How to choose the new bulbs
Most of the bulbs that we have at home is incandescent, or has an inner filament that, current flowing, it heats up (Joule effect) becomes incandescent and illuminating the surrounding area.
This type of light bulbs are now an old design, they consume a lot of power, must be replaced frequently (medium lifetime: 1000 hours of operation) but have the advantage of costing little (usually less than 1 euro).
A few years ago are easy to find on the market other types of bulbs called low-energy or Compact Fluorescent: they are generally more expensive (can reach 20 euro) but have the advantage of lasting much longer (about 10-12 times a bulbs) and consume much less electricity (up to 75% less).
Only the duration would be sufficient to justify the preference, then if we add also the lowest power consumption here is to make a deal that makes two of us: us and the environment! Characteristic of this type of light bulbs is a delayed start: take a few minutes for it to "warm up" and properly illuminate the surrounding environment.
The time needed to reach the maximum intensity of illumination and size are, generally, the distinction between those that cost the most and those that cost less. Just this "warm-up" means that you should not put these bulbs in rooms of passage, but where the light is on for a long time continuously: kitchen, dining room and living room are good examples at home.
As for the condo we advise you to use them in places where the light is lit all night inside the building (see the light of the main gate and bells). For the outside (see lighting of gardens, streets, parking lots), we recommend sodium lamps (which can save you up to 90% of electricity than traditional). Do you think that an average compact fluorescent bulb prevents the emission of 80-90 kg of CO2 per year.
Bring light bulbs with low energy consumption is important, but even more so turn them off when natural light is sufficient!
14/07/2010
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Translated via software
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Source:
Italian version of ReteIngegneri.it