power management - VCU Sustainability

LIGHTING
COMPARISON
POWER
MANAGEMENT
LED light bulbs are recommended for new purchases.
For Apple computers
1. Dock > System PreferencesHERE’S WHY:
2. Customize settings in Energy Saver
Cost per Year $
Suggested Guidlines:
Turn off Monitor: 5 min
System Standby: 20 min
Energy Use (Kwh/year)
CFL
INCANDESCENT
* You can also manage your computer’s power manually. Just go to the
apple menu and put your computer to sleep.
LED
For Windows XP laptop and desktop
1. Start > Control Panel > Power Options
Life Span (hours)
2. Customize settings in the Power Schemes tab
Suggested Guidlines:
CFL 5 min
LED
GRAPH
Turn
offDATA
Monitor:
System
20 min
LIFE SPAN Standby:
8,000
50,000
(HOURS)
System
Hibernate: 45 min
INCANDESCENT
Lumens/Watts
TERMS TO KNOW
CFL Compact Flourescent Lamp
LED Light-emitting didode
26
11
110
*ENERGY
YouUSE
can also manage
your computer’s
power
manually.
Just goofto
Start
> per second
Lumens
The amount
light
emitted
(Kwh/YEAR)
Shut Down > Standby or Hibernate
Watts Unit of poser, equivalent to 1 joule/sec
90
11
45
Kwh Kilowatt hour unit of energy
LUMENS/
1,200
WATTS
ANNUAL TIPS
ADDITIONAL
OPERATING COST
-
$2.55
$1
$10.95
You can also save energy by using a laptop computer instead of a desktop and monitor
Screen “savers” actually use energy: turn yours off by going to:
Apple: System Preferences > Screen Saver or Windows: Start > Control Panel > Screen Saver
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