# Energy Use - Presentation

```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
Solar

Efficiency



www.energystar.gov
Home energy use (national averages)
Space
Heating
46%
Appliances
and Lighting
24%
Electric A/C
8%
Refrigeration
5%
Water
Heating 17%
Home energy use (upper midwest)
Appliances
and Lighting
21%
Space
Heating
54%
Electric A/C 5%
Refrigeration
5%
Water
Heating,
15%
Heat losses
• Attic
• Basements
• Walls
• Windows and doors
U.S. Department of Energy
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
Item
Power Number of Hours Energy/Day= Kilowatt-hour per Cost per day
needs appliances on per watt-hour = day
(watts)
day
watt-hour x 0.001=
AxBxC=
E x \$.10/kwh =
D x 0.001 =
A
B
C
D
E
F
Determining cost
Incandescent
light
75w
CFL lights
15w
1
10
Cost per
year
F X 365 =
G
75x1x10=750 750x0.001=0.75kwh 0.75 x \$.10=\$.075 \$27.38/year
Energy efficiency

Fix the leaky
faucet
```