1. Energy Units
Calorie (old unit) Joule (J) (international unit) 1 cal = J Kilojoule (KJ) One calorie is the energy needed to raise 1g of water by 1oC

2. BTU British thermal Units
1 BTU is the heat necessary to raise 1 pound of water by 1o F
1 BTU = cal

3. power
The standard metric unit of power is the Watt. As is implied by the equation for power, a unit of power is equivalent to a unit of work divided by a unit of time. Thus, a Watt is equivalent to a Joule/second. 
 horsepower is occasionally used to describe
the power delivered by a machine.
One horsepower is equivalent to approximately
750 Watts.
1HP = 750 W

4. Is the standard unit of electricity consumption
Kilowatt hour
Is the standard unit of electricity consumption
1kWH = 3.6 x 106 J

5. Your household's monthly electric bill is often expressed in kilowatt-hours. One kilowatt-hour is the amount of energy delivered by the flow of 1 kilowatt of electricity for one hour. Use conversion factors to show how many joules of energy you get when you buy 1 kilowatt-hour of electricity.
For more information visit

6. To compare different fuels, we need to convert the measurements to the same units.
Btu Content of Common Energy Units
1 barrel (42 gallons) of crude oil = 5,800,000 Btu
1 gallon of gasoline = 124,238 Btu (based on U.S. consumption, 2011)
1 gallon of diesel fuel = 138,690 Btu
1 gallon of heating oil = 138,690 Btu
1 barrel of residual fuel oil = 6,287,000 Btu
1 cubic foot of natural gas = 1,023 Btu (based on U.S. consumption, 2011)
1 gallon of propane = 91,333 Btu
1 short ton of coal = 19,858,000 Btu (based on U.S. consumption, 2011)
1 kilowatthour of electricity = 3,412 Btu

7. In the United States, the Btu, a measure of heat energy, is the most commonly used unit for comparing fuels. Because energy used in different countries comes from different places, the Btu content of fuels varies slightly from country to country.

8. Which home used more energy?
You have a natural gas furnace in your home that used 81,300 cubic feet of natural gas for heating last winter. Your neighbor has an oil furnace that used 584 gallons of heating oil last winter.
Which home used more energy?
Natural Gas: cubic feet x 1023 BTU per cubic foot = 83, BTU
Oil : 584 gallons x BTU per gallon = 80, BTU

9. You work for an electric power company
You work for an electric power company. Your company’s power generators can run on one of two fuels: natural gas or residual fuel oil. Your job is to switch fuels when the cost of the fuel you are currently using becomes more expensive than the other fuel. This will keep costs down for you and your electricity customers. Your company’s generators are currently using residual fuel oil, but in 2010 fuel oil prices were nearly double natural gas prices. Based on the fuel costs below, you need to decide if it is time to switch to natural gas:
Natural Gas: $5.26 per thousand cubic feet / mio BTU per thousand cubic feet = $ 5.15 per Mio BTU
Residual Oil: $ per barrel / Mio BTY per barrel = $ 9.26 per mio BTU

10. For more information visit http://www. eia. gov/energyexplained/index

11. CAFe standards
The Corporate Average Fuel Economy (CAFE) are regulations in the United States,first enacted by the U.S. Congress in 1975 in the wake of the Arab Oil Embargo.
Its purpose is to improve average fuel
economy of cars and light trucks.

12. Renewable energy
Description of process
Benefits
Disadvantages to the environment
Hydroelectricity
Solar Power
biofuels
Hydrogen fuel cells
Wind turbines

13. Resources to complete table on slide 10.

14. Build a Wind Turbine

15. Calorimetry Determine the specific heat of a metal
When a heated piece of metal is dropped into water at room temperature, the heat from the metal will transfer to the water and raise the temperature of the water. Calorimetry is a way to determine the heat lost and gained by a system using the general equation q = mc∆T Where q is the heat lost/gained m = mass c = specific heat constant ∆T = final temperature – initial temperature

16. Calculating specific heat of the metal
q water = M water c water ∆Twater
Qmetal = mmetal cmetal ∆Tmetal