Technology and environment
Ever since it was invented, computing technology has seen a spiralling growth curve, both in terms of efficiency and productivity. Head counts have been rapidly replaced with desktops and the required manpower implementation is significant on a downside. The human work force, driven by physical energy is left way behind and is not a viable option when power driven (electricity) computers performs the same task more efficiently.
At the same time, when IT technology has helped companies streamline business processes and improve efficiency, the amount of processing power and bandwidth IT systems use has also been increasing. So the amount of energy they consume and the volume of toxins they emit have also been on the rise. This has been alarming and the devastating effects are already glimpsed with the melting of Arctic and Antarctic. Sea levels has been rising, environmental detriments are visible. Everyone is now aware of the “Greenhouse effect” and “Global Warming” phenomenon.
Well, have you ever imagined that all these things stem from callous attitudes on an individual level. How much do we contribute to these effects? And more importantly, what can and should be done to counter it? It is in this effect that the term Green computing has been the centripetal guiding force of the contemporary businesses and individual practices.
What is green computing?
Green computing is a mindset. Contemporaneous businesses have networking processes that has a quadratic effect, the interaction grows in three dimensions geometrically rather than linearly and has disturbed the environmental symbiosis. So green computing is a mindset that asks how we can satisfy the growing demand for network computing without putting such pressure on the environment. Scourge for an alternative way to design a processor and a system such that we don’t increase demands on the environment, but still provide an increased amount of processing capability to customers to satisfy their business needs.
Green Computing protocols focusses on the so-called triple bottom line of economic viability, social responsibility, and environmental impact. This includes disciplined approach to an array of values and criteria for measuring organizational success; economic, environmental and social.
Unlike standard business practices earlier, contemporary Green practices focuses on economic viability as well as green chemistry; reduction of the use of hazardous materials such as lead at the manufacturing stage, maximized energy efficiency during the product’s term of use, and recycling potential or biodegradability of both a defunct product and of any factory waste.
Power consumption
It is not just the fact that computers are used, but it is the way in which computing is implemented. Research [Courtesy: The Global Energy Network Institute (GENI) ] reveals that most personal desktop computers are not being used the majority of the time they are running and many personal computers nationwide are needlessly left on continuously. Every time we leave computers or lights on we waste electricity.
A typical desktop PC system is comprised of the computer itself (the CPU), a monitor, and printer. Your CPU may require approximately 100 watts of electrical power. Add 50-150 watts for a 15-17 inch monitor, proportionately more for larger monitors. The power requirements of conventional laser printers can be as much as 100 watts or more when printing though much less if idling in a “sleep mode.” Ink jet printers use as little as 12 watts while printing and 5 watts while idling.
How a user operates the computer also factors into energy costs. First let’s take the worst case scenario, continuous operation. Assuming you operate a 200 watt PC system day and night everyday, besides the direct annual electrical costs the amount of resources consumed would be phenomenal. In contrast, if you operate your system just during normal business hours, say 40 hours per week, the direct annual energy cost would be significantly reduced – plus, of course, the cost of providing additional cooling. So, if the PC is performing a lengthy operation, at least turn off the monitor.
Greenhouse effect
Considering the tremendous benefits of computer use, neither of the above cost figures may seem like much, but think of what happens when these costs are multiplied by the many thousands of computers in use. Burning fossil fuels generates most of our electricity and it also emits pollutants, sulphur, and carbon dioxide into the air. These emissions can cause respiratory disease, smog, acid rain and global climate change.
Computers generate heat and require additional cooling which adds to energy costs. One idea is to reduce the “carbon footprint” of users — the amount of greenhouse gases produced, measured in units of carbon dioxide (CO2). Greenhouse gases naturally blanket the Earth and are responsible for its more or less stable temperature. An increase in the concentration of the main greenhouse gases — carbon dioxide, methane, nitrous oxide, and fluorocarbons — is believed to be responsible for Earth’s increasing temperature, which could lead to severe floods and droughts, rising sea levels, and other environmental effects, affecting both life and the world’s economy.
Government initiatives
There are national and international initiatives in place to encourage manufacturers to reduce the standby consumption of appliances to as little as 0.5W, and pressure is also being applied for devices to be fitted with proper power switches so they can be switched off without hassles and provide no excuse for letting it remain on.
In a move that aims at saving power, the Bureau of Energy Efficiency (BEE), recently started its ‘Standards and Labelling’ (S&L) programme for electronic appliances. These include refrigerators, air conditioners, water heaters, agricultural pumpsets and tubelights.
All this is part of the Energy Conservation Act, 2001, of the Centre to save a whopping 20,000 mega watt power in the country. Once it comes into effect, the Act will have to be implemented by all the states and union territories. The Non-conventional Energy Development Corporation of AP (Nedcap) was nominated by the state government, through a government order, as the regulatory and enforcement agency.
