GREEN COMPUTING

What is Green Computing?

The study and practice of designing, manufacturing, using and disposing of computers and associated subsystems such as monitors, printers, storage devices, networking and communication systems efficiently and effectively with no impact on the environment.

Why Green Computing

• Why– Computer Energy is Often Wasteful

• Leaving the computer on when not in use (CPU and fan consume power, screen savers consume power)• Insufficient Power and Cooling Capacities• Data centers have insufficient cooling capacities.-Pollution • Manufacturing techniques• Packaging• Disposal of computers and components-Toxicity• There are toxic chemicals used in the manufacturing of computers and components which can enter the food chain and water!

Consequences of Non-Green ComputingRelease of harmful gases from electronics

More utilization of power and money

Increase of E-waste and improper disposal

Manufacturing of PCs-Hazards.

Lead: Used in soldering of printed circuit boards.

Lead can cause damage to the central and

peripheral nervous system , blood systems

and kidneys.

Mercury: Used in batteries, switches . Mercury spreads

out in water transforming into methylated

mercury that can cause chronic brain damage.

 

Cadmium: Used in resistors for chips and in

semiconductors . Cadmium is classified as toxic,

these compounds accumulate in the human body,

particularly the kidneys.

Green Disposal

Reuse: donate your computer components to people who may not have or have lesser quality computers.

Refurbish: rather than discarding your computer upgrade it. Change its some of the parts in order to make it new. 

Recycle: One of the major challenges is recycling the printed circuit boards from the electronic wastes. The circuit boards contain such precious metals as gold, silver, platinum, etc. and such base metals as copper, iron, aluminum.

Powering in an E-mail System

Energy is consumed in three places when a user check their email• The Client: The PC, laptop, phone or other device directly accessing

email is called the client. Its using electricity as it fetches and displays email.

• The Network: Wireless routers, network switches and all the intervening networking equipment between the client and the email server use electricity.

• The Server: The computer or group of computers receiving, sending and storing email is called email server. This machine and group of machines is constantly ON and consuming electricity.

Research and DevelopmentIBM in 1990 saved around 4.6 billion kWh of electricity and prevented almost 3 million metric tones of CO2 emissions.Since 2007, Google has been a carbon neutral company, utilizing energy efficient improvements, green power and carbon offsets to bring our footprint down to zero. Users of Gmail also enjoy this benefit of zero carbon emission email.Choosing Gmail over a locally hosted server can mean an annual per-user power savings of up to 170 kWh and a carbon footprint reduction of up to 100 kg of CO2

How to go Green

Turn off the computer when not in use, even if just

for an hour

Turn off the monitor when not in use

Use power saver mode

Use hardware/software with the Energy Star label

Don’t print unless necessary and you are ready

Use LCDs instead of CRTs as they are more power efficient

Consider a smaller monitor-a 14-inch display uses 40% less energy than a 17-inch one.

Enable Stand By/Sleep mode.

Recycling

Energy Star

One of the first manifestations of the green computing movement was the launch of energy star program back in 1992.

Energy Star served as a kind of voluntary label awarded to computing products that succeeded in minimizing use of energy while maximizing efficiency.

Energy Star applied to products like computer monitors, television sets and temperature control devices like refrigerators, air conditioners, and similar items.

Green Web Surfing

Greener Google Browsing:Blackle.com

Being Green with Yahoo!

Greener FireFox Surfing

Other Green Surfing Efforts

How to save energy while working on the internet ?

Blackle is a website powered by Google Custom Search and created by Heap Media, which aims to save energy by displaying a black background and using grayish-white font color for search results.

Blackle saves energy because the screen is predominantly black

Blackle claims having saved 3.12 MWh (megawatt hours) of electrical energy up to now (May 28th 2012)

How to save energy while working on the computer?

Sleep mode:

Sleep or standby mode conserves energy by cutting off power to your display, hard drives and peripherals.

 After a pre-set period of inactivity, your computer switches to a low power state.

 

Hibernate mode : 

Saves energy and protects your work by copying system data to a reserved area on your hard drive and then completely turning off your computer.

  Reduces wear and tear on your components.

Power managementPower Management• CRT Monitor (17”) uses 80 watts.• LCD Monitor (17”) uses 35 watts.• LED Monitor (17”) uses 25 watts. LEDs – Rare and ExpensiveLCDs preferred for general users.

Energy Star Rated Computer – 80% energy Efficient.Without Energy Star Rated Computer – 70% Efficient.

Global warmingGlobal Warming ► Ice cap at the North Pole continues

to shrink!

1979 2009

Three areas of focus

Three areas of focus•Purchase/Disposal Responsible computer purchase and disposal considerations.

• Energy use Energy use and efficient ways to computing. •Reducing waste Using computers to reduce the use of natural resources.

Algorithm EfficiencyThe efficiency of algorithms has an impact on the amount of computer resources required for any given computing function.

Carbon Dioxide Released per search:Google Search ≈ 0.20gm Microsoft Live Search ≈ 0.32gm Yahoo Search ≈ 0.26gmAOL Search ≈ 0.37gm.

Material RecyclingDisposal of the computing devices constitute 20-50 million tons per year (about 5% of the total waste of the planet)

•this waste is called e-waste

Where are we going to pull all of it?

e-waste handling

Reuse

Refurbish

General suggestionGeneral Suggestions• Change your subscriptions to online – not

paper .• Optimize computer performance.• Decrease screen brightness.• Change from XP to Vista.• Consider LCDs over CRTs.• Consider laptops over desktops.• Have a energy efficient approach.

How Can We Help…??

o Put Laptop On Sleepo Use Eco Friendly Search Engines.

o From Paper Go Online Subscription.o Optimize Performance Of Laptopo Do not Use A ScreenSaver

Benefits of Green Computing

Reduces the amount of pollutants in the surroundings.It saves the power consumption and reduces the amount of heat produced from the electronics.It reduces the burden on paper industry.Encourages the use of Renewable Resources.Promotes effective utilization of natural resources.

Advantages

• Reduce Energy Usage• Conserving Resources• Reduces The Risk• Saving The Energy• Saving The Planet

Disadvantages

• High Start Up Cost• Not Readily Available• Still in experimental stages

Remember Save energy and our environment

Remember…Charity may begin at home, but green computing begins

at the desktop.

Thank You

QUERIES??