Session 10: Energy Efficiency in

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Nov 24, 2013 (3 years and 9 months ago)

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Session 10: Energy Efficiency in
Information Technology
Equipment

Agenda


What is Green IT?


Defining End User Devices


Power Consumption


Power Management


Mobile Computing


Printing


Where to next?

What is Green IT?

“Green IT is the conscious
implementation of technologies,
techniques and policies designed to
reduce the carbon footprint of the IT
function within the organisation …



… and the use of IT to reduce the carbon
footprint of the whole organisation”


End User Efficiencies


Desktop computing


Mobile computing


Printing

Power Consumption


PCs, Displays, Printers and other
components


How is power measured?


How much does it cost?


What is the annual cost?



Power Consumption Example


Assumptions:


Energy is charged at 20c per kWh


1 PC uses 100W


What is the cost for 100 PCs for one 8
hour day?


What is the cost per year?

Power Consumption Example
Solution


Energy per PC per hour:

100W x 1hr = 100Wh

= 0.1kWh


Cost per PC per hour: 0.1kWh x 20c = 2c


Cost per PC per 8 hour day: 2c x 8hr = 16c


Cost for 100 PC per day: 100 x 16c = $16.00


Cost for 100 PC per year: $16 x 365 = $5840

Component Power

System Unit Type
(without monitor)

Power
Consumption
(Watts)

Conventional Desktop
PC


no power
management

110W

Conventional Desktop
PC


power
management

90W

“Green PC”

80W

Laptop PC

60W

Notebook PC

40W

Thin Client

15W

Monitor type

Power
Consumption
(Watts)

Conventional CRT
monitor


19 inch

140W

Conventional CRT
monitor
-

17 inch

80W

LCD Monitor


19 inch

50W

LCD Monitor


17 inch

30W

OLED Monitor

10W

Figures at as 2008

Activity 1


Measure power consumption of
desktop appliances


Power Management


All modern operating systems
have power management facilities
built in


Decreases power consumption by
more than 50%


Reduces the need for cooling


Should you Turn Them Off?


Turning PCs off will reduce the power
consumption but will reduce
productivity


Use power management during work
hours and turn off at other times.


Use Server Policies to force shutdown
after hours

ComputersOff.org


Did you know that putting your PC to
“sleep” or turning it off when you’re not
using it, can save you up to $80 on
your power bill and reduce your
computer’s carbon emissions by up to
100kg over 12 months. That’s the same
amount of C0
2
you emit by flying from
Sydney to Canberra!

(
www.computersoff.org
)

Mobile Computing


Laptops, Netbooks and PDAs


Use less power than desktops but can still
have savings


Use power adapter when possible


Turn off features when not in use


Use wired network if possible


Enables teleworking, reduces travel


Shorter life span means more disposal

Printers and Print Management


Does duplex printing help?


Don’t print as much and use print
settings to reduce output


Use fewer printers with better
power management.


Use billing to change behaviour

Activity 2


Make calculations using
EnergyStar website


Make suggestions for reducing
power consumption


this must
be submitted for assessment.


Other ways of reducing the

Carbon Footprint


Procurement


Reuse, refurbish, redeploy and
recycle


Ethical Disposal


Video


Toxic Trade
http://www.pbs.org/frontlineworld/stories/ghana804/video/video_index.html


Other energy efficiency/ IT
topics


Datacentre power consumption


Virtualisation


Cooling


Cloud Computing


IT as an enabler for reducing enterprise
carbon footprint


Carbon Emissions Reporting


Teleworking

Useful websites


http://www.energystar.gov.au/products/co
mputers.html



http://michaelbluejay.com/electricity/comp
uters.html



http://www.computersoff.org/