But is it being implemented? It’s a lesson to Indian Standard formulation bodies who are urged for speedier implementation of EE&L Standards on availability of Energy labelling on Energy Efficient products on potential savings.
At present, it is upto the manufacturers to display energy efficiency labels on their products. But in a year’s time, it will be made mandatory and products that do not conform to norms will not be sold in the market, as it says on the paper.
Energy efficiency labels, the government feels, will provide energy use and cost details to the consumer. By making minor changes in the design of the switching mode power supply, makers of electronic home appliances can reduce consumption by a few watts. One can save three units every month by just switching off the television.
As of now, nearly 20 million cell phones in the country use 40 million watts electricity everyday. However, energy consumption can be brought down to 5 million watts if manufacturers of mobile phone chargers install a transformer costing just Rs 5. All electronic appliances can save at least three to five per cent of total power consumption in the standby mode by making minor changes with minimal investment, according to Nedcap officials.
An average middle class household consumes 150 to 200 units every month out of which 60 units are consumed by the refrigerator alone. The consumption can be brought down to 45 units. Over 35 countries, including the US, have implemented the S&L programme.
Individual initiatives
So the question that pops out is, What can I do?, What can we do? The answer is You can and We can. Simple disciplines and responsible computing may help reduce your computer energy consumption by 80 percent or more while still retaining most or all productivity.
Turn off your computer and/or peripherals when they are not in use. Screen savers save no energy. If screen saver images appear on your monitor for more than 5 minutes, you are wasting energy! A screen saver that displays moving images causes your monitor to consume as much as electricity as it does when in active use. These screen saver programs also involve system interaction with your CPU that results in additional energy consumption. A blank screen saver is slightly better but even that only reduces monitor energy consumption by a few percent. It is best to turn you monitor off.
Standby also provides a good option. But then, standby power is also used to keep internal clocks ticking and to store user options and presets. It consume a reduced amount of power, but are ready to respond to commands from a remote control unit. The amount of power consumed ‘extra’ is stand by mode as against turning off the system would be very small, but again it has a cumulative effect when we consider the millions of machines working globally. While standby mode is preferable to leaving a device fully powered, research conducted around the world has revealed that vast amounts of power are wasted by devices left in standby mode.
If the computer is going to be inactive for more than 20 minutes, consider turning it off. After this time, the energy needed to run the computer outweighs the start-up energy. Turning on and off will not harm the equipment. Look for ways to reduce the amount of time your computer is on without adversely affecting your productivity.
Environment Protection Agency (EPA), benchmarked Energy Star monitors, that stands by its claim of energy efficiency. These “Energy Star” computers and monitors can be programmed to automatically “power-down” to a low power state when they are not being used. These efficiency gains can be achieved without any sacrifice in computing performance. The EPA has estimated that providing computers with “sleep mode” reduces their energy use by 60 to 70 percent. The recommended settings are 20 minutes for monitor sleep and 30 minutes for system sleep.
Thus, you must turn off your computer and peripherals including monitor and printer, when not needed. The inconvenience of waiting a minute or two for a computer to reboot or peripheral to come on line may be trivial compared to the energy savings achieved by keeping computer equipment off when not in use.
The same applies to all other devices and accessories besides computer and peripherals. It is also beyond doubt that there is a great saving of energy (50-80 W) on use of CFLs (15 & 20 W) against incandescent lamps (for use against 75-100 W lamps).
You can take a giant step toward environmentally responsible or “green” computing by conserving energy with your computer. But green computing involves other important steps as well. These pertain to paper use, toner cartridges, disposal of old computer equipment and purchasing decisions when considering new computer equipment.
Paper conservation
Paper conservation is another important aspect of Green Computing. Rather than creating a paperless office, computer use has vastly increased paper consumption and paper waste. Science News writes that computers are responsible for 115 billion sheets of paper being printed annually.
We can take simple precautions to minimize paper waste. Don’t print unless needed, information can always be stored on the disks and backed up. Also to avoid re-printing, reduce errors by reviewing and modifying documents on the screen and use print preview. Also, buy and use recycled paper in your printers and copiers. From an environmental point of view, the best recycled paper is 100 percent post consumer recycled content.
Use “paperless” methods of communication such as electronic mail (e-mail) and fax modems. Also, do not print out copies of e-mail messages unless necessary. Store information on diskettes rather than in “hard copy” format. A single high-density 3.5 inch floppy disk can hold the equivalent of 750 sheets of paper, about one and a half reams. Use a printer that can print double-sided documents. When making copies, use double-sided copying.
Environmentally responsible computer use implies not buying new equipment unless there is a demonstrated need. Determine whether you can upgrade your existing equipment rather than purchasing new equipment.
10 Tips towards greener computing
- Buy only “Energy Star” computers, monitors and printers. Flat panel monitors use about half of the electricity of a cathode-ray tube (CRT) display.
- Buy a monitor only as large as you really need. A 17-inch CRT monitor uses 30 percent more energy than a 15-inch one when each is in an active mode.
