Green computing refers to environmentally sustainable practices in the design, use, and disposal of computing technology. The goals include reducing hazardous materials, maximizing energy efficiency, and promoting recyclability, all while addressing issues like global warming and electronic waste. Implementing strategies such as energy-efficient hardware, algorithms, and proper disposal can lead to significant cost savings and environmental protection.

1. GREEN COMPUTING
References
[1] DIVYA S, "GREEN COMPUTING," "technogreen" 2013.
Green computing or green IT, refers
to environmentally sustainable
computing or IT. In the article
Harnessing Green IT: Principles and
Practices, San Murugesan defines
the field of green computing as "the
study and practice of designing,
manufacturing, using, and disposing
of computers, servers, and
associated subsystems—such as
monitors, printers, storage devices,
and networking and communications
systems — efficiently and
effectively with minimal or no
impact on the environment.
The goals of green computing are
similar to green chemistry; reduce
the use of hazardous materials,
maximize energy efficiency during
the product's lifetime, and promote
the recyclability or biodegradability
of defunct products and factory
waste. Research continues into key
areas such as making the use of
computers as energy-efficient as
possible, and designing algorithms
and systems for efficiency-related
computer technologies.
The term "technology" refers to
the application of knowledge for
practical purposes.
The field of "green technology"
encompasses a continuously
evolving group of methods and
materials, from techniques for
generating energy to non-toxic
cleaning products.
The present expectation is that this
field will bring innovation and
changes in daily life of similar
magnitude to the "information
technology" explosion over the last
two decades. In these early stages, it
is impossible to predict what "green
technology" may eventually
encompass.
The goals that inform developments
in this rapidly growing field include:
Sustainability - meeting the needs of

2. society in ways that can continue
indefinitely into the future without
damaging or depleting natural
resources. In short, meeting present
needs without compromising the
ability of future generations to meet
their own needs.
"Cradle to cradle" design - ending
the "cradle to grave" cycle of
manufactured products, by
creating products that can be fully
reclaimed or re-used.
WHAT
IS
COMPUTING?
GREEN
• Green computing or green
IT, refers to environmentally
sustainable computing or IT.
• It is "the study and practice of
Designing,
Manufacturing,
Using, and Disposing of
computers,
servers,
and
associated
subsystems
efficiently and effectively
with minimal or no impact on
the environment.
WHY
GO
FOR
COMPUTING?
GREEN
• Today, the main problem of
the world is Global warming.
• The atmosphere is becoming
hot & is causing many
problems to living organisms.
• Computers also play a major
role in polluting the world.
How
Computing
Environment
Harm
• Increase in power, cooling
and space for data centre.
• 2007-$4.5 billion of electricity
• 2011-$7.4
billion
of
electricity(25 power plants)
• 2011-Double CO2 output ( 62
million metric tons)
ORGIN:
• In
1992,
the
U.S.
Environmental
Protection
Agency launched Energy Star,
a voluntary labelling program
which is designed to promote
and
recognize
energyefficiency in monitors, climate
control equipment, and other
technologies.
– Saved $14 billion in
energy costs in 2006
alone.
– Widespread adoption of
sleep mode

3. • EPEAT is focused on
promoting energy efficient
products.
ROAD
TO
COMPUTING:
GREEN
• Green Use
• Green Disposal
• Green Design
• Green Manufacturing
APPROACHES TO GREEN
COMPUTING:
DISPLAY:
• LCD displays: use a CCF bulb
• LED displays: use an array of
LEDs
• LCD monitors uses 3 times
less when active, and 10 times
less energy when in sleep
mode.
• LCDs are up to 66% more
energy efficient.
• LCDs are also smaller in size
and weight.
• 21" CRT typically uses more
than 120W.
IT EQUIPMENT RECYCLING:
• If you can extend the working
life of your IT products, you
reduce the environmental
consequences of mining,
manufacture, packaging,
shipping and disposal.
• Many organizations, including
some manufacturers
themselves, are willing to take
equipment back and recycle
the components into new
products.
• electronictakebackcampain.co
m
Remote Conferencing &
Telecommuting Strategies:
Given recent jumps in fuel costs and
greater awareness of harm caused by
greenhouse gas emissions, many
companies wish to reduce travel to
cut costs and decrease negative
impact on the environment.
The initiatives in this study consist
of the following:
• Remote Conferencing &
Collaboration.
• Video-conferencing and
teleconferencing.

