GO GREEN PROJECT: ENERGY USE

Carl Pedersen, NDSU Energy Educator

ENERGY

“the ability to do work”

Industrial revolution

Coal – tons of energy

Transportation revolution Oil – moveable fuel

http://www.eia.doe.gov/emeu/aer/eh/frame.html

Images property of Free Range Studios

The U.S. gets 94 percent of its energy from nonrenewable sources and 6 percent from renewable energy sources.

http://www.eia.doe.gov/emeu/aer/eh/frame.html

New ideas

Biofuels Gasification Wind Solar Efficiency

www.energystar.gov

New ideas

Biofuels Gasification Wind SolarEfficiency

www.energystar.gov

Home energy use (national averages)

Appliances and Lighting 24%

Electric A/C 8%

Re-frigera-tion 5%

Water Heating 17%

Space Heat-ing 46%

Appliances and Light-ing 21%

Electric A/C 5%

Refrigeration 5%

Water Heating,

15%

Space Heating

54%

Home energy use (upper midwest)

30%

10%

• Attic• Basements•Walls•Windows and doors

U.S. Department of Energy

Heat losses

U.S. Department of Energy

Efficiency

Electronics example Plasma TV 75 watts

standby $65 per year in

standby losses

Video games

Nintendo Wii Sony

Playstation 3

Efficiency

Lighting CFL 75% less energy Less cooling in

summer $50 per bulb

Determining energy use

Determining costItem Power

needs(watts)

A

Number of appliances

B

Hours on per day

C

Energy/Day=watt-hour =

A x B x C =

D

Kilowatt-hour per daywatt-hour x 0.001=

D x 0.001 =E

Cost per day

E x $.10/kwh =

F

Cost per year

F X 365 =

G

Incandescent light 75w 1 10 75x1x10=750 750x0.001=0.75kwh 0.75 x $.10=$.075 $27.38/year

CFL lights 15w

Energy efficiency

Fix the leaky faucet