Archive for May 30th, 2009
Saving Energy with Your PC
Posted by Solar Panel Energy in Panel Energy on May 30th, 2009
Saving Energy with Your PC
Green and Clean Computing
Little thought may be given to the energy consumption of computers, but as more and more computers are purchased each year, it is not just the number of computers that forces increased energy consumption but the way in which computers are being used that adds to the building energy burden. Research has shown that most computer desktops are not being used a great deal of the time they are running and are left on for long periods of time. As with other forms of energy consumption, electricity is wasted when it is not being used and this burns fossil fuels that emit carbon dioxide into the air and cause smog, acid rain and other detrimental environmental side effects.
The typical desktop computer consists of a system unit which houses the central processing unit (CPU), a monitor and a printer. The CPU may require 100 watts of electrical power; the monitor, which may be 15 to 17 inches, may require another 50-100 watts; a laser printer can use as much as 100 watts or more while ink printers use as little as 12 watts while printing. The cost for operating a 200 watt system all day and night, everyday, would be $125 annually, while the cost of operation for normal business hours of 40 hours per week would range around $30 annually. Considering the tremendous benefits derived from using computers, this figure may not appear extensive, but when multiplied by the many computers used on a daily basis in this country, the total grows phenomenally.
There are many ways to reduce personal computer energy consumption. Computers, printers and monitors can be turned off when not in use. Many years ago, it was considered harmful to the computer if it were turned on and off periodically during the course of a day. However, the internal circuitry of personal computers is designed to be protected from power damages that might result from on and off switching. Doing so will not substantially affect the computer’s useful life.
The use of screen savers wastes energy and should not be used. They go back to the days when, if not used, images would be ingrained on screens if they remained on too long, but updates in technology have long made the use of screen savers unnecessary.
The United States Environmental Protection Agency has also developed technology for computers and monitors that can be programmed to automatically power down to a lower power state when not in use. This “sleep mode” can reduce energy consumption by 60% to 70% and these “Energy Star” computers serve to gain efficiency without any loss in computing performance.
Green computing extends beyond the personal computer to the use of related devices and materials. For example, paper waste can be reduced by printing as little as possible and only when necessary, recycling waster paper, using electronic mail instead of faxing to eliminate the need to produce a hard copy, and trying to print on both sides of the page when possible. In addition, printer and toner cartridges can be recycled. Although this is a practice that has been discouraged in the past by printer and toner cartridge manufacturers, such recycled cartridges save resources and reduce pollution and solid waste. Disposing of electronics as well can be done through recycling agencies to reduce waste and provide for recycling of functional equipment.
Finally, green computing also means not buying new equipment unless there is a real need for it. Close investigations can be made regarding upgrading hardware or software before purchasing a new computer. However, if the determination is made that a new computer system should be purchased, there are “Energy Star” computers, monitors and printers on the market. In addition, ink jet printers use 80% to 90% less energy than laser printers and soon, even “Green Computers” will reach the marketplace for sale.
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Start Recycling Today
Posted by Solar Panel Energy in Panel Energy on May 30th, 2009
Start Recycling Today
Recycling is like exercising - everyone knows we should do it, but not all of us do it as frequently as we should and many of us don’t do it at all. However, there are tons of reasons why you must make an effort to recycle as much as feasible. If you have not been diligent about recycling, this article provides some great reasons why you should start.
1. Recycling cuts back on global warming.
2. Production of certain materials from the start can release serious amounts of CO2 into the atmosphere.
3. Recycling paper saves trees - for each ton of paper recycled, 17 trees are saved. Each of these trees can extract around 250 pounds of carbon-dioxide from the air in a year.
4. Recycling makes us more energy-efficient. It frequently takes a great amount more energy to form something from nothing than to reuse it.
5. It keeps our landfills from overflowing. We are fast running out of space for landfills especially near towns.
Beach towns have been dumping trash into their seas for years to by-pass the difficulty, but with widespread sea ecological collapse, this isn’t longer a practicable option. Worse yet, it’s hard to find land in suburban and agricultural areas whose residents will permit landfills to come into their areas without a fight. The squeeze for rubbish heap land is only going to become worse in the future.
Recycling gives us some hope. Studies show that 60% to 75% of rubbish in landfills can be recycled. That suggests that if everyone recycled, we would have 60% to 75% less rubbish in our landfills, and we’d need at least that far less land for rubbish disposal. The rubbish in landfills is mostly not treated in any way it’s simply thrown in a huge hole and buried over. A lot of this rubbish isn’t environmentally friendly or readily biodegradable and it is unsurprising that contaminants can get into our water. It is also a major reason why it isn’t safe to drink from streams and brooks when you are hiking and camping even when it’s like you are in a spotless environment. It reduces air pollution. A lot of factories that produce plastics, metals, and paper products release poisons into the air.
For instance, plastics are usually burned in incinerators. Plastics are made with oil, and that oil is released into the atmosphere when the plastic burns, creating significant greenhouse-gas emissions. From manufacturing to processing, from collection to invention it’s common knowledge that recycling is an expansion industry, earning billions of bucks yearly. Our desire to recycle is only going to grow more insistent as populations grow and as technology changes. It adds to property worth. It is obvious a rubbish heap near your house can decrease your property values significantly. Recycling decreases the quantity of land required for landfills. This decreases the quantity of homes near landfills, keeping property values up and house owners cheerful. The more folks recycle, the less landfills we need and if enough folks pitch in, recycling should pay off for everyone. It is good business. Pitting business against the environment is a lose-lose situation - everyone suffers.
Commercial factories and processing plants save masses of cash on energy and extraction systems when they use recycled materials rather than virgin resources. They also make sure that basic resources don’t become a scanty commodity, keeping demand and costs down and making sure that their business can continue for years to come. One person can contribute. Many of us think this is true with recycling, too but the reality is that small acts of recycling make a giant difference.
David Sein is a freelance journalist reporting on socially conscious issues.
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