4. INDUSTRIAL
IMPLEMENTATION:
• Their “Plant a tree for me”
project can offset a customer’s
carbon emissions for only
three dollars.
• Blackle(74~59 wt)(saves
750mw)
• Fit-PC(compact, quiet and
green)
CAUSES FOR GREEN IT:
• Use lot of Electricity
• Zonbu Computer
• Creates lots of toxic waste
• Sunray thin client
• Impact of Electricity to the
Environment
• Impact of Toxic waste to the
Environment
ENERGY USAGE PROFILE
(EUP):
• CPU uses 120 Watts
• CRT uses 150 Watts
– 8 hours of usage, 5 days
a week = 562 kWatts
STEPS BY DELL:
• Their free world-wide product
recycling program allows user
to properly dispose their
product safely.
• if the computer is
left on all the
time without
proper power
saver modes, this
can lead to 1,600
KWatts
• Energy use
comes from

5. – electrical current to run
the CPU, motherboard,
memory
consumer electronics device,
including cables. When
disposed off improperly, these
materials contain elements
that work their way into our
water table. The elements are
also rendered non-reusable as
they are blended in with other
waste and lost.
– running the fan and
spinning the disk(s)
– monitor (CRTs
consume more power
than any other
computer component)
– printers
TOXICITY:
•
Metals like Lead, Mercury,
Cadmium, Hexavalent
Chromium, Plastics, tin,
copper, carbon and aluminum
• Iron, Silicon, Lithium, Zinc,
Gold, Sulphur
E-WASTE:
•
Electronic waste (eWaste)
is one of the most controllable
pieces of the waste stream.
Recycling eWaste is easy;
recycling eWaste normally
and ethically takes a bit more
work.
• What is electronic waste? Any
cell phone, computer,
monitor, printer, CD, battery,
television or other business or
APPROACHES TO GREEN
COMPUTING:
•
Algorithmic Efficiency
• Power Management
• Video Card
• Telecommuting
REDUCING ENERGY
CONSUMPTION:
•
Turn off the computer
when not in use, even if just
for an hour
• Turn off the monitor when not
in use (as opposed to
running a screen saver)
• Use power saver mode

6. – in power saver mode,
the top item is not
necessary, but screen
savers use as much
electricity as any
normal processing, and
the screen saver is not
necessary on a flat
panel display
• Use motherboard video output
- typically low 3D
performance and low power.
• Select a CPU based on low
idle power, average wastage
or performance per watt.
REFURBISH:
•
• Use hardware/software with
the Energy Star label
– Energy Star is a “seal
of approval” by the
Energy Star
organization of the
government (the EPA)
• Don’t print unless necessary
and you are ready
• Use LCDs instead of CRTs as
they are more power efficient.
VIDEO CARD:
A fast CPU may be the largest
power consumer in a computer.
Energy efficient display options
include:
• No video card - use a shared
terminal, shared thin client,
or desktop sharing software if
display required.
rather than discarding
your computer when the next
generation is released, just get
a new CPU and memory chips
– upgrade rather than replace
while you will still be
discarded some components,
you will retain most of the
computer system (e.g.,
monitor, the system unit
housing, cables)
RECYCLE:
•
Computer monitors (CRTs)
contain an average of 4 lbs. of
lead, a lot of reusable glass,
chromium and mercury. All of
these elements can be
extracted and reused. For
example, a recycler can takes
the glass from old monitors,
and sends them to
manufacturing for use on flat
screen monitors and TVs.
• CDs/DVDs contain gold,
glass, plastic, nickel and other
elements that are completely
recoverable and reusable.

7. • Batteries – everything from
the batteries that power your
phone, laptop, and mouse can
be recycled, whether singleuse or rechargeable.
• Time-Based Power over
Ethernet (Poe)
• Wi-Fi Scheduler
• Share Port
• LCD Standby
GREEN WEB SURFING:
• Power Saving by Hard Drives
Hibernation
• Smart FAN
ADVANTAGES:
•
BEING
GREEN WITH YAHOO
GREENER
FIREFOX SURFING
Both green computing and
hardware disposal focus on
being green to help have less
of an impact on our
environment.
• Recycling like NewTech
disassembles and reuses parts
from old computers to build
new, better ones, without just
dumping them in a landfill.
CONCLUSION:
GREEN TECHNOLOGIES:
•
Power Saving by Link Status
• Power Saving by Cable
Length
• Green computing can lead to a
lot of energy savings,
reduction in emission of co2
& CFC’s which leads to
environment protection.
• It also leads to serious cost
savings overtime.

8. NAME: DIVYA S
EMAIL ID:
divcindrella03@gmail.com
COLLEGE NAME: SRI
RAMANUJAR ENGINEERING
COLLEGE
DEPARTMENT: IT
YEAR: 3rd