- Buy ink jet printers, not laser printers. These use 80 to 90 percent less energy than laser printers and print quality can be excellent.
- Printer toner cartridges can be refilled, rebuilt and reused. Many manufacturers will take a spent cartridge, refurbish it, refill it, and return it for about half the price of buying a new one.
- Network and share printers.
- Do not turn on the printer until ready to print, even an idle printer consumes energy.
- Try to schedule computer-related activities to do them all at once, keeping the computer off at other times.
- Once they are available, consider buying “Green Computers.” Several computer equipment manufacturers are currently developing PCs which are not only highly energy efficient but are also manufactured in a resource efficient and less polluting manner and are designed and built for eventual recycling.
- Consider leasing equipment as an alternative to purchasing. Leased equipment is typically refurbished or recycled, and packaging is reduced.
- Donate an old computer to a school or charity; if it is permanently out of order, give it to a computer recycling facility instead of discarding in a landfill.
With cognizance about environmental ethics dispersing among the masses globally, the term ‘Green Computing’ is not an oxymoron anymore.
In the end, computers and the internet and technology as an entity, are not eco-neutral. Some of their impacts are negative, with energy consumptions and piling e-wastes. But much of their impact is positive with fostering economies and enhanced productivity. What is more important is being cognizant of the need to leverage the two parameters for benefit, a global benefit. The impact of the devices on ecology needs to be lightened, but the impact of the tools on the world is already enormously positive, and will only get better. Start it from an individual basis.
Going green with Dell
- Dell was awarded the National Recycling Coalition’s ninth annual Recycling Works Award in the year 2007. Across the range of Dell products, energy savings are built-in.
- Dell’s versatile OptiPlex line of performance desktops is built with energy efficiency in mind. Innovations designed into the OptiPlex series, when configured with Intel Core 2 Duo processors and flat panel displays, allow the OptiPlex 745 to use up to 70% less power than previous generations of OptiPlex desktops, dramatically cutting consumption down.
- Current Dell Latitude notebooks consume up to 70% less energy on average than the previous generation OptiPlex GX620. The energy saved results in a reduction of pollution to the environment. In addition, every 1000 units of Latitude notebooks installed instead of the Opti GX620 helps reduce CO2 emissions by approximately 1 million lbs.
- Targeting server power efficiency is one of Dell’s primary design objectives. The latest Dell PowerEdge servers consume up to 25% less energy than previous generations. When combined with impressive performance gains, this results in up to three times the performance per watt over previous generations.
- The new Dell PowerEdge servers powered by Intel Xeon 5100 series processors can deliver up to a 152 percent performance increase over the previous generation 2U Dell PowerEdge server.
- The new server portfolio can also lower power consumption by up to 25 percent, providing an increase in performance per watt of electricity of up to 169 percent and addressing customer requirements to reduce the cost and environmental impact of data center power demands
- Dell makes it easy for you to calculate energy use and your costs with Energy Calculators for some of our desktops, notebooks, servers and monitors.
CES is going green too
The Consumer Electronics Association (CEA) today announced that the 2008 International CES is taking unprecedented steps to ‘go green’ by becoming carbon neutral and incorporating the use of sustainable and energy efficient practices.
- The International CES has committed to reducing its impact on the environment wherever we can and offsetting what we cannot avoid. Any damage caused to the environment by the show’s carbon output will be compensated through CES’ donations to renewable energy, energy efficiency and reforestation projects.
- In addition to offsetting the carbon emissions of all CES venues, freight, shuttle buses and hotel rooms, CES provided attendees the opportunity to offset their airline travel via Carbonfund.org.
- CES also debuted a TechZone dedicated to environmentally and economically sustainable technologies which contribute to the social and cultural growth of the developing world.
- CEA took additional steps to make the 2008 International CES more sustainable including working with its Las Vegas-based vendors to use ‘green’ solutions at the event itself.
Lenovo’s efforts
- Electronic Product Environmental Assessment Tool (EPEAT) Gives High Marks to 42 Lenovo PCs and Monitors. ThinkCentre A61e is adorned with EPEAT Gold status, which is the highest designation offered by the operating Green Electronics Council and it is Lenovo’s signature product.
- With its 85% efficient power supply and optional solar panel, this green machine uses only as much power as three light bulbs. Not only that, but it’s made of over 90% reusable or recycled materials.
- The ThinkPad notebooks and ThinkCentre desktops received an overall “EPEAT Silver” rating, indicating that Lenovo PCs met all criteria for healthy environmental performance, plus implemented optional activities beyond the minimum requirements.
- Lenovo PCs are also energy efficient, which reduces emissions of climate changing greenhouse gases. Lenovo also offers safe recycling options for the products.
- Lenovo’s goals in 2007 covered recycling, energy consumption, and paper usage for manufacturing sites. For products, Lenovo’s goals focus on energy efficiency, design for recycling and reuse, use of recycled materials and environmentally preferable finishes, among others.
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