1. Law of Conservation of Energy
Energy is not created or destroyed
Energy can be transformed from one form to another.

2. Energy Conversion: Changing one type of energy to another using a converter device

3. Energy conversion efficiency
Some “useful” energy is always lost when energy is converted from one form to another.
For example: 100 gallons of gas in your car- only 25% or 25 gallons actually moves your car!
25% efficient!

4. What did the other 75 gallons of gas do?
33 gallons converted to heat
29 gallons used to cool engine
6 gallons to pump air though engine
7 gallons lost to friction in engine

6. Practice…
If you put 100 gallons of gas into a car, and 30 of those gallons are used to actually move the car, what is the conversion efficiency for that vehicle?