Green Computing refers to environmentally sustainable computing practices that minimize environmental impact. Computing harms the environment through high energy use in data centers and devices, as well as hazardous materials in electronics. Approaches to green computing include virtualization, power management, efficient storage and displays, recycling, and reducing travel. Simple individual tasks include using energy efficient devices, enabling power management settings, and recycling electronics. Companies have implemented green computing through products like low-power thin clients and initiatives to offset carbon emissions and recycle equipment.

1. Green ComputingPresented By:SnehasisPanigrahiGuided By:Prof. Sandeep Kumar Panda1

2. ContentsIntroduction

3. What is Green Computing

4. Why Go For Green Computing

5. How Computing Harm Environment

6. Origin

7. Road to Green Computing

8. Approaches to Green Computing

9. Simple Tasks for Go Green

10. Industrial Implementation

11. Steps by Some Companies

12. Conclusion2

13. 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.3

14. Why GoFor Green ComputingToday, 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.4

15. How Computing Harm EnvironmentIncrease in power, cooling and space for data center.2007-$4.5 billion of electricity2011-$7.4 billion of electricity(25 power plants)2011-Double CO2 output ( 62 million metric tons)5

16. How Computing Harm EnvironmentBy electronic appliances.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)6

17. How Computing Harm EnvironmentAccording 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.7

18. How Computing Harm EnvironmentHazardous materials inside computers.These containCadmium(damage your kidneys)Mercury(neurological damage)Lead(disrupt brain neurotransmitters).8

19. OriginIn 1992, the U.S. Environmental Protection Agency launched Energy Star, a voluntary labelling program which is designed to promote and recognize energy-efficiency in monitors, climate control equipment, and other technologies.Saved $14 billion in energy costs in 2006 alone.Widespread adoption of sleep modeEPEAT, is focused on promoting energy efficient products.9

20. Road to Green ComputingGreen Use Green Disposal Green DesignGreen Manufacturing10

21. Approaches to Green ComputingVirtualization:It includes Server virtualization, Consolidation, Storage consolidation & Desktop virtualization.Our typical computer used up to a 250-watt power supply; our thin client uses a 4.8-watt power supply.11

22. Approaches to Green ComputingPower management:Prolong battery life.Reduce cooling requirements.Reduce noise.Reduce operating costs for energy and cooling.Lower power consumption.The ACPI, an open industry standardUnder volting programs12

23. Approaches to Green ComputingStorage: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.13

24. Approaches to Green ComputingDisplay:LCD displays: use a CCF bulbLED displays: use an array of LEDsLCD 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.14

25. Approaches to Green ComputingIT 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.com15

26. Approaches to Green ComputingProduct Longevity:Gartner maintains that the PC manufacturing process accounts for 70 % of the natural resources used in the life cycle of a PC. Another report from Gartner recommends to "Looking for product longevity, including upgradability and modularity."16

27. Approaches to Green ComputingRemote 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.17

28. Approaches to Green ComputingOperating 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.18

29. Approaches to Green ComputingAlgorithmic 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.19

30. Simple Tasks for Go GreenBuy 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.20