Unit 6 - 04 Energy Conservation

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