Green ComputingBy-

SUPRIYA MONDAL(CSE-2) Roll:-14300111116SURIT DATTA(CSE-2) Roll:-14300111120

CONTENTS What is Green Computing Green Computing-Why? In a word Green Use, Green Disposal, Green Design, Green

Manufacturing Manufacturing of PC’s Green manufacturing Energy use of PC Energy star How to save energy while working on the internet ?? How to go Green Disposal of components Green Disposal Example of Green computing: Thin Client Conclusion

What is Green Computing

• environmentally responsible use of computers and related resources

• implementation of energy-efficient central processing units (CPUs),servers and peripherals

• reduced resource consumption and proper disposal of electronic waste (e-waste)

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)

– pollution • manufacturing techniques• packaging• disposal of computers and components

– toxicity• as we will see, there are toxic chemicals used in the

manufacturing of computers and components which can enter the food chain and water!

In a Word• More directly, it means using computers or devices in

ways that save the environment, save energy and save money.

4 aspects to be “Green”:• Green use: Minimizing the electricity consumption of

computers and other devices• Green disposal: Re-making or recycling unwanted

electronic equipments• Green design: Designing energy-efficient computers,

servers, printers and other digital devices• Green manufacturing: Minimizing waste during the

manufacturing of computers and other subsystems

• 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.

Manufacturing of PC’s

• Bamboo : is becoming increasingly popular for making casings for computers and peripherals.

• Recyclable plastics : computers are constructed from non-recyclable plastics ie 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.

Green manufacturing

Energy use of PC• CPU uses 120 Watts

  

• CRT uses 150 Watts 8 hours of usage, 5 days

a week = 562 KWatts

• Energy use comes from Electrical current to

run the CPU, motherboard, memory running ,the fan and spinning the disk, monitor.

• 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.

Energy star

• 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

• Set Blackle as your homepage.

How to save energy while working on the internet ??

How to go Green• Turn off the computer when not in use, even if just

for an hour• 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• Switching from a locally hosted email system to cloud based email

system

• Europe has outlawed using landfills for computer components• Disposal of these devices constituted 20-50 million tons per

year (about 5% of the total waste of the planet)• this waste is called e-waste• Toxic chemicals in electronics products can reach into the land

over time or are released into the atmosphere, impacting nearby communities and the environment.

• This releases heavy metals such as lead, cadmium and mercury into the air and ashes.

Disposal of components

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

• Reduce: 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.

Green Disposal

Example of Green computing: Thin Client

Thin Client:

• a regular computer

• do not have to have hard drives

• can run the software, with the help of a server

• connected to servers through network

• A Thin Client is a computer or a computer program which depends heavily on some other computer (its server) to fulfill its traditional computational roles.

CONCLUSIONWhile the performance and the breadth of

application is increasing, so awareness of the cost & scarcity of the energy required to power them, as well as the materials needed to make them is necessary.

Through more environmentally aware usage(such as more effective power management & shut-down during periods of inactivity) and by adopting current lower power technologies, computers can be made significantly more energy efficient.

Green Computing = Green Earth.

THANK YOU

“GO GREEN SAVE OUR EARTH”