Transcript Colorado Energy Source Webquest

Natural Gas
Electricity
• Behavior changes
Reduce
energy
demand
• Air sealing
• Insulation
• Landscaping and windows
• Heating and cooling equipment
Use energy
efficiently
• Transport
• Lighting and appliances
• Solar
Use clean
sources
• Geothermal
• Wind
Solar heat
Air
Leakage
Internal
Heat
Transmission
Heat Removed by Cooling System
Ceiling
Transmission
Wall,
Fenestration,
Foundation
Transmission
Heat Supplied by Heating System
Source: Residential Energy, 5th Edition
Air
Leakage
Internal and Solar
Heat
BTUs per Hour per Square
Square Feet Cooled per Ton
Foot
1400
1200
60
50
40
30
20
10
0
1000
800
600
400
200
Source: Residential Energy, 5th Edition
Homes with
ventilators
with heat-recovery
and airtight homes
Very well insulated
leakage
homes with low air
Well insulated
climate homes
Average temperate
Average cold
climate homes
insulation problems
leakage or
with major air
Cold climate homes
0
Average homes
Poorly insulated,
effective air
leaky, sun-blasted
barriers, high R-
somes with poorly
values, good sun-
installed A/C
blocking, well
installed A/C
Source: www.ornl.gov
Space
Recommended R-Value
Attic
49
Wall
18
Floor
25
Crawlspace
19
Basement
11
Source: Colorado Governor’s Energy Office