Green computing


Published on

A presentation on Green Computing - Final Semester Project for Computer Science Engineering Students!

Published in: Education
  • Be the first to comment

No Downloads
Total views
On SlideShare
From Embeds
Number of Embeds
Embeds 0
No embeds

No notes for slide

Green computing

  1. 1. GREEN COMPUTINGSeminar Presented by- Dipankar Mazumdar
  2. 2. What is GREEN COMPUTING? Green Computing is the practice of using computer resources efficiently. Designing, manufacturing, disposing computers, servers with no impact on theenvironment. To reduce the use of hazardous materials, thus maximizing energy efficiencyduring product’s lifetime. Also known as Green IT.
  3. 3. Why GREEN COMPUTING? Computer Energy is often wasteful.Eg: Leaving the Computer ON when not in use. Printing is wasteful.Eg: Email / Meeting agenda’s print-outs is a waste. Pollution.Eg: Due to manufacturing, packaging, disposal techniques. Toxicity.Eg: Due to toxic chemicals involved in manufacturing.
  4. 4. Green Manufacturing- Bamboo: is becoming increasingly popular for making casings for computers &peripherals. Recyclable plastics: Computers are constructed from recyclable polycarbonateresin. Eco-friendly flame retardant: There are flame retardant silicone compoundsavailable that are flame retardant and completely non-toxic. Inventory Management: reducing the quantity of both hazardous materials usedin the process and the amount of excess raw materials. Volume reduction: removes hazardous portion of waste from non-hazardousportion.
  5. 5. Energy use of PC: CPU uses 120 watts. CRT uses 150 watts.-8 hours of usage, 5 days a week = 562 KWatts. Energy use basically comes from--Electrical current to run the CPU, Motherboard, Memory-Running the fan & spinning the disk.-Monitor.
  6. 6. Energy Star One of the first manifestations of the Green Computing movement was thelaunch of ‘Energy Star’ program back in 1992. Energy Star served as a voluntary label awarded to computing products thatsucceeded in minimizing use of energy while maximizing the efficiency. Energy Star applied to products like Monitors, television sets and temperaturecontrol devices like refrigerators, air-conditioners.
  7. 7. Pathways to Green Computing:Following are the pathways to Green Computing:Green Use.Green Disposal.Green Design.Green Manufacturing.
  8. 8. Approaches: Product longevity: the biggest contribution to green computing usually is to prolong theequipments lifetime. Recently, ‘Fujitsu’ released a Life Cycle Assessment (LCA) of adesktop that shows that manufacturing and end of life accounts for the majority of thelaptop ecological footprint. Software and deployment optimization:- The efficiency of algorithms has an impact on the amount of computer resourcesrequired for any given computing function.- 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 fromsubstantial to zero.
  9. 9. Approaches: contd.. Power management. Recycling.
  10. 10. Saving Energy while working inComputer:Sleep Mode:Sleep or Stand-by mode conserves energy by cutting off power to our display, harddrives and peripherals.After a preset period of inactivity, our computer switches to a low power state.Hibernate Mode:Saves energy and protects our work by copying system data to a reserved area on ourhard drive and then completely turning off computer.
  11. 11. Saving Energy while working in Internet: ‘Blackle’ is a website powered by Google custom search and created by ‘HeapMedia’ which aims to save energy by displaying a black background and usinggrayish-white font color for search results. ‘Blackle’ saves energy because the screen is predominantly black. Setting ‘Blackle’ as the default search engine will definitely take us to Greencomputing.
  12. 12. Green Disposal: Reuse: donate your computer components to people who don’t have or havelesser quality computers. Refurbish: rather than discarding your computer upgrade it. Change its partsto make it new. Recycle: One of the major challenges is recycling the printed circuit boardsfrom electronic wastes. The circuit board contains such precious metals as gold,silver, platinum etc.
  13. 13. Compute Green!Thank you!