5c The Importance thing in Energy Efficiency in Fuel car.pptx

Energy efficiency is the measure of the useful energy produced compared to the energy converted to low quality--- usually heat.
Energy conservation is Implementing new technology to do same work using less energy.
Heating homes more efficiently
Driving more efficient cars
Lightning spaces more efficiently
SAVES $$$, produces less pollution, reduces CO2
the condition of Energy conservation in US:
84% of commercial electricity is wasted in U.S.
Energy conservation:
41% of energy is automatically wasted due to 2nd Law Of Thermodynamics
43% is wasted unnecessarily
Some energy efficient models may cost more up front, but save money in the long run.
Measure of how much useful energy we get from energy resource after subtracting the energy wasted.
How much energy you get out given ALL the wasted energy.
How can industry save energy:
Cogeneration – combining heat and power systems
Improving electric motor efficiency (consumes 1/4th of energy)
Improving light fixtures

1. Section 1: The Importance of Improving Energy Efficiency What is energy efficiency? How much energy do we waste? What is life cycle cost? What is net energy efficiency?

2. What is energy efficiency? Energy efficiency is the measure of the useful energy produced compared to the energy converted to low quality--- usually heat. Using energy to do work, not produce heat.

3. What is energy conservation? Implementing new technology to do same work using less energy. Heating homes more efficiently Driving more efficient cars Lightning spaces more efficiently SAVES $$$, produces less pollution, reduces CO2

4. Energy Conservation 84% of commercial electricity is wasted in U.S. 41% of energy is automatically wasted due to 2 nd Law Of Thermodynamics 43% is wasted unnecessarily

5. Advantages of Reducing Energy Waste

6. The Importance of Improving Energy Efficiency Energy efficiency Fig. 18-3 p. 381 Net energy efficiency Least Efficient Incandescent lights Internal combustion engine Nuclear power plants

7. Energy Efficiencies (Fig. 18-5 p. 381)

8. Life Cycle Costs Initial Cost plus the lifetime cost. Some energy efficient models may cost more up front, but save money in the long run. Civic Hybrid vs. Conventional Gas

9. Net Energy Efficiency Measure of how much useful energy we get from energy resource after subtracting the energy wasted. How much energy you get out given ALL the wasted energy.

10. Comparing Efficiency of 2 Types of Space Heating

11. Section 2: Ways to Improve Energy Efficiency Key Concepts How can we save energy in industry? How can we save energy in transportation? How can we design buildings to save energy? How can we save energy in existing buildings? Why are we still wasting so much energy?

12. Ways to Improve Energy Efficiency Cogeneration Efficient electric motors High-efficiency lighting Increasing fuel economy Alternative vehicles Insulation Plug leaks

13. How can industry save energy? Cogeneration – combining heat and power systems Improving electric motor efficiency (consumes 1/4 th of energy) Improving light fixtures

14. How can we save energy in transportation? CAFÉ Standards need to be increased. Increase to 40 mpg in 10yrs would cut consumption in half (could eliminate imports from Middle East)

15. Average Fuel Economy of New Vehicles Sold In U.S.

16. Price of Gas in 1993 Dollars

17. Hybrid and Fuel Cell Cars Hybrid electric-internal combustion engine Fig. 18-9 p. 385 Hybrid-electric cars are powered by a battery and a small ICE that recharges the battery.

18. Toyota Prius

19. Fuel Cell Cars Fuel cell cars run on hydrogen and produce little pollution. Combine hydrogen and oxygen to produce electricity and water vapor. Ford Focus Fuel Cell Car

20. Fuel Cells

21. GM’s prototype future fuel cell car. No engine noise, no pollution, no greenhouse gasses.