green computing

GREEN COMPUTING

- NANDHA SHREE

ABSTRACT

Green computing also called green technology, it is the environmentally sustainable to use of computers- Green computing- Energy star program-Goals and Motto-Approaches towards green computing-application of green computing in routine life-green (web Surfing, Technologies, Pc’s)-green cycle –power managements-Development Techniques-difference between cloud and green computing-green cloud computing-Merits and Demerits -future of green computing-conclusion.

GO GREEN!!!

WHAT IS GREEN COMPUTING?

It is the study of efficient and eco-friendly computer resources.

In recent years,computer industry have come to realize that going green is their best interest

Environmental Protection Agency (EPA) launched the energy star program

ENERGY STAR PROGRAM Energy star is an international standard for energy

efficient consumer products originated in the U.S. in 1992.

GOALS OF GREEN COMPUTING

Reduce the use of hazardous materials.

Maximise energy efficiency during the product’s lifetime.

Promote the biodegradability of defunct products and factory waste.

APPROACHES TO GREEN COMPUTING

Algorithmic Efficiency Power Management Video Card Display Materials Recycling Telecommuting

APPLICATIONS

Algorithmic efficiency - Algorithm changes, such as switching from a slow (e.g. linear) search algorithm to a fast (e.g. hashed or indexed) search algorithm can reduce resource usage for a given task from substantial to close to zero.

Video card- A fast GPU may be the largest power consumer in a computer

Select a GPU based on low idle power, average wattage, or performance per watt.

Display- CRT monitors typically use more power than LCD monitors. They also contain significant amounts of lead.

 LCD monitors typically use a cold-cathode fluorescent bulb to provide light for the display. Some newer displays use an array of LED

Materials recycling- Recycling computing equipment can keep harmful materials such as lead, mercury, and hexavalent chromium out of landfills.

TELECOMMUTING- Work from home

GREEN WEB SURFING

Greener Google Browsing: Blackle.com

Being Green With Yahoo! Greener FireFox Surfing Other Green Surfing Efforts

GREEN TECHNOLOGIES

POWER SAVING LINK STATUS WI-FI SCHEDULER

GREEN PC’S

Fit-PC :is the size of a paperback and absolutely silent, yet fit enough to run Windows XP or Linux. fit-PC is designed to fit where a standard PC is too bulky, noisy and power hungry. a tiny PC that draws only 5w in a day,consumes less power than a traditional PC consumes in 1 hour. You can leave fit-PC to work 24/7

Zonbu Computer: The Zonbu is a new, very energy

efficient PC. The Zonbu consumes just one third of the power of a typical light bulb. The device runs the Linux operating system using a 1.2 gigahertz processor and 512 meg of RAM. You can get one for as little as US$99

GREEN CYCLE

Power Management

Power management for computer systems are desired for many reasons, particularly,

Prolong battery life for portable and embedded systems.

Reduce cooling requirements. Reduce noise. Reduce operating costs for energy and cooling.

GREEN CLOUD COMPUTING

DIFFERENCE BETWEEN GREEN AND CLOUD COMPUTING

GREEN COMPUTING CLOUD COMPUTINGGreen computing is the environmentally responsible and eco-friendly use of computers and their resources. In broader terms, it is also defined as the study of designing, manufacturing/engineering, using and disposing of computing devices in a way that reduces their environmental impact

cloud is a buzzword that refers to the potential environmental benefits that information technology (IT) services delivered over the Internet can offer society. The term combines the words green -- meaning environmentally friendly -- and cloud, the traditional symbol for the Internet and the shortened name for a type of service delivery model known as cloud computing.

GREEN COMPUTING DEVELOPMENT TECHNIQUES

Power-sucking displays can be replaced with green light displays made of OLEDs, or organic light-emitting diodes.

Use of toxic materials like lead can be replaced by silver

and copper.

Higher-quality power supplies can be over 80% efficient; higher energy efficiency uses less power directly, and requires less power.

Turn your computer and monitor off when you are not using it.

Specify low energy consumption level in Request for Tender documents.

MERITS AND DEMERITS ADVANTAGES

Reduced energy usage from green computing techniques translates lower carbon dioxide emissions, stemming from a reduction in the fossil fuel used in power plants

Saving energy and resources saves money

Reduce the risk existing in the laptops such as chemical known to cause cancer, nerve damage and immune reactions in humans

DISADVANTAGES

Green computing could actually be quite costly. 

Some computers that are green may be considerably underpowered. 

Rapid technology change 

FUTURE OF GREEN COMPUTING Opportunities lie in green technology like never before

in history and organizations are seeing it as a way to create new profit centers while trying to help the environmental cause.

Inefficient CPU's are a double hit because they both use too much power themselves and their waste heat increases air conditioning needs, especially in server farms.

The waste heat also causes reliability problems, as CPU's crash much more often at higher temperatures, generally as little as 47% efficient. Recent inventions of power supply are helping fix this by running at 80% efficiency or better.

CONCLUSION As 21st century belongs to computers,energy issues

will get a serious ring in the coming days.

If we think computers are nonpolluting and consume very little energy we need to think again.

It is estimated that out of $250 billion per year spent on powering computers worldwide only about 15% of that power is spent computing- the rest is wasted idling.

Thus, energy saved on computer hardware and computing will equate tonnes of carbon emissions saved per year.

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