.Not an important global resource.
Geothermal Energy
An important resource for Costa Rica and some other countries. Not really renewable.
Biomass EnergyPlant material is burned directly or converted into a fuel. An example: Conversion of grain to ethanol and the production of gasohol (10% ethanol and 90% gasoline)
Biomass EnergyRenewable Recycles CO2Could use agricultural wasteCompetes for agricultural landLow efficiency
Ocean Thermal Energy Conversion
OTEC uses the temperature differences between the ocean surface and ocean depths to run a heat engine. Highest potential in deep tropical waters like the Gulf of Mexico.
OTEC
Second Law of Thermodynamics: Max eff. = (Thigh - Tlow )/ Tlow
So, efficiency is pretty low.
OTEC Problem
Stop and do the OTEC problem.
Wind and Renewable Energy Technologies
Do these technologies represent the dawning of a new age of sustainable development?
