The document discusses green computing, which refers to environmentally sustainable practices in the design, use, and disposal of computer technologies. It outlines the harmful environmental impacts of traditional computing, such as high energy consumption and electronic waste, while presenting approaches for adopting greener methods, including virtualization, power management, and recycling. The conclusion emphasizes the importance of efficient resource use and potential business opportunities related to e-waste management.

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2. Contents
• Introduction
• What is Green Computing
• Why Go For Green Computing
• How Computing Harm Environment
• Road to Green Computing
• Approaches to Green Computing
• Simple Tasks to Go Green
• Industrial Implementation
• Conclusion
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3. What is Green Computing?
 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.”
 Green computing is the environmentally responsible and eco-friendly use
of computers and their resources.
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4. Why Go For Green Computing
 Today, the main problem of the world is Global warming.
 The atmosphere is becoming hot & is causing many problems to
living organisms
 Tons of Electronic Waste
 Limited Resources
 Energy Cost
 Computers also play a major role in polluting the world.
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5. How Computing Harm Environment
 Increase in power, cooling and space for data
centre.
 2007-$4.5 billion of electricity
 2011-$7.4 billion of electricity( i.e. 25 power
plants) it will double the CO2 output ( 62 million
metric tons) by electronic appliances.
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6. How Computing Harm Environment
 Desktop requires 85 watts just to idle(Monitor off)
 Left on 24 hrs/day-1,500 pounds of CO2 per year.
 A tree absorbs between 3 and 15 pounds of CO2 each year.(up
to 500 trees)
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7. How Computing Harm Environment
 According to reports from the German Federal
Environment Office, devices consume around 17
billion (kWh) in a year in standby mode.
 The CO2 dissipated from ‘sleeping’ devices = 1/7th
the CO2 emitted by an automobile.
 Manufacturers do not provide a proper shut-off
button in devices.
 Windows Vista’s default shut down mode is a deep
sleep mode that requires power.
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8.  Hazardous materials inside computers.
 These contain
 Cadmium (damage your kidneys)
 Mercury (neurological damage)
 Lead (disrupt brain neurotransmitters).
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How Computing Harm Environment

9. Road to Green Computing
 Green Use
 Green Disposal
 Green Design
 Green Manufacturing
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10. Green Manufacturing
 Bamboo : is becoming increasingly popular for making casings for
computers and peripherals.
 Recyclable plastics : computers are constructed from non-recyclable
plastics i.e. recyclable polycarbonate resin.
 Eco-friendly flame retardant : there are flame retardant silicone
compounds available that are flame retardant and completely non-toxic.
 Inventory management : reducing the quantity of both hazardous
materials used in the process and the amount of excess raw materials.
 Volume reduction : removes hazardous portion of waste from non
hazardous portion.
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11. Green Products
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12. Approaches to Green Computing
 Virtualization
 Power management
 Storage
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13. Approaches to Green Computing
Virtualization:
 It includes Server virtualization, Desktop
virtualization & Storage consolidation.
 E.g.: Our typical computer used up to a 250
watt power supply; but “thin client” uses a 4.8
watt power supply.
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Thin Client

14. Approaches to Green Computing
Power management:
 Prolong battery life.
 Reduce cooling requirements.
 Reduce operating costs for energy and cooling.
 Lower power consumption.
 Following the ACPI (Advanced Configuration and Power Interface),
an open industry standard.
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15. Storage:
 Among 3.5" desktop hard drive, 2.5" laptop hard drive
and a solid state hard drive (SSD); (SSD) consumes less
power than other disks.
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Approaches to Green Computing

16. 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.
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Approaches to Green Computing

17. Approaches to Green Computing
Product Longevity:
 Gartner, Inc. research result says that the PC
manufacturing process accounts for 70 % of the natural
resources used in the life cycle of a PC.
 Another report from Gartner, Inc. recommends us to go
for upgradability and modularity instead of buying new
PCs or subsystems.
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18. Operating System Support:
 Windows 7 includes refinements for more efficient user
of operating system timers, processor power
management, and display panel brightness.
 Linux Os utilizing less resources than other Os, and also
have a better power management facility.
Terminal servers:
 Terminals can be combined with thin clients, which use
up to 1/8 the amount of energy of a normal workstation.
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Approaches to Green Computing

19. Algorithmic efficiency:
 The Efficiency of algorithms is used to describe
properties of an algorithm relating to how much
resources it consumes.
 Algorithms are the base of any computing system or
electronic device, each and every computer chip has a
certain algorithm that allows it to complete its function.
 Even though these chips are small, they use a lot of
power.
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Approaches to Green Computing

20. Simple Tasks to Go Green
 Buy and use a low power desktop or a laptop computer (40-90
watts) rather a higher power desktop (e.g. 300 watts).
 Thin clients can use only 4 to 8 watts of power at the desktop as
the processing is done by a server.
 Buy hardware from manufacturers that have a hardware
recycling scheme, and recycle your old computer equipment
rather than sending it to landfill.
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21. Simple Tasks to Go Green
 Turn your computer and monitor off when you are not
using it.
 Enable hibernation using the power management
settings. Standby does not save as much power.
 Replace your CRT screen with an LCD screen.
 Save Your Paper! Use e-documents more frequently.
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22. Industrial Implementation
 Blackle (Uses: 59 watt): Search Engine powered by Google. Black Google Would Save
750 Megawatt-hours a Year.
 Fit-PC (compact, quiet and green): is a range of state-of-the-art miniature fan less PCs
that are extremely small, very low power and have more features than any other PC in
their category.
 Zonbu Computer: Zonbu's hybrid OS combines a robust, yet easy-to-use, linux-based
desktop environment with a complementary suite of cloud-based services including:
 remote access from any browser
 data synchronization and automatic backups
 online storage that grows with you
 the ability to edit and share documents and files on the fly.
 Consumes one third of the power of a typical light bulb.
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Blackle Search Engine
Fit PC
Zonbu Computer

24. Special Fact about Blackle
 Take at look at Google, who gets about 200 million queries a day.
 Let's assume each query is displayed for about 10 seconds; that
means Google is running for about 550,000 hours every day on
some desktop.
 Assuming that users run Blackle in full screen mode, the shift to a
black background [on a CRT monitor!] will save a total of 15 (74-
59) watts.
 That turns into a global savings of 8.3 Megawatt-hours per day, or
about 3000 Megawatt-hours a year.
 Now take into account that about 25 percent of the monitors in the
world are CRTs, and at 10 cents a kilowatt-hour, that's $75,000, a
goodly amount of energy and dollars for changing a few color
codes.
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VS

25. Conclusion
 The beauty of pursuing a green IT/ Computing strategy
is its multifaceted benefits.
 Green computing is not about going out and designing
biodegradable packaging for products.
 Now the time has come to think about the efficiently use
computers and the resources which are non renewable.
 It opens a new window for the new entrepreneur for
harvesting with E-Waste materials and scrap computers.
 The greenest computer will not miraculously fall from
the sky one day, it’ll be the product of year of
improvements.
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