
D.G.
Nov 17, 2003, 12:54 PM
Post #10 of 11
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Since the topic has turned to light bulbs, let me add some "light" on the subject. All light output is measured as "lumens" ,while power consumption is measured in "watts". Energy efficient lighting for residences is typically using a self-ballasted fluorescent. The lumens that these sources give are quite a bit more for every watt consumed versus a conventional incandescent bulb--or in other words, they are more efficient giving more light, at a lower cost per lumen. Also figuring into this discussion is the matter of how long the light source lasts. If you look at the expected life of an incandescent you will often find them hovering around a thousand hours or less. Those fluorescents generally last about 10 times as long. Thus, you will buy 10 incandescents just to equal the purchase of one fluorescent, plus you will have higher operating costs over the useful life of the bulb. And you will also have to keep up with constantly renewing the lamps, so the required maintenance is higher with the incandescents. Using finite natural resources to generate electricity is also a cost that many don't think about. With a standard bulb, one is consuming natural resources at a faster rate. That's one of the reasons that electric companies have had incentive programs to induce people to switch. It may not seem like much, but if lots of people switched to the energy efficient lighting, you would not need to increase the number of power plants to accommodate higher wattage lighting, plus you would decrease air borne pollution levels, and extend the natural resource base further into the future. The other costs such as the manufacturing costs for producing 10 of something versus one; shipping ten versus one; storing ten versus one, and disposal ramifications of ten versus one all suggest there are additional "costs" implied in the decision making process. I see the matter as one of both economy as well as a concern for the use of natural resources. If one really cared, it would be very hard to recommend buying standard light bulbs.
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