Green Censorship

download Green Censorship

of 15

Transcript of Green Censorship

  • 8/2/2019 Green Censorship

    1/15

    Presented by,

    Vandana kumari2010mb72

    Anuradha

    2010mb73

  • 8/2/2019 Green Censorship

    2/15

    Outline

    Introduction

    Energy consumption

    Need of Green Computing

    Reducing energy consumption

    Chemical elements used

    Solution

    Reference

  • 8/2/2019 Green Censorship

    3/15

    Introduction

    Green computing is the environmentally responsible use of

    computers and related resources.

    The study and practice of designing manufacturing, using,

    and disposing of computers, servers, and associated

    subsystemssuch as monitors, printers, storage devices,

    and networking and communications systemsefficientlyand effectively with minimal effect on the environment."[

    http://en.wikipedia.org/wiki/Green_computinghttp://en.wikipedia.org/wiki/Green_computing
  • 8/2/2019 Green Censorship

    4/15

    Energy consumption

    A typical desktop PC may require approximately 100 watts of

    electrical power

    50-150 watts for a 15-17 inch monitor, proportionately more

    for larger monitors

    Conventional laser printers can be as much as 100 watts or

    more.

    Ink jet printers use as little as 12 watts while printing and 5

    watts while idling

  • 8/2/2019 Green Censorship

    5/15

    Need of Green Computing

    Computer energy is often wasteful

    Leaving the computer on when not in use (CPU and fanconsume power, screen savers consume power)

    Printing is often wasteful How many of you print out your emails or meeting

    agendas

    Printing out partial drafts

    For a paperless society, we tend to use more papertoday than before computer-prevalence.

  • 8/2/2019 Green Censorship

    6/15

    Pollution

    Manufacturing techniques

    Packaging

    Disposal of computers and components

    Toxicity

    There are toxic chemicals used in the manufacturing ofcomputers and components which can enter the foodchain and water

  • 8/2/2019 Green Censorship

    7/15

    Reducing Energy Consumption

    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

    Energy Star is a seal of approval by the Energy Starorganization of the government (the EPA)

    Dont print unless necessary and you are ready.

    Use LCDs instead of CRTs as they are more power efficient.

  • 8/2/2019 Green Censorship

    8/15

    Chemical Elements Used: Lead

    Used in soldering of printed circuit boards and other

    components. Also used in glass for CRTs.

    The problem:

    Lead can cause damage to the central and peripheralnervous systems, blood system, kidneys, endocrine systemand cause negative effects on child brain development.

    Lead accumulates in the environment and has toxic effects

    on plants, animals and microorganisms. Electronics contribute 40% of the total amount of lead found

    in landfills and can make its way from landfills into thewater supplies.

  • 8/2/2019 Green Censorship

    9/15

    Chemical Elements Used: Mercury

    Mercury is used in batteries, switches, housing, printed circuitboards.

    Mercury is found in medical equipment, data transmissionequipment, telecommunications equipment and cell phones aswell.

    It is estimated that 22% of the yearly use of mercury is inelectrical and electronic equipment.

    The problem

    Mercury spreads out in water transforming into methylated

    mercury which easily accumulates in living organisms. It enters the food chain through fish that swim in polluted

    waters.

    Methylated mercury can cause chronic brain damage.

  • 8/2/2019 Green Censorship

    10/15

    Other Chemical Elements

    Cadmium is used in resistors for chips, infrared detectors and insemiconductors (plus older CRTs).

    The problem:

    Cadmium is classified as toxic, these compounds accumulate in

    the human body, particularly the kidneys. Cadmium is absorbed through respiration and also food intake.

    Cadmium has a half life of 30 years so that cadmium can poisona human body slowly through the humans life.

    Hexavalent Chromium (Chromium VI) is used to treat steel plates(an anti-corrosive). This can lead to cancer and a number ofother medical problems.

  • 8/2/2019 Green Censorship

    11/15

    Plastics

    Plastics are found throughout the computer, largely from casingsbut also internally to hold components together.

    One specific form of plastics used is polyvinyl chloride (PVC)

    which is used in cabling and housings.

    The plastics in computers are often treated with flame retardantchemicals, particularly brominates flame retardant.

  • 8/2/2019 Green Censorship

    12/15

    Solutions

    Reuse: Donate your computer components to people who may nothave or have lesser quality computers like inner city schools,churches, libraries, third world countries.

    Refurbish: Rather than discarding your computer when the nextgeneration is released, just get a new CPU and memory chips upgrade rather than replace, while you will still be discarded somecomponents, you will retain most of the computer system (e.g.,monitor, the system unit housing, cable).

    Recycling: If companies can recycle the plastics and othercomponents, this can greatly reduce waste and toxins.

    However, the hazardous materials in e-waste can harm the recycleworkers if they are not properly protected.

  • 8/2/2019 Green Censorship

    13/15

    Developed countries now have facilities for recycling e-waste.

    However, in Europe, the plastics are discarded instead of

    recycled because the flame retardant chemicals are too toxic to

    work with.

    To resolve these problems, the computer manufacturers must start

    using recyclable chemicals

  • 8/2/2019 Green Censorship

    14/15

    References

    http://ecenter.colorado.edu/energy/projects/green_computing.html

    http://www.energymanagement.umich.edu/utilities/e

    nergy_management/computing/ http://www.facilities.ohiou.edu/greenpc

    http://www.environment.columbia.edu/docs-wycd/green_guide/Facts.html

    http://wiki.williams.edu/display/docs/Green+Computing

    .

  • 8/2/2019 Green Censorship

    15/15