1. Achieving Energy Sustainability
Chapter 13
Achieving Energy Sustainability

2. What is renewable energy?
_____________________ can be rapidly regenerated, and some can never be depleted, no matter how much of them we use.
____________________ – Wind, solar, hydro, geothermal
____________________________ – wood and biofuel

4. Use of renewable energy
Worldwide - _______ Renewable Energy Use
US – ____ of Energy is Renewable

5. How can we use less energy?
__________________________- finding ways to use less energy. For example, lowering your thermostat during the winter or driving fewer miles.
___________________________- getting the same result from using a smaller amount of energy.
______________________ – application of scientific knowledge to practical purposes.
_______________________________ of energy efficient technology.

7. Benefits of Conservation and Efficiency
Many energy companies have an extra backup source of energy available to meet the _______________, the greatest quantity of energy used at any one time.
_____________________________- utility customers can pay less to use energy when demand is lowest and more during peak demand.

8. Sustainable Design
Improving the _______________ of the buildings we live and work in.
Examples:

10. Passive Solar Energy
Using ____________________________ can lower your electricity bill without the need for pumps or other mechanical devices.
Building the house with windows along a ______________ wall which allows the Sun’s rays to warm the house would be an example.

13. Biomass is energy from the Sun
___________________is the ultimate source of almost all types of energy

15. Modern Carbon vs. Fossil Carbon
Many people are confused how burning biomass such as wood is better then burning _______________.
The carbon found in biomass was in the _______________________________________________, taken in by the tree, and by burning it we put it back into the atmosphere
Burning coal is carbon that has been ____________________________and was out of circulation until we began to use it. This results in a rapid increase in the concentration of carbon dioxide in the atmosphere.
Are modern carbons “___________________”?
Carbon Neutral are activities that ________________ the overall CO2 concentrations in the atmosphere.

16. Biomass
_______________________- used to heat homes throughout the world.
____________________________ timber than can be replace by growth (not sustainable).
________________________________________- used as substitutes for gasoline and diesel fuel.

17. Biomass
______________- is an alcohol derived from plants (US is world leader in production, then Brazil).
_________________ is a natural oil extracted from algae, soybeans, palm, vegetable oil.
_______________________are use with modified engines (SVO, straight vegetable oil).
Ethanol and Biodiesel make up less than ______ (0.6%) of US energy supply.

19. The kinetic energy of water can generate electricity
____________________- electricity generated by the kinetic energy of moving water. This is the second most common form of renewable energy in the world.
Georgia’s, _____ Hydro Hydroelectric Production :
__________ of Georgia Energy production
_________ Hydro plants in Georgia.

21. Types of hydroelectric power systems
_____________________________- water is held behind a dam and runs through a channel before returning to the river.
______________________- water is stored behind a dam and the gates of the dam are opened and closed controlling the flow of water.
_________________- the movement of water is driven by the gravitational pull of the Moon.
Sustainability?
Benefits?
Environmental Impacts?

22. The Sun’s energy can be captured directly
_________________________- capturing the energy of sunlight with the use of a pump or photovoltaic cell and generating electricity.
______________ Water Heating Systems
________________________________– solar panels (12-20% conversion efficiency, but are improving up to 40%)
_______________________ Solar Thermal Electricity (CST)
____ Solar Plant in Georgia
Benefits?
Drawbacks?
Recycling?

23. The majority of manufacturers offer the ______________ standard solar panel warranty, which means that power output should not be less than _____ of rated power after ____ years.

26. Earth’s internal heat produces geothermal energy
_________________- using the heat from natural radioactive decay of elements deep within Earth as well as heat coming from Earth.
_____ Geothermal Plants in the US (____ in Georgia)
_________ is the World Leader in Geothermal Energy Production

27. Earth’s internal heat produces geothermal energy
Geothermal Energy Plants (commercial and residential)
Mostly in ______________ United States
Ground Source _________________
Where?

30. Wind energy is the most rapidly growing source of electricity
_______________- using a wind turbine to convert kinetic energy into electrical energy.
__________ of US Energy Production
Fastest Growing Renewable Energy Source?
Benefits?
Drawbacks?

32. Hydrogen fuel cells have many potential applications
______________- a device that operates like a common battery where electricity is generated by a reaction between two chemicals.
Fuel Cell Cars?
Honda

34. Overloads and outages?
What is a _________________?
2009, a plan to invest 3.4 billion in smart grid technology.