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42 Cards in this Set

  • Front
  • Back
Example of an energy efficient house design
Rocky Mountain Institute in Colorado

Prolongs fossil fuels, creates local jobs, reduces pollution and environmental degradation, and raises the net energy yield

Effects of reducing energy waste
The country that is mass producing the Build Your Dreams plug-in hybrid automobile
China
The weakness of electric cars
Battery longevity
Regulates fuel efficiency in a fleet of cars
CAFE
Absorbs and stores heat from the sun directly within a well-insulated structure.
Passive solar energy
Captures energy from the sun by pumping heat-absorbing fluid through special collectors.
Active solar energy
Using combined heat and power; When two useful forms of energy are produced from the same source.
Cogeneration
The main ingredient in most solar cells
Silicon
Moderate environmental impact, No direct emissions of air pollutants, and lower costs w/ a natural gas back-up
Advantages of solar energy- for high heat and electricity
Low net energy and high costs, high water use for cooling, and needs a back-up system for cloudy days
Disadvantages of solar energy- for high heat and electricity
The world's fastest growing way to produce electricity
Solar cells
The world's leading renewable energy source used to produce electricity
Hydropower
The country with the greatest amount of hydroelectric plants
Norway
The country in which most of their energy comes from geothermal power plants
Iceland
Moderate to high net energy, low cost, low emissions of air pollutants, large untapped potential
Advantages of large-scale hydropower
Large land disturbance and displacement of people, high methane emissions from rapid biomass decay, disrupts downstream ecosystems
Disadvantages of large-scale hydropower
An example of small-scale hydropower
Tidal and Wave energy
Moderate net energy yield, little or no direct emissions of air pollutants, easy to install & move, and prices are coming down due to competition
Advantages of solar cells
Needs electricity storage system or backup, needs access to sun, solar-cell power plants could disrupt desert ecosystems.
Disadvantages of solar cells
The most energy efficient country
Denmark
Moderate to high net energy, widely available, low cost, little or no direct emissions of air pollution, easy to build and expand.
Advantages of wind power
Needs a backup storage system, visual and noise pollution, can kill birds and bats if not properly designed or located.
Disadvantages of wind power
Animal manure, wood, charcoal, crop residues
Examples of biomass
Widely available in some areas, moderate costs, no net carbon dioxide increase if burning & replanting are sustainable
Advantages of using solid biomass
Moderate to high environmental impact, increased carbon dioxide if burning & replanting are unsustainable, can cause solid erosion, water pollution & loss of wildlife habitat.
Disadvantages of using solid biomass



Reduced CO and CO2 emissions, high net energy yield for oil palm, reduced hydrocarbon emissions, and better mileage

Advantages of biodiesel fuel
Increased nitrous oxide emissions and smog, low net energy yields for soybean, competes with food for cropland, and clearing ares for plantations reduces biodiversity and increases CO2
Disadvantages of biodiesel fuel
Some reduction of CO2 emissions & high net energy yield (sugarcane, switchgrass and bagasse), & potentially renewable
Advantages of ethanol fuel
Low net energy yield, higher CO2 emissions, and competes with food crops (corn)
Disadvantages of ethanol fuel
Moderate net energy & efficiency and low cost at accessible sites, and Lower CO2 emissions than fossil fuels
Advantages of geothermal energy
Scarcity of suitable sites, noise and some carbon dioxide emissions
Disadvantages of geothermal energy
Can be produced from plentiful water at some sites, no direct CO2 emissions if produced from water, good substitute for oil, and high efficiency in fuel cells.
Advantages of Hydrogen fuel
Negative net energy yield, CO2 emissions if produced from carbon-containing compounds, high costs require subsidies, and needs a storage and distribution system
Disadvantages of hydrogen fuel
Passing electricity through water, stripping it from methane, and a chemical reaction involving coal, oxygen, and steam
Methods of producing hydrogen gas
Most storage options in most forms is highly flammable
Hydrogen gas as a fuel
Experts suggest in the next few decades we will probably shift from our current model of producing electricity through a
De-centralized micropower system
Dispersed, small, local power generating systems
Micropower
One or more groups of these suitcase sized generators can be placed in any stream or river without altering its course and be used to produce electricity around the clock
Micro-hydropower generators
Uses the temperature differential between the surface and 3-6 meters underground to heat and cool a house.
Geothermal heat pump
Can be used in stationary applications like generating electricity or heating buildings, and for powering vehicles, buses, and trains.
Fuel cells

The world's largest producer of geothermal energy

United States