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Bioenergy
energy obtained from biomass sources like wood, charcoal, crops, and animal waste
Biogas
methane and other gases produced by decomposition are captured
Co firing
biomass sources mixed with coal and burned
Gasification
biomass is vaporized, producing methane, CO, CO2, hydrogen
Biofuel
liquid fuel used primarily to power automobiles
Ethanol
fuel produced by fermenting carbohydrate rich crops (corn, sugarcane), increased land use by agriculture, drives up food prices
Biodiesel
fuel made from vegetable oil, used cooking grease and animal fat
What can be used to produce biofuels
Algae, grown in tanks to feed on wastewater
How is hydrogren fuel generate from water
passing an electric current through water generates hydrogen and oxygen.
What are the pros of hydrogen fuel
energy efficient, nontoxic, could produce less greenhouse gases
What are the cons of hydrogen fuel
lack of infrastructure, explosive, leaking could deplete stratospheric ozone
Cogeneration
combined heat and power, the simultaneous production of two or more forms of energy from a single fuel source
Passive solar energy collection
buildings are designed to absorb sunlight in winter (warming) and reflect/ release solar energy in summer (cooling)
Active solar energy collection
flat solar plate absorbs heat energy and warms a fluid
Energy Star Program
EPA/ Dept of Energy, a program to provide objective information about energy use and energy efficiency.
CAFE (Corporate Average Fuel Economy)
federal program requiring cars, light trucks, and heavy trucks to meet fuel economy standards, measured in miles per gallon
Hybrid Vechile
combine an internal combustion engine and battery